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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 57 Documents
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Search results for , issue "Vol. 9 No. 2 (2025)" : 57 Documents clear
Shifting cultivation and soil conservation strategies among Papuan communities, Indonesia MAHMUD, MAHMUD; ENDAYANI, SRI; STEFANO, ANDREW; LAKEHU, AMALIA; MUTAKIM, MUTAKIM; WAHYUDI, WAHYUDI; HUSODO, SUSILO BUDI; MOELJONO, SOETJIPTO
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090235

Abstract

Abstract. Mahmud, Endayani S, Stefano A, Lakehu A, Mutakim, Wahyudi, Husodo SB, Moeljono S. 2025. Shifting cultivation and soil conservation strategies among Papuan communities, Indonesia. Asian J Agric 9: 671-682. Local Papuan communities in Indonesia, rely heavily on land resources for food security, yet shifting cultivation remains the dominant practice. This system, while traditional, often leads to soil nutrient depletion, reduced productivity, and increased deforestation. To understand the dynamics of local farming practices, this study applied interviews, surveys, and participatory approaches with farmers and community members. Findings reveal that short-term crops such as long beans, peanuts, cabbage, chilies, and sweet potatoes dominate cultivation, contributing to rapid soil fertility loss. In contrast, perennial crops such as Areca catechu, Musa paradisiaca, Nephelium lappaceum, and Artocarpus altilis are typically maintained in fixed plots without being shifted. To address soil degradation, the study proposes several conservation strategies. These include mulching to retain soil moisture, living fences and cover crops to minimize erosion, intercropping to diversify yields and improve nutrient cycling, and the integration of Multipurpose Tree Species (MPTS) and hedgerows to restore long-term soil fertility. Collectively, these measures can reduce the necessity for continuous land clearing and help communities move toward more sustainable sedentary agricultural systems. Beyond technical solutions, the research highlights the importance of strengthening community awareness about forest and soil conservation. Transitioning away from shifting cultivation not only improves land productivity but also contributes to broader ecological resilience. By adopting integrated conservation practices, Papuan farmers can secure food production, maintain forest ecosystems, and develop more sustainable livelihoods in harmony with their environment.
Genetic diversity and relationships among native Dendrobium species from Bali, Indonesia, using SSR markers DARMAWATI, IDA AYU PUTRI; DWIYANI, RINDANG; PRADNYAWATHI, NI LUH MADE; FITRIANI, YUYUN; LISTIHANI, LISTIHANI; KAMUHI, RINI HERMINA
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090200

Abstract

Abstract. Darmawati IAP, Dwiyani R, Pradnyawathi NLM, Fitriani Y, Listihani L, Kamuhi RH. 2025. Genetic diversity and relationships among native Dendrobium species from Bali, Indonesia, using SSR markers. Asian J Agric 9: 917-924. Bali, Indonesia, has significant potential for the development of orchid cultivation, particularly through the production of hybrids that meet market preferences. Among various orchid genera, Dendrobium holds major economic and horticultural importance due to its wide adaptability, aesthetic value, and high demand in both domestic and international markets. Wild Dendrobium species represent an invaluable source of germplasm that can be used for interspecific hybridization and the development of new cultivars with desirable characteristics such as flower color, shape, and durability. However, the lack of information on the genetic diversity of native Dendrobium species in Bali limits their effective use in breeding and conservation programs. This study aimed to evaluate the genetic diversity and relationships among 24 native Dendrobium species collected from 12 forest areas across Bali using Simple Sequence Repeat (SSR) markers. The molecular analysis revealed high genetic variation, with 86.21 percent of loci showing polymorphism and moderate heterozygosity across populations. Genetic similarity coefficients among species ranged from 0.66 to 0.97. The highest genetic similarity was observed between Dendrobium sp. Wanagiri and Dendrobium sp. Sepang, while D. fimbriatum was identified as the most genetically distinct species. These findings demonstrate a broad genetic base among Bali’s native Dendrobium species, indicating their strong potential as parental resources in hybrid breeding programs. The study also provides valuable molecular data that support the conservation and sustainable utilization of Bali’s native orchid germplasm for future cultivation and breeding initiatives.
Dietary lotus seed powder enhances semen quality and storage stability in Mia roosters NHAN, PHAN; TRI, NGUYEN MINH
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090226

Abstract

Abstract. Nhan P, Tri NM. 2025. Dietary lotus seed powder enhances semen quality and storage stability in Mia roosters. Asian J Agric 9: 598-606. Semen quality, a key determinant of reproductive efficiency in poultry, plays a crucial role in breeding programs and in the conservation of indigenous genetic resources. Natural dietary supplements with antioxidant activity may improve sperm function and preservation. Lotus seed powder (Nelumbinis semen) is rich in bioactive compounds with antioxidant and membrane-stabilizing properties, but its effects on avian reproduction remain unexplored. This study represents the first report in avian species evaluating the impact of dietary lotus seed powder supplementation on semen quality and storage stability in Mia roosters, a Vietnamese indigenous breed. Thirty healthy roosters (10-11 months) were fed either a control diet or diets supplemented with 2% or 4% lotus seed powder for 60 days. Semen was collected every three days and assessed for volume, concentration, motility parameters, morphology, viability, membrane integrity, and chilled storage stability (0-24 h at 4°C). Compared with the control (C), T2 showed higher semen volume (0.48±0.05 mL vs 0.42±0.05 mL), sperm concentration (3.47±0.27×109/mL vs 3.21±0.26×109/mL), VSL (46.25±3.15 µm/s vs 42.35±3.12 µm/s), and viability (91.03±2.68% vs 87.46±2.85%). Abnormal morphology decreased from 9.84±1.21% in C to 8.15±1.12% in T2. Motility after 24 h storage remained higher in T2 (63.20±4.15%) compared with C (51.81±4.91%). Dietary lotus seed powder, particularly at 4% inclusion, significantly improves semen quality by enhancing sperm motility, viability, and membrane integrity, while also prolonging chilled storage stability in Mia roosters. These outcomes underscore its potential as a natural reproductive enhancer with applications in Artificial Insemination (AI) and the conservation of indigenous poultry genetic resources.
Soil acidification and nutrient imbalance under intensive black pepper plantations in the Central Highlands of Vietnam LONG, NGUYEN VAN; DO, NGUYEN; ANH, NGUYEN THI VAN; HANH, DINH THI NGOC; CUONG, VO CHI; NGOC, NGUYEN QUANG; VAN, NGUYEN THI CAM
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090200

Abstract

Abstract. Long NV, Do N, Anh NTV, Hanh DTN, Cuong VC, Ngoc NQ, Van NTC. 2025. Soil acidification and nutrient imbalance under intensive black pepper plantations in the Central Highlands of Vietnam. Asian J Agric 9: 906-916. Black pepper, Vietnam's most valuable spice crop, is concentrated in the Central Highlands, where it plays a significant role in global supply, yet its long-term productivity is increasingly constrained by soil degradation. However, production is increasingly threatened by soil degradation and rising disease pressure. To evaluate substantial constraints, the soil fertility in 150 intensive black pepper plantations across Dak Lak, Dak Nong, and Gia Lai was assessed based on key physicochemical properties. Results revealed three critical constraints: (i) strong to very strong soil acidification (pH 3.55-6.40), (ii) low Cation Exchange Capacity (CEC 2.50-14.50 Cmolc kg-¹), and (iii) pronounced nutrient imbalances. Excessive phosphorus occurred in 82% of samples, while potassium deficiency affected up to 57.6% of plantations, with calcium and magnesium ratios varying substantially among provinces. Organic matter levels were generally adequate but unevenly distributed. Correlation and principal component analyses highlighted soil pH and organic matter as the primary regulators of nutrient availability. Notably, Dak Lak exhibited the strongest acidity and lowest CEC, Dak Nong showed more balanced fertility with higher CEC, and Gia Lai displayed higher nutrient levels but greater variability among farms. These constraints collectively reduce nutrient efficiency, weaken crop resilience, and intensify vulnerability to soilborne diseases. Practical interventions should therefore prioritize correcting acidity, enhancing buffering capacity, and managing nutrients in a balanced manner to sustain productivity and safeguard soil health. The findings provide an essential evidence base for soil restoration and sustainable intensification of black pepper cultivation in Vietnam's Central Highlands.
Leveraging farmer federation to social capital and motivation enhancement for sustainable Ipomoea reptans farming in East Java, Indonesia SUSANTO, HERI; SYAHRIAL, RAMON; DIANTO, ANDRI KRISNA
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090253

Abstract

Abstract. Susanto H, Syahrial R, Dianto AK. 2025. Leveraging farmer federation to social capital and motivation enhancement for sustainable Ipomoea reptans farming in East Java, Indonesia. Asian J Agric 9: 870-880. This study examines the relationships between social capital, farmer motivation, and the mediating role of Farmer Group Federations (Gapoktan) in improving the productivity and sustainability of Ipomoea reptans farming in Balongpanggang, Indonesia. A mixed-methods design was employed using census data from 35 farmers and analyzed through Structural Equation Modeling Partial Least Squares (SEM PLS). The findings show that social capital has a positive and significant association with Gapoktan partnerships, while farmer motivation does not show a significant direct relationship. Gapoktan partnerships significantly improve agricultural productivity and the adoption of sustainable practices. Gapoktan also mediates the relationship between farmer motivation and productivity but does not mediate the relationships between motivation and sustainability or between social capital and either outcome. These results indicate that Gapoktan serves as an important institutional mechanism that converts collective farmer relationships into productive outcomes, with social capital emerging as a stronger predictor than individual motivation. Strengthening Gapoktan’s institutional capacity is therefore essential to optimize farmer networks, reinforce collective action, and promote sustainable agricultural development. The study highlights the need for institutional strengthening in rural farming systems to translate social assets into measurable gains in productivity and sustainability.
The influence of social media marketing on Generation Z’s buying behavior of livestock products BURHANUDDIN, AISYAH NUR MAHARANI; HASTANG, HASTANG; MUNIR, ABDUL RAZAK
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090256

Abstract

Abstract. Burhanuddin ANM, Hastang, Munir AR. 2025. The influence of social media marketing on Generation Z’s buying behavior of livestock products. Asian J Agric 9: 898-905. This study aims to analyze the effect of social media marketing on the purchasing decisions of Generation Z in Makassar City, South Sulawesi, Indonesia. The background of this study lies in the increasing use of social media as a primary source of information, interaction, and product evaluation among Generation Z, particularly in the context of e-commerce for processed broiler-based livestock products. The research was conducted in November 2024 using purposive sampling, targeting respondents aged 18-27 years who actively use social media and have purchased processed livestock products through online platforms. The questionnaire consisted of eight measurement items—four indicators of social media marketing and four indicators of purchase decision—evaluated using a five-point Likert scale. A descriptive and quantitative research approach was employed using the Partial Least Squares Structural Equation Modeling (PLS-SEM) method and processed with SmartPLS version 4 software. The measurement model demonstrated good reliability and validity, as reflected by Average Variance Extracted (AVE) values above 0.50, Composite Reliability exceeding 0.70, and a Standardized Root Mean Square Residual (SRMR) value within the acceptable threshold. The findings indicate that social media marketing has a positive and significant effect on purchase decisions, supported by the statistical results: an original sample (path coefficient) of 0.651, a t-statistic of 10.712—which exceeds the critical value of 1.96—and a p-value of 0.000. These results suggest that the more effective and engaging social media marketing activities are—such as informative content, consistent brand presentation, interactive communication, and accessible product information—the higher the likelihood that Generation Z consumers will purchase processed livestock products through e-commerce platforms. The study emphasizes the importance of strengthening digital marketing strategies for livestock-based SMEs and agribusiness actors seeking to compete in online food markets.
Harvest timing and cultivar effects on phenolics and volatiles in bergamot juice and essential oil GATTUSO, ANTONIO; MAFRICA, ROCCO; MAFRICA, DAVIDE; DE BRUNO, ALESSANDRA; POIANA, MARCO
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090200

Abstract

Abstract. Gattuso A, Mafrica R, Mafrica D, De Bruno A, Poiana M. 2025. Harvest timing and cultivar effects on phenolics and volatiles in bergamot juice and essential oil. Asian J Agric 9: 889-897. Bergamot (Citrus bergamia) is traditionally cultivated for essential oil production, but increasing interest in its health-promoting properties has enhanced the relevance of juice and derived products. However, the combined influence of harvest time and cultivar on the seasonal evolution of phenolic compounds in juice and volatile constituents in essential oil remains insufficiently defined. This study investigated these changes in the two main Protected Designation of Origin (PDO) cultivars, ‘Fantastico’ and ‘Femminello’. Fruits were collected monthly from November to June, and phenolic compounds in juice and volatile constituents of essential oil were analyzed in parallel using UHPLC-DAD and GC-FID, respectively. Significant differences were observed both between cultivars and across ripening stages. Phenolic compounds in bergamot juice increased progressively during the harvest season, with higher late-season accumulation in ‘Femminello,’ reflecting both enhanced biosynthesis and dilution-concentration effects associated with fruit growth. In essential oil, ripening was characterized by a marked decrease in monoterpene alcohols and a concomitant increase in acetate esters, indicating a seasonal shift that strongly influences aromatic quality. Early harvests yielded oils richer in linalool and fresher aromatic notes, whereas mid- to late-season harvests were associated with higher ester content and smoother, more persistent fragrance profiles. These findings provide the first integrated, month-by-month characterization of phenolic and volatile dynamics in the two main bergamot cultivars. By linking biochemical evolution to harvest timing, the results offer practical guidance for defining cultivar-specific harvest windows aimed at maximizing functional phytochemicals in juice and tailoring the aromatic profile of essential oil, thereby supporting improved decision-making in bergamot production and processing.

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