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Asian Journal of Agriculture
Published by Universitas Mulawarman
ISSN : -     EISSN : 25804537     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Aims and Scope Asian Journal of Agriculture encourages submission of manuscripts dealing with all aspects to optimizing the quality and quantity of both plant and animal yield and final products, including agricultural economics and management, agricultural engineering and mechanization, agronomy and crop science, fish breeding, poultry breeding, plants and animals breeding, biotechnology, molecular biology, genetic diversity and breeding, food science and technology, land resources, land use, and remote sensing, plant pathology and pest management, microbiology, virology and bacteriology, organic agriculture, ecology and ecophysiology, physiology and nutrition, post-harvest technology, soil sciences, soilless culture, tissue culture technology, phytoremediation, and water management.
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Articles 5 Documents
 1 
Search results for , issue " Vol 3 No 01 (2019)" : 5 Documents clear
Review: Rice momilactones, potential allelochemical for weeds suppression ESTIATI, AMY
Asian Journal of Agriculture Vol 3 No 01 (2019)
Publisher : Society for Indonesian Biodiversity & Universitas Mulawarman, Samarinda, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g03102

Abstract

Abstract. Estiati A. 2019. Rice momilactones, potential allelochemical for weeds suppression. Asian J Agric 3: 6-15. Weeds become one of the important biological constraint declining the productivity and quality of rice. Among the weeds, barnyardgrass is reported as the most destructive weed species. Synthetic herbicides are preferred method to control weeds. However, the excessive and continuous use of synthetic herbicides can have a negative impact on the environment, health and even the emergence of herbicide-tolerant weeds. Therefore, another alternative to overcome weed problems become the concern of scientists. Rice plants have been proven to be able to suppress the growth of weeds nearby by secreting secondary metabolites called allelochemicals. In this article, the achievements of research on rice allelochemicals at laboratory level will be reported. Among rice allelochemicals, momilactones are potential growth inhibitor. The biosynthetic pathway of momilactones and its coressponding genes have been extensively investigated in rice. OsCPS4, OsKSL4, CYP99A2, CYP99A3 and OsMAS are genes that co-regulated in momilactones biosynthetic pathway and production, and they form a gene cluster which is located on chromosome 4. Reverse genetic approach by inserting genes knock-out of OsCPS4 and OsKSL4 into two rice cultivars from Japonica subspecies showed that insertional mutant lines harboring cps4 or ksl4 exhibited a significant loss in inhibition potential due to the lack of momilactones production.
Various antioxidant assays of agarwood extracts (Gyrinops versteegii) from West Lombok, West Nusa Tenggara, Indonesia PRIHANTINI, AMALIA INDAH; RIZQIANI, KANTI DEWI
Asian Journal of Agriculture Vol 3 No 01 (2019)
Publisher : Society for Indonesian Biodiversity & Universitas Mulawarman, Samarinda, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g03101

Abstract

Abstract. Prihantini AI, Rizqiani K. 2019. Various antioxidant assays of agarwood extracts (Gyrinops versteegii) from West Lombok, West Nusa Tenggara, Indonesia. Asian J Agric 3: 1-5. However, the species have not been widely explored as a source of natural products in particular antioxidant agents, which protect cells from damage caused by free radicals. The present study was aimed to evaluate antioxidant activities of agarwood extracts from West Nusa Tenggara using various antioxidant assays. The antioxidant activity of leaf, fruit and fruit bark extracts were investigated based on DPPH radicals scavenging activity, reducing power, and β-carotene bleaching assays. The total phenolic content was also investigated. The result showed that leaf extract revealed the strongest antioxidant activity on all assays performed such as DPPH radicals scavenging activity (IC50 22.13±0.71 μg/mL); reducing power (251.85±0.03 mg QE/g dry extract); and β-carotene bleaching activity (IC50 24.23±2.60 μg/mL). The total phenolic content (TPC) in the leaf was higher (184.90±0.76 mg GAE/g dry extract) than fruit bark and bark extracts. The high content of phenolic compounds in G. versteegii leaves indicated that these compounds might contribute to the antioxidant activities. In conclusion, these findings showed that G. versteegii leaves are potential for development as an antioxidant source.
The feasibility and farmer perception of true shallot seed technology in Sigi District, Central Sulawesi, Indonesia RAHAYU, HENI SP; MUCHTAR, MUCHTAR; SAIDAH, SAIDAH
Asian Journal of Agriculture Vol 3 No 01 (2019)
Publisher : Society for Indonesian Biodiversity & Universitas Mulawarman, Samarinda, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g03103

Abstract

Abstract. Rahayu HSP, Muchtar, Saidah. 2019. The feasibility and farmer perception of true shallot seed technology in Sigi District, Central Sulawesi, Indonesia. Asian J Agric 3: 16-21. Shallot is one of horticultural commodities that plays a significant role in both national and regional economy. A fluctuating supply of shallot influences the inflation level. Shallot production is currently still facing many problems, including high production cost. The high shallot production cost mostly goes to expenses for labor and seed while Indonesian shallot is mainly produced from the bulbs seed. This high-cost production causes a lower shallot competitiveness. Therefore, introduction of True Shallot Seed (TSS) technology, which lowers the cost for shallot seed, could be an ideal option to improve the shallot competitiveness in Indonesia. However, the shallot farming feasibility and the farmer’s perception of this technology are two critical aspects that need to be considered in the adoption of this new technology. This research aimed to study the potency of true shallot seed development in Central Sulawesi based on the TSS’s farming feasibility and farmer perception on TSS. The research was conducted in Sigi District, Central Sulawesi. The results showed that the farming of shallot using TSS was feasible, and within 14.9 t.ha-1 productivity, the Revenue-Cost Ratio was 3.15 while the Benefit-Cost Ratio was 2.15. The perception was examined based on three aspects namely technical, economic, and social aspects. The results showed that farmers were interested in planting true seed of shallot based on its high productivity, lower production cost, and market acceptance of the product; while in the social aspect, the extension and farmer group’s support still need to be improved for development of TSS.
Effect of container and potting media on raising quality seedlings of Acacia auriculiformis in the nursery ISLAM, MD. ARIFUL; RAHMAN, RAYHANUR; HOSSAIN, MOHAMMED KAMAL
Asian Journal of Agriculture Vol 3 No 01 (2019)
Publisher : Society for Indonesian Biodiversity & Universitas Mulawarman, Samarinda, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g030105

Abstract

Abstract. Islam MDA, Rahman MDA, Hossain MK. 2019. Effect of container and potting media on raising quality seedlings of Acacia auriculiformis in the nursery. Asian J Agric 3: 26-32. The study elucidates the effect of container and potting media on raising quality seedlings of Acacia auriculiformis in the nursery of the Institute of Forestry and Environmental Sciences, University of Chittagong to find out a suitable container and potting media for raising large scale quality seedlings. The seedlings were evaluated by five container and seven potting media treatments for eight months. A Completely Randomized Block Design (CRBD) was adopted for the study with three replications for each treatment. The Analysis of variance (ANOVA) and Duncan’s Multiple Range Test (DMRT) was tested for the analysis to explore the possible treatment variations. However, the study reveals nodulation with growth parameters; shoot and root dry biomass production and quality index were highest in 20 cm × 15 cm size polybags whereas the highest root length and shoot-root ratio was observed in 15 cm × 10 cm and 15 cm × 13 cm size polybag respectively. Considering the potting media, highest nodulation, growth parameters, shoot dry and fresh weight, shoot- root ratio and biomass were found in combination of soil + cow dung + phosphorus (0.16 g/polybag). Highest root length, root fresh and dry weight, and quality index were found in the combination of soil + cow dung (3:1). Therefore, it is recommended that containers of 20 cm × 15 cm size polybag and with a potting media of soil + cow dung + phosphorus (3 parts soil, 1 parts cow dung + 0.16 g/polybag) combination produce quality A. auriculiformis seedlings in the nursery.
Effect of inoculation of two Aztobacter and nitrogen fertilizer on of peppermint (Mentha piperita) essential oil BIDGOLI, REZA DEHGHANI
Asian Journal of Agriculture Vol 3 No 01 (2019)
Publisher : Society for Indonesian Biodiversity & Universitas Mulawarman, Samarinda, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g030104

Abstract

Abstract. Bidgoli RD. 2019. Effect of inoculation of two Aztobacter and nitrogen fertilizer on of peppermint (Mentha piperita) essential oil. Asian J Agric 3: 22-25. This study was conducted to study changes of percentage and yield of essential oil of peppermint (Mentha piperita) as a split factorial in a randomized complete block design (RCBD) with three replications in 2016-2017. The experimental treatments were nitrogen at four levels 0, 50, 100 and 150 kg/ha as the main factor and two strains of PGPR (Aztobacter chroococcum MZ11, MZ26) in two state of (use and non-use) was considered as sub factors. Results showed that use of these two of A. chroococcum strains has led to increase in the percentage and yield of peppermint essential oil more than all Nitrogen fertilizer treatments. Also, the highest peppermint essential oil percentage (0.73%) obtained the in the of triple interaction of Nitrogen (100 kg/ha) A. chroococcum MZ11 and A. chroococcum MZ26 The highest essential oil yield (91.65 kg/ha)observed under the influence of the triple interaction of Nitrogen (100 kg/ha) , A. chroococcum MZ11 and A. chroococcum MZ26.

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