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Abstract

This study evaluated the effects of potassium humate and chicken manure on soil properties, growth, yield, and quality of the green-seeded black bean variety PN030 cultivated on sandy soil. The experiment was arranged in a randomized complete block design (RCBD) with two factors: three levels of chicken manure (0, 1, and 2 tons/ha) and three levels of potassium humate (0, 4, and 8 kg/ha), with each treatment replicated three times. The results indicated that the application of potassium humate and chicken manure significantly improved soil fertility, as evidenced by increased pH, available nitrogen, and phosphorus content. Additionally, physiological - biochemical parameters such as the photosynthetic index (SPAD), relative water content (RWC), and membrane stability index (MSI) were enhanced, while ion leakage was reduced. The combination of 8 kg/ha potassium humate and 2 tons/ha chicken manure resulted in the highest theoretical yield (366,97 kg/1.000 m2) and actual yield (286,67 kg/1.000 m2), while also improving seed quality with a protein content of 25.35% and fiber content of 3.83%. The findings confirm the potential of using potassium humate and chicken manure in green-seeded black bean cultivation on sandy soil to improve soil nutrition enhance yield and product quality.

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How to Cite
Le Vinh Thuc, Nguyen Vu Xuan Mai, & Tat Anh Thu. (2025). Effects of potassium humate and chicken manure rates on soil nutrient properties, physiological - biochemical, yield, and quality of green-seeded black bean variety pn030 (Vigna unguiculata subsp. cylindrica (L.) Verdc). E-Journal of Agricultural Science and Technology, 9(2), 4787–4797. https://doi.org/10.46826/huaf-jasat.v9n2y2025.1226
Section
PLANTS

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