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All Journal AGRIVITA, Journal of Agricultural Science Emerging Science Journal
Toonsiri, Phasita
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Agriculture, Biological Sciences & Forestry Environmental Science

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Effect of One-Time Application of Biochar and Compost on Soil and Maize During 5-Time Consecutive Periods of Crop Cultivation Wijitkosum, Saowanee; Sriburi, Thavivongse; Toonsiri, Phasita
Emerging Science Journal Vol 9, No 1 (2025): February
Publisher : Ital Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/ESJ-2025-09-01-07

Abstract

This study evaluates the impact of a single-time biochar application during initial cultivation on the performance of five consecutive crop cycles. The research compares the effects of biochar alone versus biochar combined with soybean compost on maize yield and soil properties over a period of 2.8 years. Fundamental soil properties—including pH, cation exchange capacity, organic matter content, and macronutrient levels—were assessed before each planting cycle and at the end of the fifth cycle. Maize yield and productivity were evaluated based on the number of maize ears, kernel biomass, and both fresh and dry kernel weights. Five experimental plots, each with four replicates, were established with the following treatments: compost applied at 0.56 kg/sq m (TM), cassava stem (CS) biochar applied alone at 2.5 kg/sq m (TB2.5) and 3.0 kg/sq m (TB3.0), and combinations of compost at 0.56 kg/sq m with CS biochar at 2.5 kg/sq m (TMB2.5) and 3.0 kg/sq m (TMB3.0). Results indicated that the sole application of biochar and its combination with compost positively affected soil properties and maize yield. Biochar applications alone significantly improved soil nutrient levels and maize yields compared to the compost alone. Notably, the beneficial effects of biochar on maize and soil were observed from the first cultivation and persisted throughout all five cycles. Based on these findings, it is recommended to apply biochar at 3.0 kg/sq m, in combination with compost at 0.56 kg/sq m, every three crop cycles to sustain nutrient levels and enhance maize yields effectively. Doi: 10.28991/ESJ-2025-09-01-07 Full Text: PDF
Timing of Chicken Manure Application in Vegetable Soybean Production Toonsiri, Phasita; Paladet, Chutima; Ngahwut, Yanawut; Khin, Sophary; Thongplew, Natapol; Jiaphasu-anan, Tassanee
AGRIVITA Journal of Agricultural Science Vol 48, No 3 (2026): October 2026
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v48i3.4930

Abstract

Sustainable Development Goals (SDGs) emphasize the importance of sustainable agricultural practices. Enhancing the potential of lowfertility soils through eco-friendly practices is essential for increasing agricultural productivity and fulfilling SDGs. This study evaluated the effects of different timings of chicken manure application on the growth and yield of Chiang Mai 84-2 vegetable soybean (Glycine max L.) in low-fertility soils. Adopting a pot experiment, this research was carried out following a randomized complete block design with four replications and five treatments: 1) control (no fertilizer applied), 2) chicken manure and chemical fertilizer application as recommended by the Department of Agriculture in Thailand, 3) 100% chicken manure at the recommended nitrogen rate with a single application, 4) 100% chicken manure at the recommended nitrogen rate split into two applications, and 5) 100% chicken manure at the recommended nitrogen rate split into three applications. The results showed that Treatment 5 had the highest economic yield (724.5 kg/ha), but there was no significant difference compared to Treatment 2 (657.3 kg/ha). Therefore, utilizing split chicken manure fertilization provides economic benefits by reducing the use of chemical fertilizers and enhancing soybean yield in low-fertility soils. Additionally, it offers environmental advantages by recycling waste and minimizing nitrogen loss.
Co-Authors Jiaphasu-anan, Tassanee Khin, Sophary Ngahwut, Yanawut Paladet, Chutima Sriburi, Thavivongse Thongplew, Natapol Wijitkosum, Saowanee