(searched for: doi:(10.31970/*))
Jurnal Agrotech, Volume 10, pp 27-34; doi:10.31970/agrotech.v10i1.50
This study aims to determine the effect of giving T. asperellum and compost on the growth and yield of shallots of the Palu Valley variety. This research was conducted on July to September 2019 in Oloboju Village, Sigi Biromaru District, Sigi Regency, Central Sulawesi Province. This research is a kind of experimental research that is designed by using a Randomized Group Design with grouping based on watering time. The treatments tested consisted of: P0 = Control (without treatment), P1 = T. asperellum 48g + 12 liters of water, P2 = T. asperellum 48g + 12kg compost and P3 = 12kg compost. To determine the effect of the treatment being tried, a diversity test was conducted. If the diversity test results show a real influence, then proceed with the Honestly Significant Difference test (BNJ) α = 0.05 to find out the differences between treatments. Treatment of various combinations of T. asperellum and compost significantly affected plant height at ages 15 and 25 HST, but had no significant effect on the number of leaves, leaf fresh weight, root fresh weight, leaf dry weight, root dry weight, number of tubers per clump, fresh tuber weight per clump, fresh tuber weight per plot and fresh tuber weight per hectare. The compost treatment gives a better effect on the height of plants aged 15 HST (average 15.09cm) and 25 HST (average 19.86cm).
Jurnal Agrotech, Volume 10, pp 9-14; doi:10.31970/agrotech.v10i1.46
This study aims to determine the amount of farm household income in clove farming and the contribution of clove farming to total farm household income in Mekar 2 Farmer Group in Dungingis Village, Dako Pemean Subdistrict, Tolitoli Regency. This research was conducted from July to September 2018. The research method used was the census method with a sample of 20 respondents. The results of this study indicate that clove farming income is the source of income that contributes the most from all sources of income of farm families, amounting to Rp.579,277,557 per year or 56.44%.
Jurnal Agrotech, Volume 10, pp 1-8; doi:10.31970/agrotech.v10i1.47
This study aims to determine the right planting time to obtain optimal sweet corn results in intercropping systems with peanut plants. This research was conducted in the Agricultural Land of Petobo Village, South Palu Village, Palu City, Central Sulawesi for 3 months starting from September to November 2017. The research was carried out using a one-factor Randomized Block Design (RBD), by grouping based on water sources. The treatments that were tried were the intercropping system (TS) planting time, as follows: TS0 = Sweet corn grown together with peanuts; TS1 = Sweet corn planted with 2 WAP peanuts; TS2 = Sweet corn planted with 4 WAP of peanut; TS3 = Sweet corn monoculture. Each treatment consisted of 3 replications so that there were 12 test unit plots. The results showed that the planting time treatment significantly affected the growth and yield of sweet corn on intercropping systems with peanuts. The treatment of planting time together between peanuts and sweet corn gave better growth than other treatments, but the sweet corn monoculture (TS3) treatment gave better results compared to other treatments. Good growth and yield of both plants is recommended at the same time between peanuts and sweet corn in intercropping systems
Jurnal Agrotech, Volume 10, pp 15-20; doi:10.31970/agrotech.v10i1.48
Root and soil interactions will alter the biochemical status of the rhizosphere, the acquisition of nutrients and impacted to plant growth. The biochemical of the rhizosphere is strongly influenced by the agriculture input e.g. fertilizer, herbicides and farm management system. Application of fertilizers, their effects are robust and difficult tobe quantified. The effect of fertilizer on the biochemical status rhizosphere and plant growth is different depending on the type of fertilizers, growth media, plant species, and also the environment condition, while the effect on plants will be specific to each plant. This research investigated on the effect of N inorganic fertilizer inputs from two sources namely Urea (CO(NH2)2) and Ammonium Sulfate or ZA ((NH4)2.SO4), and different fertilization method (homogenous and localized). Experiments showed application of N-Urea and N-ZA fertilizers reduced the rhizosphere pH until 1,4 point. However, acidity of the rhizosphere reduced microorganism colonies and respiration rate.
Jurnal Agrotech, Volume 10, pp 35-40; doi:10.31970/agrotech.v10i1.45
This study aims to determine the factors that influence production and the magnitude of the factors that affect the production of Pepper in Kongkomos Village, Basidondo District, Tolitoli Regency. The time of research and data collection was carried out from October to November 2018. The determination of the purpose and location was determined intentionally, based on the consideration that Kongkomos Village had the highest production in Tolidoli, Basidondo Regency. The results showed that the factors influencing Pepper Farming Production were variable land area (X1), pesticides (X2), urea fertilizer (X3) and labor (X4). Variable X (land area, pesticides, urea fertilizer and labor) simultaneously has a significant effect on the Y variable (pepper production) with a value of R2 = 0.97, which explains that the contribution of variable X (land area, perticide, urea fertilizer, labor) ) to increase the fall of the variable Y (pepper production) by 97% while the remaining 3% is caused by other factors outside the production function model analyzed. From the results of the persial test it was revealed that the variables X1 (land area) 2,968, X2 (pesticides) 2,817, X3 (urea fertilizer) 4,488 and X4 (labor) 3,104 were greater than the value of t-table 2.78 which meant that the variable X1 (area land)), X2 (pesticides), X3 (urea fertilizer) and X4 (labor) have a significant effect on pepper production.
Jurnal Agrotech, Volume 10, pp 21-26; doi:10.31970/agrotech.v10i1.49
This study aims to determine the amount of production and business acceptance of clove nurseries CV. Nurhafiza in Pulias village ogodeide district tolitoli regency. The time of the study was conducted in November to December 2018. The determination of the data collection method was derived from primary data and secondary data and the analysis used was the break even point (BEP). The result showed that the principal return point value was reached during the production of 3,922 trees . this means that the production of 3,922 clove nursery business CV. Nurhafiza in pulias village, Ogodeide Tolitoli Regency, was not profitable and did not lose or TR=TC. Break even point revenue is Rp. 15.689.990, which means that at Rp. 15. 689.990, CV. Nurhafiza in Pulias Village , Ogodeide Tolitoli Regency, was not profitable and did not lose or TR=TC.
Jurnal Pengolahan Pangan, Volume 5, pp 1-6; doi:10.31970/pangan.v5i1.33
Decapterus ruselli are a fisheries resource caught in the waters of Teluk Tomini and the Selat Makassar and have high economic value. The purpose of the study was to find out the profile of Decapterus ruselli fatty acids being caught at different locations. Methods used in this research is descriptive analysis. Results from this study indicate that plankton's abundance, weight in fish, protein levels, and amino acids in the waters of Teluk Tomini are higher than the Selat Makassar.
Jurnal Pengolahan Pangan, Volume 5, pp 15-20; doi:10.31970/pangan.v5i1.34
Osmotic dehydration is a method that can be used in the pretreatment of drying by immersing the material in a hypertonic solution. The purpose of this study was to examine the effect of concentration and temperature of the osmotic solution on water loss and solid gain to dragon fruit pieces during the osmotic dehydration process. Dragon fruit slices were immersed in osmotic solution with different concentration and temperature solution (30 oBrix, 50 oBrix, and 70 oBrix, as well as 30 oC, 40 oC, and 50 oC). The WL value for the concentration of 30 oBrix solution varies from 17.42% to 25.26%, for a 50 oBrix concentration is 32.84% to 50.38%, and for a 70 oBrix concentration is 39.89% to 57.99% . Thus, changes in the level of WL, concentration and temperature of the solution, where the higher the concentration and temperature of the solution, the greater the WL of the material. Meanwhile, for SG on materials, values ranged from 2.092% -10.010%. Based on the calculation of the Azuara model, the WL values ranged from 21.551% -75, 187% and 3.899% -17.575% for the SG value. The coefficient of determination for the calculation of the Azuara model is 0.938 - 0.992, thus the Azuara model can be said to be feasible for modeling the WL and SG values on osmotic dehydration of dragon fruit.
Jurnal Pengolahan Pangan, Volume 5, pp 7-14; doi:10.31970/pangan.v5i1.31
Breadfruit (Artocarpus altilis) is one of the main fruit producing plants of the Moraceae family. This plant has long been cultivated by the people of Indonesia and even in several countries in the Pacific region such as Fiji, Tahiti, the Samoan Islands, and Hawaii, breadfruit has been used as a traditional staple food. The consumption of breadfruit is generally still limited as a snack and a vegetable and as an alternative food source, breadfruit is proven to have a high nutritional content. The purpose of this study was to determine the effect of substitution of wheat flour with breadfruit (Artocarpus altilis) on the chemical quality of semprong cake or egg roll. The treatment design in this research on the substitution of wheat flour with breadfruit flour (Artocarpus altilis) on the chemical quality of semprong cakes, namely: P0 (100 grams of wheat flour), P1 (75 grams of wheat flour + 25 grams of breadfruit flour), P2 (50 grams of wheat flour + 50 grams of breadfruit flour), P3 (75 grams of wheat flour + 25 grams of breadfruit flour), and P4 (100 grams of breadfruit flour). The experimental design used was a randomized randomized design (CRD) with 5 treatments and 4 replications. The results of the proximate analysis test included moisture, ash, fat, protein and carbohydrate content, with an average value of 3.50% water content, 1.07% ash content, 26.97% fat content, 4.21% protein content, and 63.88% carbohydrate content.
Published: 18 May 2020
Guru Tua : Jurnal Pendidikan dan Pembelajaran, Volume 3, pp 21-28; doi:10.31970/gurutua.v3i1.41
This study aims to recognize whether there is any influence between learning independence and mathematics learning outcomes of students of SMPN 1 Bojonegara on Algebra Material. This research is an ex post facto study, with a population of all students of SMPN 1 Bojonegara and for the sample taken classes VII C and VII D, totaling 75 people. Data collection is done by using a questionnaire for learning independence and tests for learning outcomes. The results of this study were obtained by processing data using SPSS version 26 to test the normality of learning independence data, learning outcomes and residues as well as to test linearity and significance of regression. The results showed that there was a significant influence between learning independence on learning outcomes with an influence of 96.03%