ISSN / EISSN : 2301-7287 / 2580-9636
Published by: Faculty of Law Pattimura University (10.30598)
Total articles ≅ 153
Latest articles in this journal
Agrologia, Volume 11, pp 34-44; https://doi.org/10.30598/ajibt.v11i1.1540
Healthy seeds are needed to support the food crops growth and yield. This study was aimed to 1. identify the types of pathogenic fungi on rice seeds in Waeapo District, Buru Regency; 2. Asses the fungal pathogen effect on the growth of rice cv Ciherang seedings; and 3. determine the ability of Trichodema harzianum to control those fungus and its effect on the germination of rice. The research consisted of foure stages, namely 1. Isolation and identification of the bottom pathogenic fungi of rice seeds; 2. Pathogenicity test of the pathogens; 3. Antagonistic test of T.harzianum against pathogens in vitro, and 4. Bioassay of T. harzianum inoculation to pathogen-infected rice seeds. The research found that pathogenic fungi isolated from rice seeds from breeders in Waeapo District were Mucor sp., Sclerotium sp., Aspergillus sp., Rhyzoctonia sp., and Drechslera sp., which cause the rice seeds damage of 13.33 %, 10.37%, 11.85%, 11.11%, and 12.59% respectively. In vitro assay verified that T. harzianum was able to suppress the development of pathogens Mucor sp., Sclerotium sp., Aspergillus sp, Rhyzoctonia sp., and Drechslera sp. up to 46.99%, 67.48%, 55.83%, 55.42%, and 31, respectively. 60%. The inoculation of T. harzianum to infected rice seeds, reduced the rice damage by Mucor sp, Sclerotium sp, Aspergillus sp, Rhyzoctonia sp, and Drechslera sp, up to 79.14%, 18.72%, 17.97%, 18, respectively. 71% and 61.40% respectively.
Agrologia, Volume 11, pp 59-66; https://doi.org/10.30598/ajibt.v11i1.1543
The objective of the research was to find the effective traps fro trapping the imago of Spodoptera exigua Hbn. The research was conducted in Dusun Taeno Atas, Rumah Tiga Village, Teluk Ambon District, Central Maluku Regency, from September to December 2020. The study used shallot seeds cv. bauji. The treatments used were exi pheromone trap (PF), yellow trap + exi pheromone (PKF) and yellow trap (PK). The control treatment was without pheromone. The study used a completely randomized design (CRD) with three replications. The results showed that pheromone traps were the most effective for trapping Spodoptera exigua Hbn pests.
Agrologia, Volume 11, pp 67-80; https://doi.org/10.30598/ajibt.v11i1.1544
The decline of mustard (Brassica juncea L.) production can indicate a plant nutrition problem. The purpose of this pot experiment was to determine the response of green mustard to the application of NPK and Chitosan fertilizers which were applied at the same time. The experimental design completely randomized design with three replications and two factors, namely NPK fertilizer with five levels of dosage, namely 0.0 g/plant, 0.4 g/plant, 0.8 g/plant, 1.2 g/plant, and 1.6 g/plant, and Chitosan with four levels of concentration, namely: 0%, 10%, 20% and 30%. Observed variables were plant height, number of leaves, average leaf area, total leaf area, root length, root fresh weight, stem diameter, and plant fresh weight. The results of the study found that the use of NPK and Chitosan fertilizers increased plant growth indicated by plant height, number of leaves, leaf area and root length, as well as plant yield indicated by plant fresh weight. There was no interaction effect between the two treatments but independently both treatments have a positive effect on growth and yield of green mustard. The higher the dose of NPK fertilizer and the concentration of chitosan will increase the effect. The best treatment composition recommended for green mustard cultivation was NPK fertilizer with a dose of 1.6 g/plant and chitosan with a concentration of 20%.
Agrologia, Volume 11, pp 45-50; https://doi.org/10.30598/ajibt.v11i1.1541
Research on the limiting factors for forest cloves (Syzygium obtusifolium, L.) productivity has been conducted in Latu and Hualoy villages, Amalatu sub-district, West Seram Regency. The results showed that the dominant soil factors that limit the productivity of forest cloves were root growth media condition and erosion hazard. However, there was no appropriate technologies to improve all of limiting factors. Actual and potential land suitability for forest clove was categorized as Marginally Suitable covering an area of 1403.1 Ha (61.2 %) and Not Suitable covering an area of 787.9 Ha (34.3%) without the settlements and roads area. The productivity of forest cloves is still low, ranging from 2,250 kg – 3,750 kg/ha/year.
Agrologia, Volume 11, pp 12-20; https://doi.org/10.30598/ajibt.v11i1.1538
Groundwater availability in small islands with limestone is generally low. In order determine the availability and quality of groundwater, geoelectrical measurements were carried out with the Schlumberger electrode configuration on two tracks of Dulah Laut 1 and Dulah Laut 2. The results showed that the rock resistivity in Dulah Laut Village ranged from 27.4 – 1561 Ωm. Groundwater at the Dulah Laut 1 and Dulah Laut 2 were found at a depth of 5.21 m and 7.93 m below ground surface, respectively. The groundwater potential zone with resistivity of less than 150 Ωm was found at a depth of 4 m below the surface. Groundwater quality was classified as moderately polluted with high salinity.
Agrologia, Volume 11, pp 1-11; https://doi.org/10.30598/ajibt.v11i1.1537
Nutrition is an important factor for pakcoy cultivation in a hydroponic system so that the growth media should contain appropriate concentration of micro- and macronutrient to support plant growth. This study has been done to determine the different effect of the different liquid organic fertilizer type and concentration compared to AB Mix fertilizer on the growth and yield of pakcoy grown with the Hydroponic System. The experiment was conducted by using completely randomized design consisting of 9 combination treatments of type and concentration of liquid fertilizer. The treatments were AB Mix Fertilizer with a concentration of 10 ml/l, 12 ml/l, 14 ml/l; Meroke Liquid Fertilizer with a concentration of 16 ml/l, 18 ml/l, 20 ml/l; and Nasa Liquid Organic Fertilizer with a concentration of 5 ml/l, 10 ml/l, 15 ml/l. The results showed that the application of 20 ml/l of Meroke liquid fertilizer significantly increased plant height, number of leaves, leaf area, plant fresh weight, and plant dry weight compared to another treatments. However it did not affect root length.
Agrologia, Volume 11, pp 21-33; https://doi.org/10.30598/ajibt.v11i1.1539
Ecologically, sago palms can grow, develop and produce on marginal land where other plants are difficult to grow. The research was conducted in a sago forest in Tawiri Village, Teluk Ambon District, Ambon City, Maluku Province. The purpose of the study was to map the density level of sago forest in Tawiri Village at 2016 based on the transformation of the vegetation index on the Landsat imagery. The method used in the research was Normalized Difference Vegetation Index(NDVI) transformation Landsat-7 ETM+. The results showed that there were three levels of sago forest density: a medium density level of 13.3%, a low density of 3.4%, and a high density of 1.6% of the research area. In the study area, non-sago area covered 81% of the research area. The accuracy of the sago forest density analysis at 2016 was 92%, which means there was a similarity between the image classification and the actual situation in the field.
Agrologia, Volume 11, pp 81-88; https://doi.org/10.30598/ajibt.v11i1.1545
NaCl stress is one of the causes of inhibition and decreased growth of rice plants. The aim of the study was to obtain indicators of tolerance analysis and to analyze the tolerance of rice varieties Inpari-22 and mekongga to NaCl stress. The research was carried out at the Laboratory of Botany and Plant Physiology, Faculty of Agriculture, University of IBA in Palembang, in October-December 2021.The study used a completely randomized factorial design (RALF) 5 x 2. The first factor was the concentration of NaCl, which consisted of 0ppm (water), 2.500ppm, 5.000ppm, 7.500ppm and 10.000ppm. The second factor is rice varieties, namely Inpari-22 and Mekongga. The experiment consisted of 10 treatment combinations with 3 replications. Each experimental unit consisted of 50 seeds, so a total of 1,500 seeds. The results showed that soaking the seeds in a NaCl solution of 2,500-10,000 ppm for 48 hours could increase germination, vigor index, growth speed, growth synchronously and maximum growth potential. However, in subsequent growth there was inhibition and a decrease in plant height, root length, epicotyl length, plant weight and root weight at increasing NaCl concentration from 2,500 ppm -10,000 ppm. In this study, as an indicator of the analysis of seed tolerance to salinity stress, the observations of germination variables (germination, vigor index, growth speed, growth synchronously and maximum growth potential) and early growth half (plant height, number of leaves, root length, epicotyl length, plant weight and root weight) can be used.
Agrologia, Volume 11, pp 51-58; https://doi.org/10.30598/ajibt.v11i1.1542
The research was conducted in the villages of Eri, Soya, Kusu-kusu, Waai, Hatu, and Allang of Ambon Island. The aim of this study was to determine the external and internal characteristics of the location for growing Tongka Langit banana (M.roglodytarum L). The method used was a survey method with a free survey observation distance. The results showed that the characteristics of the external land where the Tongka Langit banana plant grows are scattered on the slopes of the foothills with the geology of alluvium, limestone, coral, granite, and loose material. Banana cultivation was associated with mixed garden land use with dominant slopes ranging from flat to gentle (2 - 9%). The research location has a dew point of 24.5 oC - 26.5 oC, humidity 75% - 91%. The internal soil characteristics are as follows: Soil textured slightly coarse to slightly fine, soil reaction was between 6.15 – 7.49, C-organic content was 0.69 - 10.08%, total N content was 0.10 - 0.59 %, C/N ranged from 5-59, P2O5 content was 11-18 ppm, K2O content ranged from 212-295 ppm, and cation exchange capacity was 6.52-24.48 me/100gr.
Agrologia, Volume 10; https://doi.org/10.30598/ajibt.v10i2.1424
This study aims to determine the species composition, frequency, density, dominance, important value index (INP) and the distribution of tree species. The method used in this research is the Line Transect Plot Method. The total area of the sample plots is 1 ha (10.000 m2) with a total of 25 sample plots, which are placed purposively at the study site. Observational data were analyzed according to the parameters and described qualitatively and quantitatively and presented in the form of tabulations and pictures. The composition of vegetation types in the Sorong Nature Tourism Park forest contains 50 plant species, namely 30 known families and 3 plant species not yet traded, scientific and family names. The number of tree levels is 36 species with the largest density value (K) for resak (Vatica papuana) and guava (Syzygium, sp ) which is 29.81/ha with a Relative Density (KR) of 15.897% with the smallest density value (K). 0.962/ha, and the value of relative density (KR) was 0.5128%, respectively. The largest frequency (F) value is found in guava with a value of 0.731, relative frequency (FR) of 13.19%, and the lowest value of frequency (F) is 0.038 %, the smallest relative frequency (FR) is 0.694%. With the largest dominance value (C) in resak plants of 2,561 and relative dominance of 15.95%, while the lowest dominance was 0.033 and relative dominance was 0.208%. Where the highest Importance Value Index (INP) is on the guava tree at 43.117 and the lowest Important Value Index (INP) is in the Trichadenia tree, sp 1.3964. The distribution pattern at the tree level is based on the morista index, which is spread in groups or in clusters.Keywords: Composition, Vegetation, Nature Park