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All Journal Asian Journal of Agriculture Biodiversitas Journal of Biological Diversity
NOVI ARFARITA
Department of Agrotechnology, Faculty of Agriculture, Universitas Islam Malang. Jl. Mayjen Haryono No. 193, Malang 65144, East Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Soil respiration and microbial communities across different farming management of shaded coffee and pines on agroforestry system CAHYO PRAYOGO; NOVI ARFARITA; FITRIANA LUTHFININGSIH; NURULITA FAJRINA; NAYLIL AULA SHOLIH
Biodiversitas Journal of Biological Diversity Vol. 27 No. 2 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270205

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Abstract. Prayogo C, Arfarita N, Luthfiningsih F, Fajrina N, Sholih NA. 2026. Soil respiration and microbial communities across different farming management of shaded coffee and pines on agroforestry system. Biodiversitas 27 (2): d270205. https://doi.org/10.13057/biodiv/d270205. Small-scale shaded coffee and pine agroforestry has been recognized to have some advantages in ecological but it is vulnerable to climate change and yields sustainability. This study aimed to examine the impact of contrasting farmer management on soil properties, microbial respiration, and microbial structure and activities. The design of the experiment was a nested Randomized Complete Block Design (RCBD) of four contrasting farming management systems (LC, MC, HC, and BAU plots), consisted of three blocks of different position of sampling (zona A: 0.5 cm from coffee, B: 0.5 cm from pine, and C: in between coffee and pine stand, treated as nested sample), was within the size of 20 x 20 m, with 3 replicates in separate blocks, resulting 36 plots in total. Variables were measured: (soil C, N, C/N ratio, MBC, total/functional bacteria, respiration, coffee and pine litter, tree population, coffee production, and litter input). Data were analyzed using ANOVA, followed by DMRT (5%), and multivariate PCA, which were employed to group the treatments based on selected variables. The results showed that the HC plot, with the highest coffee population, produced the highest canopy cover, litter input, and the lowest soil pH, but it provided the largest total bacterial population and greatest soil respiration and MBC, which was significantly different from other plots. The least pine population at BAU plots increases soil C and N, contains 2 x higher N-fixing bacteria than treatment, and produces the greatest coffee yields. PCA revealed that there was a strong relationship between soil respiration and total soil bacteria population, soil MBC, soil C/N ratio and pine litter, significantly separating the different farmer management.
Development of VP3-biofertilizer pellets from seaweed waste and its implications for bacterial-fungal viability and solanaceous seedling performance NOVI ARFARITA; ANITA QUR’ANIA; SHINGO NAKAMURA; TSUYOSHI IMAI
Asian Journal of Agriculture Vol. 10 No. 2 (2026)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g100222

Abstract

Abstract. Arfarita N, Qur’ania A, Nakamura S, Imai T. 2026. Development of VP3-biofertilizer pellets from seaweed waste and its implications for bacterial-fungal viability and solanaceous seedling performance. Asian J Agric 10 (2): g100222. https://doi.org/10.13057/asianjagric/g100222. The development of stable and effective biofertilizer formulations remains a major challenge in sustainable agriculture, particularly in maintaining microbial viability during storage while ensuring agronomic benefits after application. This study developed a pelletized biofertilizer based on seaweed waste and evaluated its ability to preserve beneficial microorganisms and promote the early growth of solanaceous crops. The formulation combined the VP3 bacterial consortium, consisting of nitrogen-fixing Bacillus licheniformis, phosphate-solubilizing Pantoea ananatis, and exopolysaccharide-producing Pseudomonas plecoglossicida, with the beneficial fungus Trichoderma viride FRP3. Different drying temperatures (40°C and 50°C) and packaging methods were investigated to determine their effects on the viability of the microbial agents contained in the pellets. Pellets dried at 40°C maintained higher bacterial viability than those dried at 50°C. After 30 days of storage, pellets dried at 40°C with non-vacuum packaging showed a bacterial viability of 3.8 × 10⁹ CFU/g (V3T1), compared with 1.8 × 10⁹ CFU/g under vacuum packaging (V4T1). After 30 days of storage, fungal viability reached 1.5 × 10⁷ CFU/g in pellets dried at 40°C with non-vacuum packaging (V3T1), compared with 1.3 × 10⁷ CFU/g under vacuum packaging (V4T1). After 30 days of storage, pellets dried at 40°C maintained the highest bacterial viability (6.9 × 10⁹ CFU/g). The packaging method did not significantly affect microbial viability, although non-vacuum packaging showed a tendency toward higher bacterial and fungal counts than vacuum packaging. In addition, the biofertilizer was applied to chili pepper, eggplant, and tomato seedlings to assess its influence on seedling performance. Application of the seaweed waste-based VP3 pellets significantly enhanced seedling height, fresh biomass, and root development in most tested crops compared with the control, although no significant effect was observed on tomato root length. These findings demonstrate the potential of seaweed waste-based biofertilizer pellets to maintain microbial viability during short-term storage and promote early seedling growth under nursery conditions.
Co-Authors ANITA QUR’ANIA CAHYO PRAYOGO FITRIANA LUTHFININGSIH NAYLIL AULA SHOLIH NURULITA FAJRINA SHINGO NAKAMURA TSUYOSHI IMAI