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Mardiana Mardiana, Novriza Sativa, Hari Hariadi, Nanda Triandita, Nela Eska Putri
Journal of Applied Agricultural Science and Technology, Volume 4, pp 189-195; doi:10.32530/jaast.v4i2.138

Abstract:
Functional drinks can be made from local herbal ingredients that are often used for spices such as cinnamon (Cinnamomum burmanni) and cardamom (Amomum compactum). The purpose of this study is to determine the best formulation of cinnamon and cardamon as a herbal drink based on moisture content, ash content , and sensory evaluation. Raw materials were dried at 50 °C until reached a maximum moisture content 10% and were reduced in size. The formulations were made of comparison between cinnamon and cardamom which were A (100: 0)%; B (80:20)%; C (60:40)%; D (50:50)%; E (40:60)%; F (20:80)%; and G (0: 100)%. The moisture content of all formulas is between 7.12-7.33% (
, Fajar Restuhadi, , Fajar Yuliandri
Journal of Applied Agricultural Science and Technology, Volume 4, pp 170-180; doi:10.32530/jaast.v4i2.155

Abstract:
Biological processing liquid sago waste is carried out by utilizing microlagae which are symbiotic with decomposer bacteria. The aim of this research was to get chosen treatment of microalgae Chlorella sp. as a reducing BOD, COD and Oil content in Palm Oil Mill Effluent with symbiotic mutualism between microalgae Chorella sp and Agrobost. This research used a Complete Randomized Design (CRD) with treatment 5 times and replication 3 times. This research was microalgae 800 ml/L (with abundance 6.883.000 cell/ml) in 6000 ml of total treatment solution with 5 treatments of Agrobost (0% v/v, 4% v/v, 8% v/v, 12% v/v, and 16% v/v). Data processing using ANOVA and DNRT 5%, the results showed that the concentration of Agrobost had significant affects for BOD, COD, oil and pH. The chosen treatment from the result of this research was 16% v/v which had the value BOD 89.10 mg/L, COD 297.67 mg/L, oil 2.85 mg/L, and pH 9.05.
, Yenny Liswarni, Martinius Martinius
Journal of Applied Agricultural Science and Technology, Volume 4, pp 134-145; doi:10.32530/jaast.v4i2.146

Abstract:
The consortia of endophytic bacteria with various mechanisms (competition, antibiotics, induction of resistance, and others), simultaneously, are more effective in controlling pathogens and increasing plant growth. The purpose of this study was to obtain endophytic bacterial consortia capable of suppressing of bacterial leaf blight and promoting the growth of rice plants. The study consisted of three experimental stages. The first stage was the test on the antibiosis ability of the endophytic bacterial consortia to suppress of pathogenic bacteria Xanthomonas oryzae pv. oryzae (Xoo) using the Kirby Bauer method. The second stage was the test on the ability of endophytic bacterial consortia to promote the growth of rice seedlings. The experiment was arranged in a Completely Randomized Design (CRD) which consisted of six combinations of endophytic bacterial consortia and 15 replications within each combination. The endophytic bacterial consortia were introduced by soaking the seeds, and the observations were made on the plant height, number of leaves, root length, fresh weight, and dry weight of rice seedlings. Meanwhile, the third stage was the test on the ability of endophytic bacterial consortia to suppress of bacterial leaf blight (BLB) diseases and to promote the rice plant growth. The experiment was arranged in a Completely Randomized Design (CRD) with six combinations of endophytic bacterial consortia and five replications within each combination. The endophytic bacterial consortia were introduced by soaking the roots of the seedlings. The observations were made on the incidence of disease, disease severity, number of leaves, plant height, and number of tillers. The results showed that all endophytic bacterial consortia had antibiosis abilities. The best endophytic bacterial consortia for controlling bacterial leaf blight and promoting the growth of rice seedlings and plants were the C (Bacillus sp SJI; Bacillus sp HI) and D (Bacillus sp SJI; S.marcescens isolate JB1E3) consortia.
, James Koske, Monicah Mucheru Muna, Jonathan Muriuki, Innocent Osoro Ngare
Journal of Applied Agricultural Science and Technology, Volume 4, pp 118-133; doi:10.32530/jaast.v4i2.170

Abstract:
Dryland ecosystems have always been prone to relatively high vegetation and general environmental degradation; translating to changes in soil physical and chemical properties and massive carbon losses. Despite their vast surface area, Carbon sequestration therein still remains low. However, this low carbon means they are less saturated and therefore a tremendous potential therein to sequester more Carbon. Conservation agriculture with trees (CAWT) presents an opportunity to reduce the degradation and enhance the carbon stocks. This study was set to compare the biomass productivity and carbon sequestration potential of agroforestry between conventional and conservation agriculture practice. The study was carried out as part of ongoing experimentation established in short rain (SR) season of 2012 by the World Agroforestry Centre in a trial site at the Agricultural Training Centre (ATC) in Machakos county, Kenya. The trials adopted a split plot arranged in a randomized complete block design with two farming systems (conventional and conservation agriculture) as the main blocks, 7 treatments and three replicates, summing to a total of 42 plots. In the fields, two shrub species (Calliandra calothyrsus Meissn. and Gliricidia sepium Jacq.) were planted in three different spacing (1.5x1 m, 3x1 m, 4.5x1 m) for maize-legume intercrops. Trees were harvested by coppicing, weighed and leaf/twig samples taken for determination of biomass, which was then converted to Carbon using a conversion factor 0.5. The data was statistically analyzed using ANOVA and means separated using LSD at p
, Rahzarni Rahzarni, Syuryani Syahrul, Yenni Muchrida, Irwan Roza
Journal of Applied Agricultural Science and Technology, Volume 4, pp 181-188; doi:10.32530/jaast.v4i2.179

Abstract:
The peel of red dragon fruit usually discarded. It is rich in polyphenol compounds that have antioxidant activity and health benefits. This research aimed to determine the antioxidant properties of herbal tea such as phenolic content, betacyanin content, and antioxidant activity. The herbal tea prepared with hot oven drying methods, where’s the fresh peel of red dragon fruit and ginger were cut to be small pieces and dried at 60oC, and ground into tea powder then mixed as treatments. Results showed that the addition of ginger has no significant effect on phenolic content, and betacyanin content decreased by the addition of ginger. The phenolic content of herbal tea (0% ginger) and the highest addition of ginger (12%) were 3.39±1.19 mg GAE/g and 3.59±1.43 mg GAE/g respectively. The betacyanin content were 124.63±1.61 mg/100 g (0% ginger) and 104.01±2.99 mg/100g (12% ginger). As the amount of ginger added increased, the percentage of inhibition of herbal tea decreased from 66.23%±2.67 to 61.19%±2.45%.
, Roy Pardingotan, Siti Herlinda, Chandra Irsan, Muhammad Umar Harun
Journal of Applied Agricultural Science and Technology, Volume 4, pp 101-117; doi:10.32530/jaast.v4i2.165

Abstract:
Many problems arise in the cultivation of crops; one of these problems is insect pests that can threaten crop production. Integrated pest management is an alternative technique for managing the balance of the agricultural environment. Habitat manipulation by increasing plant diversity with refugia is considered an alternative way to maintain natural enemy in an agro ecosystem. The use of soybean as a refugium in a crop field is still limited. Research was conducted to investigate the diversity of predatory arthropods in soybean as a refugium in a chilli pepper crop field at the Agro-technology Training Centre (ATC) at the University of Sriwijaya. In this study, four varieties of soybean (Dena 1, Detam 3 PRIDA, Deja 1, and Devon 1) were used as refugia. Three observation methods were carried out using nets, pitfall traps and visual observation for 7 weeks. The results show that arthropod diversity in soybean plants comprised 6 orders with 10 families and 19 species. Odontoponera denticulata (Hymenoptera) was the most predominant arthropod predator, observed in 73% of all soybean varieties. The number of canopy-dwelling arthropod predators was similar in the four soybean varieties.
, Riyad Ul-Hasan Karim, Harmailis Chaniago, Sohrab Hossain
Journal of Applied Agricultural Science and Technology, Volume 4, pp 88-100; doi:10.32530/jaast.v4i2.178

Abstract:
This research was conducted to investigate the effect of different herbicides with weed management practices on growth and yield performance of mungbean genotypes. The experiment consisted of two factors were mungbean genotypes and weed management. There were two genotypes namely BARI Mung 6 and BARI Mung 8. While there were five weed management practices namely control/no weeding and without herbicide application (T1), hand weeding at 20 and 40 DAS (T2), pre emergence herbicide (Panida) at 1-2 DAS (T3), pre emergence herbicide (Neon) at 2-3 DAS (T4), and post emergence herbicide (Neon) at 10-15 DAS+hand weeding (T5). The results revealed that BARI Mung 6 stand superior to BARI Mung 8 in respect of dry matter content/plant, pods/plant, seeds/plant, seed yield, and 1000 seed weight. Among weed management practices, maximum plant height (53.70 cm), dry matter weight/plant (17.96 g), pods/plant (18.31), seeds/plant (171.47), maximum weed control efficiency (33.78 %) obtained from T3 treatment. Based on the interaction effect showed that BARI Mung 6 weeded with pre emergence herbicide (Panida) at 1-2 DAS produced maximum seed yield (1.79 t/ha) as well as yield attributes showed 2.29 % higher seed yield.
, Rita Erlinda, Agustamar Agustamar
Journal of Applied Agricultural Science and Technology, Volume 4, pp 155-169; doi:10.32530/jaast.v4i2.162

Abstract:
The System of Rice Intensification (SRI) operates under aerobic conditions so that helpful microbes are active and abundant. Effective N-fixing rhizobacteria and indigenous phosphate solubilizers Azotobacter and Pseudomonas grow well in the organic compost Bioorganic because it resembles their natural habitat. The purpose of this research is to find out the right dose of Bioorganic fertilizer and the most N and P doses needed to optimize the SRI method of rice crop production. This research uses a factorial randomized block design. The first factor is Bioorganic fertilizer dosage (1, 3, and 6) t ha-1. The second factor is the dose of N and P fertilizers to use (0, 25, 50, and 75)% of the recommended dosage. The results of this study inform you about Bioorganic fertilizers containing Azotobacter and Pseudomonas fluorescens indigenous. Azotobacter bacteria produce the availability of nutrients N, which functions as Plant Growth Promoting Rhizobacteria (PGPR), these bacteria quickly colonize the root system, regulate hormonal balance, nutrition, and encourage resistance to pathogens. Pseudomonas fluorescens bacteria acts as a provider of phosphorus and nutrients in the generative phase. Both of these microbes have a role in SRI method of rice plant metabolism to increase vegetative and generative growth of rice plants with SRI method with production reaching production of 8.80 t ha-1 in B2 (3 t ha-1) and N2P2 (50%) with the production of 9.21 t ha-1, so the use of inorganic fertilizers is more efficient. Rice soil nutrient status increased pH from slightly acidic to neutral, C-organic increased from 1.27% (low) to 9.30-10.68% (high), N total from 0.13% (low) to 0.45-0.58% (high), P- available from 13.0 ppm reaching 18.0-20.0 ppm (moderate), the Bioorganic application has not been able to increase the C: N, CEC value and base saturation. Nutrient uptake of N and P on the leaves of rice plants is better at dose B2. Bioorganic applications increase the nutrient content of paddy soils planted with the SRI method compared to initial soil nutrient analysis.
Endar Hidayat, Asmak Afriliana, Gusmini Gusmini,
Journal of Applied Agricultural Science and Technology, Volume 4, pp 146-154; doi:10.32530/jaast.v4i2.169

Abstract:
Japan is the 3rd largest importer and consumer of coffee in the world. Considering have many demands of coffee, Japan is looking alternatives for improving to growing and the productivity of coffee. The research was aimed to assessment land suitability class for (arabica and robusta) coffee and land suitability evaluation of coffee. 3 soil samplings were collected from the study area. Matching method is used to evaluate the land suitability with parameter: temperature, elevation, rainfall, slope, pH, and nitrogen. The results showed that climate and physical condition of land area very suitable to grow robusta crops, and its level appropriateness is S1 (highly suitable). However, typhoon is problem in every year for growing coffee crops, but it can be handling by planting protecting crops.
, Nenny Wahyuni, Nila Suryati, Noviyanto Noviyanto, Heriyanto Heriyanto
Journal of Applied Agricultural Science and Technology, Volume 4, pp 26-35; doi:10.32530/jaast.v4i1.147

Abstract:
Palm oil is an edible vegetable oil derived from the mesocarp (reddish pulp) of the fruit of the oil palm, primarily the African oil palm Elaeis guineensis. Oil palm is one of agriculture comodity that can increase farmers income, provide raw material on manufacture industry which can create added value. The expansion of oil palm farming in Indonesia has shifted the use of mineral land to suboptimal land which is currently available in many place in Indonesia. Generally the aim of this research is to anylize the competitiveness sensitivity of oil palm farming. Specifically this research wants to anylize the sensitivity on input-output changing, and to anylize the impact of government policy on input-output when facing fluctuation price. In order to reach the goal of this research we used Policy Anlayisis Matrix (PAM). The result of this research shows that partially the declining of price, declining of output volume and increasing input price PCR value and DRCR < 1, which means that the oil palm farming on suboptimal land has competitivenes, and the absence of government policy on determaining input price nor output price on oil palm farming in at suboptimal land. While simultanously shows that the fluctuation of input and output price causes value of PCR dan DRCR > 1 with PCR value 1,12 and DRCR value 1,04, means that oil palm farming on suboptimal land at Musi Rawas Regency not feasible and has no competitiveness. It means that government policy needed to protect input price in oil palm farming on suboptimal land. Therefore government support and guidence in oil palm farming technology on suboptimal land also needed to increase the production of oil palm farming on suboptimal land.
, Rizka Fadhilah, Dinah Cherie, Azkiya Wahyu Novianda
Journal of Applied Agricultural Science and Technology, Volume 4, pp 12-25; doi:10.32530/jaast.v4i1.152

Abstract:
Energy Consumption in the agricultural sector consists of diesel, gasoline, and kerosene for fuel of agricultural machinery (rice transplanter, tractor, rice milling unit, motor sprayer, and water pump) in the sector. The objectives of this study are to determine the total energy consumption of rice planting and to analyse the performance of rice transplanter during rice planting in West Sumatra, Indonesia. This research was conducted on farmer's rice fields in west Sumatera Indonesia. The results obtained from the performance of a rice transplanter machine include working speed of 0.633 m/s, a theoretical work capacity of 0.274 ha/hour, effective work capacity of 0.222 ha/hour and work efficiency of 80.967%. The detail of energy consumption using a rice transplanter are human energy (9.225 MJ/ha), seed energy (255.413 MJ/ha), fuel energy (93.463 MJ/ha) and engine energy (0.821 MJ/ha), so that the total energy consumption is 358.952 MJ/ha.
Fri Maulina, Novri Nelly, Hidrayani Hidrayani, Hasmiandy Hamid
Journal of Applied Agricultural Science and Technology, Volume 4, pp 76-85; doi:10.32530/jaast.v4i1.150

Abstract:
The species of egg parasitoid in rice bug is necessary to know to be used as biological agent in the field. The research aimed to determine spesies of parasitoid, diversity index, parasitization level and parasitoid mortality which found in rice bug eggs in rice fields in West Sumatra. Purposive random sampling was used in this research for determining the sampling locations. Collecting eggs sampling was conducted for 1 km along transect line in sampling location. The collected eggs of 12 sampling locations then observed and identified in Laboratory of Insect Bioecology, Faculty of Agriculture, Andalas University. The result showed that the kind of egg parasitoid found in the field were Hadronotus leptocorisae and Ooencyrtus malayensis with each parasitization level were 22.3 ± 11.1 % and 4.2 ± 5.3 %, each the mortality were 57.8 ± 26.4% and 30.6 ± 37%, the diversity of egg parasitoid was low with the index 0.3858 Based on Shannon-Wienner.
, Govardhan Goud
Journal of Applied Agricultural Science and Technology, Volume 4, pp 3-11; doi:10.32530/jaast.v4i1.137

Abstract:
The present work investigates the effect of water absorption on mechanical properties of calotropis procera fiber reinforced epoxy polymer composites. The calotropis procera fiber chemical and mechanical testing was done to evaluate chemical composition and strength of the fiber. The composites are fabricated by reinforcing calotropis procera fiber in epoxy matrix by varying the fiber wt. % by traditional hand layup method. The water absorption of calotropis procera reinforced epoxy polymer composites at room temperature was found to increase with increasing fiber loading. The mechanical testing results of moisture exposed composites indicated decreased strength which may be due to degraded bonding between fiber and matrix.
, Kesuma Sayuti, Novizar Nazir, Irfan Suliansyah
Journal of Applied Agricultural Science and Technology, Volume 4, pp 36-55; doi:10.32530/jaast.v4i1.135

Abstract:
One of the types of coffee cultivated in Solok Regency is Arabica Coffee (Coffea Arabica L). The quality of the coffee produced can be influenced by the proper harvesting and post-harvest process so as to produce ground coffee with good quality. This research is done by the method of observation, descriptive, and hedonic test. Ground coffee produced in Solok Regency has a semi-mechanical harvesting process while the post-harvest process begins with the release of the skin and meat of the fruit, subsequent drying, and release of the skin of horns, sorting and grading, roasted, milling and packaging. This research aims to study the processing and quality of Arabica Ground Coffee in Solok Regency.
, Dian Pramana Putra, Wellyalina Wellyalina
Journal of Applied Agricultural Science and Technology, Volume 4, pp 56-63; doi:10.32530/jaast.v4i1.130

Abstract:
The layer cake is one of the traditional cakes that are very popular with the community. The addition of Moringa leafs is expected to extend the period of storage and the components of the nutrition can be increased. Moringa leaves indicate to contain an antibacterial compound that is the result of secondary metabolites. This compound consists of alkaloids, tannins, flavonoids, terpenoids, saponins, and others. The purpose of this study was to determine the antibacterial properties of Moringa leaves added to layer cake against pathogenic bacteria S. aureus and E. coli. Research has been implemented on April - May 2019. The testing of antibacterial activity by using well method. The results showed that the layer cake with the addition of 4% Moringa leaves indicated the high inhibition zone on the bacteria E. coli by 10.7 mm and S. aureus by 9.7 mm when compared with the addition of 1%, 2%, and 3 % Moringa leaves. The result of bacterial pathogens that were tested in Moringa leaves showed that the bacteria E. Coli had resistance to more robust compared with S. Aureus. This is indicated by the inhibition zone of E. coli that is greater than S. aureus bacteria.
, Hendra Hendra, Sri Aulia Novita, Fithra Herdian, Mohamad Riza Nurtam, Perdana Putera, Rosda Syelly
Journal of Applied Agricultural Science and Technology, Volume 4, pp 64-75; doi:10.32530/jaast.v4i1.156

Abstract:
Difference and variation of leaves shape is usually used as primary identifier of the plant species. But some plants may have a similar leaf shape and thus require another more accurate identifier. This study applied principal component analysis (PCA) methods for identifying tropical plant species from the shape of the leaves. This method simplified the observed variables by reducing the dimensions of the information that is stored as much as 75%, so it did not eliminate important information and can save the data processing time. There were 100 images of leaves taken from several sides of the leaf in JPEG format with which the shape of leaves were look similar, like citrus (Citrus aurantifolia), durian (Durio zibethinus), guava (Psidium guajava), mango (Mangifera indica), jackfruit (Artocarpus heterophyllus), avocado (Persea americana), rambutan (Nephelium lappaceum), sapodilla (Manilkara zapota), red betel (Piper crocatum) and soursop (Annona muricata). Identification of those 10 kind plant leaves produced 97% accuracy rate. Measurement systems were designed using the K-fold Cross Validation with k = 10, the results of experiments shown omission error occurs on the leaves of guava, jackfruit and red betel while twice commission error were found on the leaves sapodilla and once on citrus leaves.
, Sanjay Mavinkere Rangappa, Nasmi Herlina Sari
Journal of Applied Agricultural Science and Technology, Volume 4, pp 1-1; doi:10.32530/jaast.v4i1.159

, Hendra Hendra, Jamaluddin Jamaluddin, Muhammad Makky, Khandra Fahmi
Journal of Applied Agricultural Science and Technology, Volume 3, pp 299-308; doi:10.32530/jaast.v3i2.112

Abstract:
The quality of rubber processed materials, that is produced by the farmer is generally low and can be seen from their colour, pollutants levels, foul odour and the very cheap price. To improve the quality of the rubber should be done both in terms of its treatment and processing equipment. The main objective of this research is to enhance and improve the quality of farmer's rubber processed materials by using natural coagulant which liquid smoke to agglomerate the rubber, and designing of rubber grinding machine. The component of rubber grinding machine including hopper, regulating entry materials, three rollers, pulleys and belt, outlet, gears, engine, regulating the thickness and chassis. In this research, the thickness rubber after grinding is 3-5 mm accordance with Indonesian National Standard rubber. Processed material rubber produced is white and no pollutants. The coagulant used was liquid smoke with a concentration of 10 -20%, where this addition affects the agglomeration speed of rubber and smelled slightly of smoke. The average rate of Feed is 48.58 kg / h, a capacity of the machine is 37.40 kg/hr and cost of operation is Rp. 650 / kg.
, Poppy Diana Sari, Rukmi Sari Hartati, I Nyoman Suprapta Winaya
Journal of Applied Agricultural Science and Technology, Volume 3, pp 289-298; doi:10.32530/jaast.v3i2.109

Abstract:
Diesel oil demand as energy source at industrial, transportation and electric generating sector are increasing and it resulted with the decreasing of fossil energy source backup. Biodiesel as an alternative energy source to substitute diesel oil can be utilized from used fried oil of sardine flour. The purpose of this research was to develop the technology to convert used fried oil of sardine flour to become biodiesel using one step trans-esterification technic as an alternative of renewable energy source and also to utilize waste of used oil. Biodiesel made using one step trans-esterification technic with NaOH catalyst concentration 0.5; 1.0; 1.5; 2.0 (% m/m) from total weight of oil and methanol. Trans-esterification process run for 30, 60 and 90 minutes at 65 temperature. The biodiesel obtained was analyzed using gas chromatography and mass spectrometer (GC-MS). The quality was determined by comparing its physicochemical properties and compared to the SNI standard 04-7182-2015. The result of GC-MS showed 10 peaks corresponding to ten methyl ester (biodiesel): octanoic acid methyl ester; decanoic acid methyl ester; dodecanoic methyl ester; tridecanoic acid, 12-methyl-, methyl ester; pentadecanoic acid methyl ester; hexadecatrienoic acid methyl ester, 9-hexadecenoic acid methyl ester, 9-hexadecenoic acid methyl ester, trans-13-octadecenoic acid methyl ester, hexadecanoic acid methyl ester. The biodiesel obtained has a density of 908 kg/m3, viscosity of 3.13 mm2/s, acid value of 0.29 mg-KOH/g found in treatment 1.5% NaOH and time process of 60 minutes. Viscosity and acid value were in a good agreement with SNI standard 04-7182-2015. The research shows that used fried oil of sardine flour has possibility as biodiesel source. Keywords: Biodiesel; sardine flour used cooking oil; trans-esterification
Rover Rover, Reni Mayerni, Yulmira Yanti, Auzar Syarif
Journal of Applied Agricultural Science and Technology, Volume 3, pp 257-267; doi:10.32530/jaast.v3i2.116

Abstract:
The IAA potentials of endophytic bacteria indigenous isolated from roots palm oil in west Sumatra. Isolate were characterized on the basis of visual observation, gram staining, hypersensitive reaction and IAA producing bacteria. Subsequently, effect on plant growth was tested by nursery palm oil used random design block. Out of 82 isolates, base on gram test 12 isolates were gram negative and 70 isolates grams positive and then results on the reaction hypersensitive test (HR test) there are 8 isolates that positive which means the isolate cannot be applied on the soil and plant. Eighty isolates selected were able to produce IAA that was between ppm 0,30ppm - 3,65ppm. Seven isolates showed clearly the growth promoting plant under field condition. Hence, these isolates are promising plant growth promoting isolates showing multiple attributes that can significantly influence the nursery palm oil. The result of present study, treatment E3.1.2 has higher plant most of the other treatment i.e. 21,93 cm and number of leaves i.e. 4,33 leaves.
Rince Alfia Fadri, , Novizar Nazir, Irfan Suliansyah
Journal of Applied Agricultural Science and Technology, Volume 3, pp 189-201; doi:10.32530/jaast.v3i2.117

Abstract:
The purpose of this study were to determine the effect of temperature and roasting duration on physical characteristics and quality of arabica coffee sensory,: find out the best temperature and roasting duration treatmen to physical characteristics and quality of arabica coffee sensory. This study used a factorial complete randomized design with two factors (200°C, 220°C and 240°C) and duration of roasting (12, 15, and 18 minutes). The variables observed in this study were rendemen (sucrose content of sugar cane crop or sample), water content, color value, acidity and sensory test of arabica coffee. The results showed that temperature and duration of roasting had effect on rendemen, water content, color value, acidity, flavor, taste and color of arabica coffee. The temperature of 220 ° C with 12 minutes of roasting is produceed the best physical characteristics and sensory quality of Singgalang arabica coffee, with 88.1% of rendemen, 1.23% of water content (bb), different color L (Lightness) 6,07, acidity 5.81, scent score 3.5), taste score value of 3.2, color score 3.6.
Ifmalinda Ifmalinda, Imas Siti Setiasih, Mimin Muhaemin, Sarifah Nurjanah
Journal of Applied Agricultural Science and Technology, Volume 3, pp 280-288; doi:10.32530/jaast.v3i2.110

Abstract:
Chemical characteristics of coffee are depended on types of coffee. Different types of coffee have the unique characteristic. Chemical components have significant effects on taste and aroma of brewing. Those characteristics are the result of volatile and nonvolatile components during roasting then affecting taste. Kopi Luwak has distinct chemical and taste from regular coffee. On previous research, Marcone (2004b) and Mahendratta et al. (2011) explained that quality improvement on Kopi Luwak is result of lower protein content and higher fat content compared to regular coffee. Lower protein content reduces bitter taste while higher fat content can increase body or feeling heavy. The aim of this research was to obtain information about chemical compound of Kopi Luwak and regular Arabica coffee. From this study, it can be analyzed that protein content of regular green coffee beans was 9.48%, and regular roasted bean was 11.3% while protein content of Kopi Luwak green bean was 8.8%, and its roasted bean was 10.12%. Further, caffeine content had been analyzed where regular coffee beans contained 0.70% and its roasted bean contained 0.61% while caffeine content of green bean from Kopi Luwak was 0.51%, and its roasted bean was 0.47%. pH valued was also observed where regular green bean was 6.7 and regular roasted bean was 6.9 while green bean of Kopi Luwak was 5.3 and its roasted bean 5.7. Moreover, sugar content of regular coffee beans was 1.9% and its roasted bean was 0.015% while sugar content of Kopi Luwak green bean was 1.6% while its roasted bean was 0.013%. Fat content of regular green coffee beans was 8.5% and its roasted bean was 11.7% while fat content of Kopi Luwak green bean was 9.3% and its roasted bean was 12.2%. Fatty acid content of regular coffee beans consisted of hexadecanoic acid with area 40.3%, Kopi Luwak bean was 44.3%, and octadecenoic content with area 2.46% while Kopi Luwak bean was 7.12%.
, Rohan Patil, Aaquib Ashfaq, Harsha Vardhan, Anil Kumar
Journal of Applied Agricultural Science and Technology, Volume 3, pp 179-188; doi:10.32530/jaast.v3i2.105

Abstract:
Nowadays the position of natural fibers in the world fiber is stable, growing in the area of their application, not only in textiles but also in more eco-friendly composites. This work is focused on study of the effect of SiC as filler material on the banana peduncle/Carbon fibers reinforced hybrid composites. Four different laminates are fabricated by varying the matrix composition (BP, BP+SiC, carbon+BP, Carbon+BP+SiC ). The alkaline treatment with 6% NaoH of the BP fibers improves the specific strength and binding properties. The filler added composites laminates shows higher mechanical properties. From the results, it is seen that mechanical properties like Tensile, Flexural, ILSS, Impact and hardness are improved by 89, 75, 99, 68 and 64% by the addition of the SiC to the banana peduncle/Carbon fiber composite laminate.
, Eva Susanti, Asnurita Asnurita, Elliza Nurdin, Ramaiyulis Ramaiyulis
Journal of Applied Agricultural Science and Technology, Volume 3, pp 226-238; doi:10.32530/jaast.v3i2.106

Abstract:
Agricultural and plantation wastes, especially cocoa plants, have not been widely used, although in some conditions they have potential as animal feed ingredients and raw materials for composting. So needs a program potential utilization of waste produced by the plant cocoa is cocoa shell waste such as being liquid smoke. Liquid smoke is a natural food preservative. One of the advantages of liquid smoke is antioxidant compounds. This study aims to know the antioxidant activity of cocoa shell liquid smoke on a variety of different water content. This research is an experimental quantitative descriptive method so that an analysis of the antioxidant activity of liquid smoke from cocoa peel is obtained. The results showed that the liquid smoke of cocoa peels at a moisture content of 25%, 20%, 15%, and 10% had strong antioxidant activity because the IC 50 values obtained were below 50 ppm.
, Tjut Chamzhurni, Alfizar Alfizar, Bonny Pw Soekarno, Vina Maulidia, Irza Sahputra
Journal of Applied Agricultural Science and Technology, Volume 3, pp 202-212; doi:10.32530/jaast.v3i2.120

Abstract:
Molleculler study was conducted to identify several species of Trichoderma isolate from several plant (Pine, Cacao, Gliceria, Nutmeg, Bamboo, Coffee, Potato). The growth of eight species Trichodermaafter pelleting formulation has been observed. Pellet Trichoderma harzianum have good ability to growth on PDA medium after 4 weeks storage. Base on their mycelium diameter growth on PDA, T. harzianum have selected as potential species on pellet formulation growth. Several dose of pellet formulation have been applied for controlling Phythopthora disease. The application of T. harzianum pellets in the form of a 2 g / 100 ml (S1) suspension effective in inhibiting the development of Phytophthora sp in cacao seedlings, when the higher concentrations of T. harzianum pellets applied to cacao seeds,the disease severity increase. Pellet Trichoderma could be use as biological control agent of cacao seedling in certain dosage.
Yun Sondang, Khazy Anty, Ramond Siregar
Journal of Applied Agricultural Science and Technology, Volume 3, pp 213-225; doi:10.32530/jaast.v3i2.121

Abstract:
The productivity of land and plants have decreased slowly, due to the use of inorganic fertilizers continuously. Efforts to improve productivity are reducing inorganic fertilizers and returning organic matter to the soil. The aim of this research are (1) to identify the chemical characteristics of biofertilizer with an indigenous microorganism as bioactivators and (2) to study the effect of biofertilizer on nutrient uptake of maize plant. The research was conducted at Laboratory, Greenhouse, and Experimental Field of Politeknik Pertanian Negeri Payakumbuh, West Sumatra Indonesia. The first step experiment in the Laboratory was produced indigenous microorganism from banana humps. The second step of making bio-fertilizers in Greenhouse used a Completely Randomized Design with four treatments of indigenous microorganism (IMO) level 0%, 10%, 20%, 30% in biofertilizer with five replications. The third step of biofertilizer application on the Experimental Field used Randomized Block Design Factorial arranged with two factors and three replications, the first factor IMO level in biofertilizer (M) 0%, 10%, 20%, 30% and the second factor was the dosage of inorganic fertilizer (P) 0%, 50%, 100% of the recommended dosage, 12 combinations of treatments were obtained. Results showed that microbe consortium (Enterobacter cloacae, Bacillus subtilis, Pseudomonas fluorescens, Aspergillus niger, and Trichoderma asperellum) in biofertilizers with different levels would affect the chemical characteristics of biofertilizer. Biofertilizers influences nutrient uptake of P and K maize plant, while inorganic fertilizer influences nutrient uptake of N and P maize plant.
Fithra Herdian, , Indra Laksmana, Mohammad Riza Nurtam, Rildiwan Rildiwan, Zulnadi Zulnadi
Journal of Applied Agricultural Science and Technology, Volume 3, pp 309-319; doi:10.32530/jaast.v3i2.125

Abstract:
West Sumatra-Indonesia has potential to plant coconut due to the coastal location, sunshine level with average temperature 27oC. Coconut is a very productive plant. Coconut dehusking is one of the process that takes a lot of time and energy. Most of the farmer still using human manual labour with the help of tools made of iron or wooden crowbar that is mounted standing vertically with the blade facing upward about 80 cm from the ground. To increase the number of coconut products, it is designed the coconut dehusker machine. The main component of the machine were two rollers that rotate each other in opposite directions with each roller embedded iron-shaped nails that work to tear the coconut husk. Each roller has a different rotational speed. This machine has dimensions of 98 cm x 51 cm x 95 cm. Roller length is 50 cm and diameter 4 inches. The power source of the machine is a 2 HP electric motor, the speed was reduced by using 2 speeds reducer with the ratio of 1:20 and 1:30 respectively. From the performance test of this machine can dehusk 100 coconuts per hour. The operational basic cost of the machine equal to Rp 129.89 per coconut (about 1 cent) and Break Event Point is 12.387 coconut per year from the result of the performance test. From the economic analysis machine can be concluded that the use of this machine is better when compared to human labour which has limitation to duration and capacity.
, Kesuma Sayuti, Rina Yenrina
Journal of Applied Agricultural Science and Technology, Volume 3, pp 268-279; doi:10.32530/jaast.v3i2.114

Abstract:
Base on previous studies showing that sugar palm fruit can be made as jam with the addition of Asian melastome fruit as a natural coloring. This sugar palm fruit jam product is packaged with jar and pouch packaging. shelf Life information for this product is unknown. The purpose of this study is to determine the rate of change in quality, critical parameters, and estimate the shelf life of sugar palm fruit jam with Arrhenius Model which is simulated at three storage temperature conditions (28⁰C, 38⁰C, and 48⁰C). Parameters observed during the storage process are water content, water activity (aw), pH, color (L), anthocyanin, and antioxidant activity (IC50). The results showed that the smallest activation energy value was used to determine product shelf life, it is color parameters (L) (first order reaction) with linear regression y = -4715.x + 9,787 on jar bottle packaging and y = -2021.x + 1,387 on packaging pouch. The age of storing sugar palm fruit jam with jar bottles is 93 days at 28⁰C and on the packaging pouch for 40 days at 28⁰C.
Mavinker Rangappa Sanjay, Suchart Siengchin
Journal of Applied Agricultural Science and Technology, Volume 3, pp 178-178; doi:10.32530/jaast.v3i2.108

, Soerjono Hadi Sutjahyo, Nurheni Wijayanto, Purnama Hidayat, Rachman Kurniawan
Journal of Applied Agricultural Science and Technology, Volume 3, pp 239-256; doi:10.32530/jaast.v3i2.119

Abstract:
The objective of this research was to formulate a policy strategy for integrated pest management by using SWOT AHP methods (case study on vegetable cultivation in Lampung Province). This method used A’WOT; the combination of AHP (Analytical Hierarchy Process) analysis and SWOT (Strength-Weakness-Opportunity-Threat) analysis. The analysis result showed the main strength factors becoming the base for sustainable agricultural business were the availability of good structures and infrastructures both in production and marketing, and the availability of sufficient production structure (seeds) with good quality and quantity. The weakness factors becoming concern were dominantly lack of institutional funding (capital) for vegetable business, many problems in the integrated pest management (IPM) technology implementation stage, many problems in good agriculture practices (GAP), and numbers of families making their life as farmers. The opportunity factors were the availability of IPM and GAP technologies, growing campaign for consuming domestic products reducing import, and high government commitment to improve vegetable farmers’ welfare. The threats to concern were no protection operational base and farmer’s empowerment, very few institutional funding (capital) for vegetable business, and many problems in the GAP and technology implementation. Six strategies becoming priority in order were drafting the regulation and standard of operation that regulate IPM and GAP implementations; strengthening farmer’ institution, capital and agricultural insurance; drafting legality of operational protection and farmer’s empowerment; agricultural intensification in order to improve quantity, quality, safety, and environmental insight for food security and independency; optimization of technology transfer by socialization or education of IPM and GAP for vegetable crops; and inexpensive IPM system based controlling technology development and effective and efficient of alternative production structures.
Naswir Naswir, , A Irwan
Journal of Applied Agricultural Science and Technology, Volume 3, pp 320-327; doi:10.32530/jaast.v3i2.104

Abstract:
This research is aim to provide design and prototype of rotary electrical controled drumdrier machine for drying organic fertilizer to increased production capacity and quality by using a source of heat energy from electricity. This machine consists of five main components i.e. drying cylinder, heating unit, support frame, engine and transmission system. Engine specifications are high 130 cm, 720 cm long, and 120 cm wide, cylinder diameter 60 cm, power engine 14 hp, and heating temperature 142 oC. engine performance test are: capasity 805,03 kg/hours, drying rate 27,40 %/hours, noise level 81,54 db. cost analysis result are operational cost 155,06 Rp/kg and Break Event Point 159.219,73 kg/years
, Nelson Elita, Eddy Susiawan
Journal of Applied Agricultural Science and Technology, Volume 3, pp 57-66; doi:10.32530/jaast.v3i1.93

Abstract:
Program Kemitraan Masyarakat (PKM) penerapan budidaya padi metode SRI dengan teknologi bioorganik plus dilakukan pada Kelompok Tani (K.T) Sakinah dan Kelompok Tani (K.T) Sejahtera di Jorong Ganting Taram dengan tujuan untuk mengatasi permasalahan petani yang berbudidaya padi dengan sistem konvensional yaitu rendahnya kuantitas produksi dan pendapatan yang disebabkan oleh tingginya pemakaian bibit dan pupuk anorganik, kurangnya pemahaman pemanfaatan kotoran dan urin sapi menjadi kompos biooganik plus dan pupuk cair organik (POC), pertengkaran akibat perebutan air, serangan hama dan penyakit serta pembakaran jerami. Metode pelaksanaan PKM adalah dengan memberikan penyuluhan, pelatihan, pembuatan demplot dan evaluasi pada setiap kegiatan. Materi pada penyuluhan yaitu cara mengatasi masalah budidaya padi dengan sistem konvensional dan beralih ke metode SRI. Kegiatan pelatihan yaitu: perbanyakan massal Trichoderma harzianum dan Pseudomonas fluorescents serta pembuatan pupuk bioorganik plus dan pupuk organik cair. Demplot dilakukan di lahan kedua kelompok tani. Hasil pelatihan diaplikasikan dengan budidaya padi metode SRI. Hasil pengamatan di K.T Sejahtera dan K.T Sakinah dengan budidaya padi metode SRI diperoleh data yaitu : tinggi tanaman 117-128 cm, jumlah anakan 47-50, jumlah malai/rumpun 36-42, jumlah gabah/malai 101-110 butir, bobot 1000 butir 21,0-21,2 gram dan produksi/ha 8,4810,88 ton. Pada sistem konvensional diperoleh data yaitu : tinggi tanaman 90-93 cm, jumlah anakan 30-31, jumlah malai/rumpun 24-27, jumlah gabah/malai 76-80 butir, bobot 1000 butir 19,5-19,8 gram dan produksi/ha 3,95-4,75 ton. Hasil analisa finansial B/C pada metode SRI dan konvensional adalah 2,95-4,45 dan 0,18-0,43. Kesimpulannya pemberian pupuk bioorganik plus pada tanaman padi metode SRI mampu meningkatkan pertumbuhan vegetatif dan generatif tanaman padi.
Sri Aulia Novita, , Jamaluddin Jamaluddin, Indra Laksmana, Rildiwan Rildiwan
Journal of Applied Agricultural Science and Technology, Volume 3, pp 91-104; doi:10.32530/jaast.v3i1.79

Abstract:
Kelompok Tani Minyak Serai Wangi Berkat Yakin merupakan kelompok tani penggerak diDesa Balai Batu Sandaran yang mengelola industri penyulingan minyak serai wangi. Pengolahan serai wangi harus memperhatikan aspek efisiensi dan efektifitas agar mampu memberikan keuntungan yang maksimal dan meningkatkan nilai tambah pada serai wangi. Tujuan penelitian adalah menentukan nilai tambah dan kelayakan finansial usaha minyak serai wangi pada Industri Minyak Serai Wangi Berkat Yakin Desa Balai Batu Sandaran. Analisis data dilakukan dengan Metode Hayami dan parameter kuantitatif dalam analisis kelayakan finansial ditunjukkan oleh indikator seperti: Benefit Cost Ratio (B/C),Internal Rate of Return (IRR), Net Present Value (NPV) dan Payback Periods (PBP). Hasil analisis nilai tambah yang diperoleh dari hasil pengolahan serai wangi dengan bahan baku 25.000kg menjadi minyak serai wangi sebanyak 400 kg adalah Rp.3.080/kg. Sedangkan rasio nilai tambah produk minyak serai wangi adalah sebesar 84%, artinya 84% dari nilai output (produk minyak serai wangi) merupakan nilai tambah yang diperoleh dari proses pengolahan serai wangi menjadi minyak serai wangi. Hasil perhitungan analisis kelayakan finansial industri minyak serai wangi didapatkan NPV Rp. 1.635.698.925,- IRR 37,60%,B/C Ratio 1,45, dan PBP adalah 3 tahun 6,5 bulan. Ditinjau dari aspek ekonomi, usaha produksi minyak serai wangi dapat dikatakan layak dan menguntungkan.
Journal of Applied Agricultural Science and Technology, Volume 3, pp 82-90; doi:10.32530/jaast.v3i1.71

Abstract:
Dalam pengembangan lahan gambut untuk tanaman padi sawah terdapat beberapa faktor pembatas,diantaranya adalah kandungan asam fenolat yang tinggi sehingga dapat meracuni tanaman dan lemahnya ikatan kation K pada tanah gambut. Penelitian ini bertujuan untuk mengetahui distribusi K pada tanaman dan K tercuci akibat pencucian dan pemakaian zeolit serta kalium. Percobaan dilakukan dengan Rancangan Faktorial yaitu perlakuan zeolit (0, 5, 10 dan 15 g/kg), K (0, 125, 250 dan 375 mg K/kg) dan pencucian dengan tiga kali pengulangan. Semua perlakuan ditambahkan Fe3+ sebanyak 2,5% serapan maksimum Fe3+ dan diinkubasi sebulan sebelum ditanam. Tanah yang digunakan pada penelitian ini diambil dari tanah gambut pantai (Lagan) dan peralihan (Dendang) Jambi. Percobaan menggunakan pot yang berdiameter 25 cm dan tinggi 40 cm. Pada kedalaman 40 cm dilubangi dengan diameter 1 cm dan ditutup kembali (pencucian).Tiap pot ditanami 3 bibit padi IR-64 berumur 21 hari, ditambahkan 86Rb dan pemupukan dasar. Pencucian dilakukan dengan 1.000 ml air bebas ion setiap minggu sampai umur tanaman 4 minggu (panen), untuk menganalisa distribusi K pada tanaman. Pengaruh pencucian, pemberian zeolit dan kalium berpengaruh nyata terhadap 86Rb pada bagian tanaman dan 86Rb tercuci. Pemberian zeolit 15 g/kg dan K 375 mg K/kg dengan pencucian pada gambut pantai dan peralihan diperoleh 86Rb pada bagian atas tanaman : 4,792% ; 1,450% dan akar 0,490% ; 0,316%. Sedangkan tanpa pencucian pada gambut pantai dan peralihan, 86Rb pada bagian atas tanaman yaitu 1,599% ; 1,059 dan akar 0,253% ; 0,204%. Kehilangan K pada tanah gambut akan berkurang akibat pencucian dengan peningkatan takaran zeolit. Pada gambut pantai dengan pemberian zeolit 5-15 g/kg mampu mengurangi kehilangan K dari pupuk sebanyak 0,1-3,0%, sedangkan untuk gambut peralihan 0,04-2,2%.
, Ruri Jalil Jabbar, Fanny Yuliana Batubara, Zulnadi Zulnadi, Irwan Anas, Yudistira Yudistira
Journal of Applied Agricultural Science and Technology, Volume 3, pp 157-165; doi:10.32530/jaast.v3i1.84

Abstract:
Dalam proses produksi kerupuk ikan, tahapan pengadukan adonan kerupuk merupakan kegiatan paling membutuhkan daya besar, sehingga banyak produsen atau pengusaha kerupuk melakukan pengadukan dengan menginjak-injak adonan dengan kaki supaya cepat kalis. Cara pengadukan seperti ini tentu berpengaruh pada kehigienisan kerupuk dan apabila dilihat konsumen, akan menurunkan selera dan minat beli. Rancang bangun alat pengaduk adonan kerupuk pada penelitian ini menitikberatkan pada disain yang cocok untuk usaha skala kecil dan menengah yang mudah dalam penggunaan dan perawatan serta murah dalam biaya pengoperasian. Untuk itu penulis melakukan rancang bangun alat pengaduk adonan kerupuk tipe horizontal yang mempermudah pengeluaran adonan setelah kalis dengan kapasitas produksi rata-rata 13,5 kg/jam. Dari hasil analisa kelayakan ekonomi didapatkan biaya tetap Rp.2.179.302,9/tahun, biaya tidak tetap Rp.13.026,9786/jam, biaya pokok pengoperasian mesin Rp.101,50/kg dan break event point 5.368,5kg/tahun.
Rince Alfia Fadri, Kesuma Sayuti, Novizar Nazir, Irfan Suliansyah
Journal of Applied Agricultural Science and Technology, Volume 3, pp 129-145; doi:10.32530/jaast.v3i1.82

Abstract:
Makalah ini berisi tinjauan komprehensif terhadap literatur tentang proses penyangraian kopi dan pembentukan akrilamida sebagai hasil sampingan proses pengolahan biji kopi diterbitkan antara tahun 2008 hingga 2018. bagian besar penelitian bersifat empiris dan sebagian besar studi berfokus pada proses pengolahan kopi dan efek akrilamida pada kesehatan tubuh. Temuan penting lainnya, sebagian kajian menganggap bahwa kopi mampu meningkatkan kesehatan tubuh. Ulasan ini menyajikan pemahaman yang lebih baik tentang manfaat dan bahaya kopi serta pengaruh penyangraian terhadap mutu kopi yang dihasilkan. Tinjauan ini juga menyoroti tentang alat sangrai kopi yang relatif kurang dieksplorasi. Akademisi, peneliti dan kelompok tani dapat menggunakan hasil kajian ini sebagai pedoman dalam menyangrai kopi. Penyangraian dengan waktu dan suhu yang efektif dapat mengurangi pembentukan akrilamida pada kopi, namun perlu kajian literatur terbaru yang berkaitan dengan proses pengolahan kopi terutama pada proses penyangraian.
Alfi Asben, Gunarif Taib, Yuni Rahmawati
Journal of Applied Agricultural Science and Technology, Volume 3, pp 1-14; doi:10.32530/jaast.v3i1.61

Abstract:
Pengolahan selai dengan bahan baku kolang kaling dan buah markisa akan memberikan warna selai yang kurang menarik. Pigmen angkak dapat dijadikan alternatif pewarna alami yang baik dan cukup stabil dimana juga dapat meningkatkan aktivitas antioksidan pada produk. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan dan konsentrasi yang tepat bubuk angkak terhadap karakteristik selai kolang kaling markisa. Penelitian dilakukan menggunakan rancangan acak lengkap (RAL) dengan 5 perlakuan dan 3 kali ulangan. Perlakuan tersebut adalah penambahan bubuk angkak yaitu : A (tanpa (0%)), B (1%), C (2%), D (3%) dan E (4%). Data dianalisis secara statistik dengan menggunakan analisis of varian (ANOVA) dan dilanjutkan dengan Duncan New Multiple Range Test (DNMRT) pada taraf 5%. Hasil penelitian memperlihatkan bahwa penambahan angkak memberikan hasil berpengaruh nyata pada hampir semua parameter karakteristik selai yang dianalisis. Penambahan bubuk angkak 1% (B) merupakan perlakuan terbaik berdasarkan analisis sensori dengan karakteristik sebagai berikut : kadar air 28,18%, ohue 11,99, aktivitas antioksidan 20,58% (pada konsentrasi 100.000 ppm), pH 3,65, total padatan terlarut 59,33%, kadar sakarosa 55,42%, angka lempeng total 1,0 x103 cfu/g dan lovastatin 3,09 ppm.
, Isthafa Harits Utami, Ade Moetangad Kramadibrata, Totok Herwanto
Journal of Applied Agricultural Science and Technology, Volume 3, pp 15-28; doi:10.32530/jaast.v3i1.56

Abstract:
Unit Penggiling Padi (Compact Rice Milling–CRM 10) belum memiliki spesifikasi teknis dan nilai ekonomis, karena itu uji kinerja dan analisis ekonomi mesin ini perlu dilakukan agar mesin siap dipasarkan kepada masyarakat pengguna. Penelitian ini bertujuan untuk melakukan uji kinerja dan analisis ekonomi pada mesin CRM–10. Analisis Deskriptif digunakan untuk pengukuran, pengamatan, perhitungan, analisis, pengujian, dan mengevaluasi kinerja mesin dan tingkat kelayakan ekonominya. Hasil uji kinerja pada varietas Inpago 5 dan Inpari 4 berturut-turut menunjukkan bahwa mesin memiliki kapasitas penggilingan 897,63 kg/jam dan 1003,2 kg/jam, efisiensi penggilingan 78,33% dan 65%, kebutuhan daya 28,2 kW dan 28,9 kW, energi spesifik 112,7 kJ/kg dan 107,7 kJ/kg, dengan tingkat kebisingan mesin di bawah ambang batas yaitu 87,23 dan 87,3 dB, serta rendemen penggilingan 68,5% dan 62,9%. Sedang dari hasil analisis ekonomi mesin CRM berturut-turut, telah memenuhi kriteria dengan NPV > 0 yaitu Rp 413.768.068 dan Rp 466.299.086, dengan nilai IRR 16,32% dan 18,0% , BC ratio > 1 dengan nilai 1,17 dan 1,19, serta periode pengembalian modal tercapai pada tahun ke-3.
Journal of Applied Agricultural Science and Technology, Volume 3, pp 29-40; doi:10.32530/jaast.v3i1.78

Abstract:
Pengembangan tanaman kedelai belum menjadi prioritas utama di Sumatera Barat, akan tetapi permintaan kedelai sebagai bahan pangan tinggi. Memenuhi permintaan produk kedelai maka budidaya kedelai dengan memanfaatkan lahan sub-optimal seperti lahan kering dan lahan rawa. Usaha ini mendukung pengadaan benih secara jalur benih antar lokasi antar musim (jabalsim). Budidaya lahan sub-optimal memiliki permasalahan kesuburan lahan dan ketersediaan air. Pemberian kompos berbahan MOL rumpun bambu diharapkan mengatasi permasalahan kondisi lahan sehingga produktivitas tanaman tercapai. Tujuan penelitian yaitu menguji pemberian MOL rumpun bambu dalam bentuk kompos memperbaiki kondisi lahan dan menggantikan fungsi dari pupuk buatan pabrik rekomendasi; mengukur produktivitas tanaman kedelai pada lahan kering dan lahan rawa. Penelitian telah dilaksanakan pada akhir musim hujan (Bulan Maret sampai Agustus 2016), pada dua lokasi yaitu lahan kering dan lahan rawa, berada di Kecamatan Harau, Kabupaten Lima Puluh Kota. Pada setiap lokasi penelitian diberikan perlakuan dan rancangan percobaan yang sama. Aplikasi perlakuan pada tanaman kedelai Varietas Anjasmoro. Penelitian menggunakan rancangan acak kelompok lengkap (RAKL) dengan satu faktor dan tiga ulangan. Perlakuan berupa dosis MOL rumpun bambu dengan lima taraf perlakuan yaitu: dosis 5 t/ha, dosis 10 t/ha, dosis 15 t/ha, dosis 20 t/ha dan kontrol berupa pupuk buatan pabrik sesuai rekomendasi. Parameter pengamatan berupa pertumbuhan dan produksi kedelai. Hasil penelitian menunjukkan bahwa pemberian kompos berbahan MOL rumpun bambu dapat memperbaiki kondisi lahan dan menggantikan fungsi dari pupuk buatan pabrik rekomendasi. Diperoleh dosis optimal kompos yaitu 15 t/ha berpengaruh nyata meningkatkan pertumbuhan dan produksi kedelai Varietas Anjasmoro dibandingkan kontrol, pada dua lokasi penelitian.
, Titi Ratnasari
Journal of Applied Agricultural Science and Technology, Volume 3, pp 41-50; doi:10.32530/jaast.v3i1.81

Abstract:
Energi listrik menjadi suatu kebutuhan dalam era modern ini. Pertumbuhan ekonomi dan perkembangan zaman mengakibatkan kebutuhan energi listrik semakin naik tiap tahun. Pembangkit Listrik Tenaga Biomassa 1x9,9 MW di Deli Serdang merupakan pembangkit yang di proyeksikan akan beroperasi tahun 2019. PLTBm Deli Serdang ini akan di interkoneksikan dengan sistem 20 kV eksisting dengan opsi titik sambung. Pemilihan opsi ini penting karena untuk memastikan sistem eksisting masih tetap dalam kondisi normal. Hasil penelitian ini adalah dengan melakukan simulasi penyambungan PLTBm dengan ke GI terdekat. Penghantar yang digunakan dalam penyambungan ialah AAAC 240 mm 2 dengan konfigurasi jaringan dua sirkuit. Studi yang dilakukan meliputi aliran daya, jatuh tegangan, losses dan hubung singkat. Dengan dilakukannya studi tersebut dapat dilihat status operasi sistem sebelum dan sesudah interkoneksi. Status operasi sistem ini meliputi keadaan tegangan dan hubung singkat normal, marginal dan kritis.
, Herwita Idris
Journal of Applied Agricultural Science and Technology, Volume 3, pp 67-72; doi:10.32530/jaast.v3i1.65

Abstract:
Kacang tanah merupakan salah satu jenis kacang-kacangan yang mempunyai nilai gizi tinggi. Akan tetapi produksi kacang tanah di Indonesia masih rendah dibandingkan dengan negara lain. Untuk meningkatkan produktivitas kacang tanah perlu dilakukan penambahan nutrisi pada tanaman namun dengan mahalnya harga pupuk perlu dicari alternatif lain. Untuk itu dilakukan penelitian pemanfaatan abu limbah penyulingan serai wangi menjadi pupuk organik untuk meningkatkan produktivitas kacang tanah. Penelitian ini dilakukan di Kebun Percobaan Balittro Laing Solok sejak September sampai Desember 2017. Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan 4 perlakuan yaitu pemberian abu limbah penyulingan serai wangi dengan dosis : 1) 200 g 2) 250 g 3) 300 g dan 4) 0 g pada 8 tanaman per plot diulang 6 kali. Benih kacang tanah ditanam dalam kantong berukuran 45 x 60 cm yang berisi media tanah dan pupuk kandang dengan volume 1 kg/kantong. Variabel yang diamati meliputi tinggi tanaman, jumlah cabang, jumlah polong, bobot basah, bobot kering serta bobot kering/100 biji. Pengamatan pertumbuhan dilakukan setiap dua minggu dimulai tiga minggu setelah tanam. Hasil penelitian menunjukan bahwa pertumbuhan vegetatif dan produksi tanaman kacang tanah mempunyai perbedaan yang signifikan dari setiap dosis abu limbah penyulingan yang digunakan. Dengan hasil yang terbaik pada dosis abu limbah serai wangi 300 g/kantong terlihat pada tinggi tanaman, jumlah cabang, jumlah polong, berat basah, berat kering dan berat per 100 biji berturut-turut 46,82 cm, 4,76 buah, 37,72 buah, 80,31 g, 35,40 g dan 62,36.
Mismawarni Srima Ningsih, Irfan Suliansyah, Aswaldi Anwar, Yusniwati Yusniwati
Journal of Applied Agricultural Science and Technology, Volume 3, pp 122-128; doi:10.32530/jaast.v3i1.64

Abstract:
Umbi dan biji merupakan bahan pertanaman yang sering digunakan petani untuk mendapatkan benih bengkuang dimana masing-masing memiliki kelebihan dan kekurangan. Penelitian ini bertujuan untuk melihat pengaruh bahan pertanaman penghasil benih terhadap kualitas benih yang dihasilkan pada tiga aksesi bengkuang (Kuranji, Padang Sidimpuan dan Blitar). Penelitian telah dilaksanakan pada bulan April sampai Juni 2018 dengan metoda Deskriptif. Pengamatan dilakukan terhadap 100 sampel dari tiap-tiap aksesi. Parameter yang diamati adalah panjang, lebar dan tebal biji, berat biji saat panen, berat biji saat polong pecah, berat biji kering, berat biji saat berkecambah, daya kecambah, nilai indeks perkecambahan dan uji muncul tanah. Hasil dianalisis dengan pengujian Parametrik, Independent Sample-T Test taraf 5% menggunakan program SPSS Statistik 19. Hasil memperlihatkan bahwa benih yang berasal dari bahan pertanaman umbi dan biji pada bengkuang tidak berbeda ukuran panjang, lebar dan tebal biji, berat saat panen, berat saat polong pecah, berat kering, berat saat berkecambah, nilai indeks perkecambahan dan uji muncul tanah pada ketiga aksesi uji. Perbedaan hanya terlihat pada daya kecambah. Berdasarkan pengujian dan analisis statistik yang telah dilakukan pada beberapa parameter pengamatan dapat diambil kesimpulan bahwa umbi dan biji sama-sama dapat digunakan sebagai bahan pertanaman penghasil benih pada pembudidayaan bengkuang.
Journal of Applied Agricultural Science and Technology, Volume 3, pp 166-177; doi:10.32530/jaast.v3i1.101

Abstract:
Penelitian tentang rancang bangun prototipe mesin penyiang mekanis pada budidaya tanaman padi (Oryza sativa L.) system of rice intensification (SRI) dilaksanakan pada bulan Febuari sampai dengan April 2009. Tujuan penelitian ini adalah menciptakan sebuah prototipe mesin penyiang gulma padi sawah mekanis yang efisien dan berkapasitas tinggi, sesuai dengan kebutuhan petani sehingga dapat mengatasi masalah keterbatasan tenaga kerja untuk melakukan penyiangan gulma. Penelitian ini dilaksanakan dengan metode rancang bangun yang menggunakan pendekatan hubungan sebab akibat, diagram alir proses, pembuatan model matematis. Perancangan konsep produk, dimulai dengan analisis kebutuhan, blok diagram dan analisis validasi. Analisis validasi mesin melihat kinerja mesin keseluruhan. Hasil penelitian diperoleh kapasitas efektif penyiangan 0,0547 ha/jam, efisiensi lapang 49,37 %, kehilangan waktu belok 32,03 %, tingkat kerusakan tanaman 7,7 %, gulma tidak tersiangi 3,12 %. Daya motor terpakai 2,52 Hp, tingkat kebisingan dalam batas diizinkan. Penyiangan dengan mesin tergolong kerja sedang. Hasil analisis ekenomi menunjukan biaya pokok penyiangan per hektar Rp. 463.322,67 dengan BEP penyiangan 29,03 ha per tahun, NPV Rp. 7.139.779,01 dan B/C Ratio 1,093 pada tingkat suku bunga 10 %, yang berarti mesin layak digunakan. Agar mesin dapat diterima di masyarakat, perlu sosialisasi, penyempurnaan sistem transmisi, penggunaan material lebih ringan serta perlu pengaturan jarak dan kelurusan barisan tanam agar tercapai kinerja mesin yang optimal.
, Khandra Fahmy, Syuryani Syahrul, Neni Trimedona
Journal of Applied Agricultural Science and Technology, Volume 3, pp 73-81; doi:10.32530/jaast.v3i1.58

Abstract:
Penelitian ini bertujuan untuk mengetahui pengaruh substitusi tepung bengkuang terhadap organoleptik dan karakteristik cookies. Perlakuan yang dilakukan dalam penelitian ini adalah tingkat substitusi tepung bengkuang, yakni tanpa perlakuan (kontrol), penambahan tepung bengkuang 20%, 30% dan 50%. Analisis yang dilakukan terhadap cookies adalah kadar air, kadar abu, kadar protein, kadar lemak, kadar karbohidrat, kadar serat kasar, daya kembang dan uji organoleptik. Substitusi tepung bengkuang memberikan pengaruh yang berbeda nyata terhadap kadar protein, kadar karbohidrat dan kadar serat kasar dari cookies yang dihasilkan. Dari hasil uji organoleptik yang dilakukan, substitusi tepung bengkuang yang paling disukai oleh panelis adalah cookies dengan substitusi tepung bengkuang 30% dengan warna 3,92 (agak suka), aroma 3,96 (agak suka), rasa 4,32 (agak suka) dan tekstur 4,40 (agak suka). Cookies dengan penambahan tepung bengkuang sebanyak 30% memiliki kadar air 1,11%, kadar abu 1,86%, kadar protein 8,65%, kadar lemak 24,15%, karbohidrat 64,24%, kadar serat kasar 1,17%, dan daya kembang 51,60%.
Ferawati Ferawati, Sri Melia, Endang Purwati, Iskandar Zulkarnain, Hendri Purwanto
Journal of Applied Agricultural Science and Technology, Volume 3, pp 51-56; doi:10.32530/jaast.v3i1.70

Abstract:
Penelitian ini bertujuan untuk mengetahui kualitas mikrobiologis susu kambing yang difermentasi dengan Lactobacillus fermentum strain NCC2970 dengan waktu penyimpanan susu fermentasi yang berbeda. Metode yang digunakan adalah metode eksperimen rancangan acak lengkap dengan 4 perlakuan waktu penyimpanan susu kambing fermentasi pada suhu refrigerator 4oC yaitu selama0, 5, 10 dan 15 hari dengan 5 ulangan. Hasil penelitian menunjukkan nilai pH mengalami penurunan berkisar antara 4,09-4,04. Total asam tertitrasi mengalami peningkatan selama penyimpanan dengan nilai 0,80 hingga mencapai 1,52% sampai penyimpanan 15 hari. Total koloni bakteri asam laktat berkisar antara 4.8 x 108cfu/ml sampai 21.6 x108 cfu/ml. Nilai Total Plate Count selama penyimpanan mengalami penurunan dari 219.4 x 102cfu/ml sampai 106.4 x 102cfu/ml. Berdasarkan hasil penelitian ini dapat disimpulkan bahwa susu kambing fermentasi dengan Lactobacillus fermentum strain NCC2970 dapat mempertahankan kualitas sampai masa penyimpanan 15 hari dengan viabilitas bakteri asam laktat yang memenuhi kategori sebagai probiotik.
, Mya Novita Sari
Journal of Applied Agricultural Science and Technology, Volume 3, pp 105-114; doi:10.32530/jaast.v3i1.63

Abstract:
Perbanyakan secara kultur jaringan banyak dilakukan untuk memperbanyak bibit Anggrek. Namun demikian tahapan aklimatisasi dalam kultur jaringan merupakan faktor yang sangat penting diperhatikan karena kondisi iklim di rumah plastik sangat berbeda dengan kondisi di dalam botol kultur. Disamping itu media tanam dan pupuk yang diberikan pada tahap aklimatisasi perlu diperhatikan supaya bibit tanaman anggrek bisa tumbuh dan berkembang secara optimal. Penelitian ini bertujuan untuk mendapatkan media tanam dan mendapatkan pupuk organik cair yang baik pada tahap aklimatisasi terhadap pertumbuhan planlet Anggrek Bulan (Phalaenopsis amabilisi) hasil kultur jaringan. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dua faktor dengan 3 ulangan. Faktor pertama adalah media akar pakis, sekam padi dan kompos kopi. Faktor kedua adalah kontrol, pupuk cair Supra dan Bioto Grow. Variabel yang diamati adalah persentase hidup planlet, pertambahan tinggi tanaman, saat tumbuh daun baru, pertambahan panjang daun, pertambahan jumlah daun, pertambahan diameter batang. Data hasil pengamatan dianalisis dengan menggunakan analisis varian dan melalui uji lanjut BNT. Hasil penelitian menunjukkan bahwa kedua jenis pupuk yang digunakan tidak berpengaruh nyata terhadap pertambahan tinggi planlet, saat tumbuh daun baru, panjang daun, jumlah daun, namun berpengaruh nyata terhadap diameter batang. Ketiga jenis media tanam memberikan pengaruh yang nyata terhadap tinggi tanaman, saat tumbuh daun baru, panjang daun, jumlah daun, dan diameter batang. Sedangkan interaksi pada kedua perlakuan tersebut tidak menujukkan pengaruh yang nyata terhadap semua variabel yang diamati. Penggunaan media yang bagus terlihat pada media kompos kopi dan akar pakis melalui pemberian pupuk cair Bioto Grow.
Hendra Hendra
Journal of Applied Agricultural Science and Technology, Volume 3, pp 115-121; doi:10.32530/jaast.v3i1.103

Abstract:
Penelitian ini bertujuan untuk melakukan analisa terhadap sistem pemindai 3D untuk komponen mesin peralatan pertanian menggunakan teknologi kinect. Pemanfaat teknologi kinect ini diharapkan mampu memindai dan mengambil gambar komponen-komponen mesin pertanian secara 3D. Analisa yang digunakan adalah untuk mengetahui tingkat akurasi kinect dalam memindai komponen mesin pertanian. Pemindai 3D ini menggunakan teknologi kinect sebagai sesor utama. Kinect terdiri dari sensor infra red, sensor depth image coms dan sensor color image CMOS. Semua sensor kinect memindai obyek secara 3D dan kemudian diproses oleh processor kinect. Hasil proses tersebut dilanjutkan ke perangkat lunak pada pemroses data sehingga mengasilkan file hasil pemindaian dalam bentuk 3D. Hasil pengujian pada komponen dengan ukuran yang berbeda-beda menunjukan bahwa komponen dengan ukuran dibawah diameter 7,5 dan tinggi 10 cm tidak mampu dipindai. Komponen dengan ukuran diatas diameter 10 cm dan tinggi 15 cm dapat dipindai dengan akurasi yang cukup baik.
Adnan Adnan
Journal of Applied Agricultural Science and Technology, Volume 3, pp 146-156; doi:10.32530/jaast.v3i1.68

Abstract:
Penelitian ini menggunakan desain penelitian Rancangan Acak Kelompok Faktorial dengan uji BNT pada tingkat signifikan 5%. Perlakuan eksperimental menggunakan dua faktor, yaitu bobot umbi kentang (B) dan metode menempatkan benih di lubang tanam (K). Faktor perlakuan pertama adalah bobot umbi bibit (B) empat (tingkat yang terdiri dari B1 = 25-30 gram, B2 = 35-40 gram, B3 = 45-50 gram dan B4 = 55-60 gram. Faktor perlakuan kedua adalah metode penempatan bibit di lubang tanam (K) empat level terdiri dari K1 = posisi umbi membentuk sudut 00, K2 = posisi umbi membentuk sudut 300, K3 = posisi umbi membentuk sudut 600 dan K4 = posisi umbi membentuk sudut 900. Berdasarkan uji lanjut tes BNT dengan taraf 5%, perlakuan tunggal bobot umbi 45-50 gram dan perlakuan tunggal letak umbi 30o berbedanyata dengan perlakuan lainnya terhadap jumlah umbi. kombinasi dari dua perlakuan bobot umbi dari 55-60 gram ditempatkan pada metode penempatan letak umbi 900 berbeda nyata dengan perlakuan lainnya terhadap jumlah batang. Perlakuan bobot umbi 60o berbeda nyata dengan perlakuan lainnya terhadap bobot basah. Kombinasi bobot umbi 55-60 gram pada letak umbi 90o terdapat interaksi pada variabel bobot basah.. Kesimpulan dari penelitian adalah perlakuan tunggal bobot umbi 45-50 gram dengan perlakuan tunggal letak umbi 300 berpengaruh terhadap jumlah umbi. Kombinasi bobot umbi 55-60 gram ditempatkan pada letak umbi 60o menghasilkan jumlah umbi optimum, tetapi kombinasi dua perlakuan 55-60 gram yang ditempatkan letak umbi 900 terdapat interaksi pada variabel bobot basah.
Sardino Sardino, , Adek Saputra, Rully Syahta, Fithra Herdian, Jamaluddin Jamaluddin
Journal of Applied Agricultural Science and Technology, Volume 2, pp 72-82; doi:10.32530/jaast.v2i2.47

Abstract:
Pemanjatan kelapa umumnya dilakukan secara tradisional yaitu dengan memanjat pohon kelapa secara langsung tanpa menggunakan alat. Pemanjatan secara langsung mempunyai resiko kecelakaan yang besar, karena tidak adanya pengaman saat memanjat. Untuk mengatasi masalah tersebut dirancang sebuah alat panjat kelapa portable yang aman, nyaman dan mudah dioperasikan karena dilengkapai dengan safety belt. Alat ini bekerja melalui efek jeratan pada pohon kelapa Berdasarkan pengujian yang dilakukan, didapatkan hasil kecepatan pemanjatan dengan alat panjat kelapa portable ini adalah 0.27 meter/detik, kecepatan pemetikan 3 detik/buah dan biaya pokok alat Rp. 8,02 /meter. Dengan alat ini pemanjat lebih bebas menggunakan kedua tangan dalam membersihkan tajuk kelapa dan pemetikannya karena tubuh kita ditopang/ditahan oleh safety belt. Secara umum alat ini efektif digunakan untuk melakukan pemanjatan kelapa.
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