Soil Management and Peanut Intercropping for Plicatulum Grass Yield and Quality in Organic Farming Systems
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Abstract
Plicatulum grass is a high-potential forage crop. However, achieving high yield and quality requires appropriate soil management, particularly in organic agriculture that prioritizes soil amendment with organic matter. This study aimed to evaluate the effects of soil management combined with peanut intercropping on the yield of plicatulum grass in an organic system. A randomized complete block design (RCBD) with six treatments and four replications was employed: (T1) control, (T2) farmer's method (organic fertilizer), (T3) peanut intercropping, (T4) peanut intercropping + farmer's method, (T5) nutrient management based on lost biomass, and (T6) peanut intercropping + nutrient management based on lost biomass. The results indicated that peanut intercropping with nutrient management based on lost biomass (T6) tends to increase soil organic matter content. Additionally, available phosphorus and available water capacity were significantly enhanced. This treatment also resulted in a marked increase in nitrogen and potassium accumulation in the grass, leading to the highest yield and improved protein quality, shifting from low to medium levels. Therefore, peanut intercropping with nutrient management based on loss biomass is a recommended practice for farmers.
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King Mongkut's Agricultural Journal
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