Abstract

Dryland areas hold significant potential as productive agricultural land in the future. To improve land-use efficiency, intercropping systems are a promising cultivation strategy. This study aimed to evaluate the effectiveness of various bioameliorant compositions on nitrogen (N) and phosphorus (P) uptake, as well as the yield of maize-soybean intercropping on suboptimal land. The experiment was conducted from June to August 2025 in Sumur Mual Hamlet, Pemenang Barat Village, Pemenang District, North Lombok Regency, and in the Microbiology and Soil Chemistry Laboratories, Faculty of Agriculture, University of Mataram. A Randomized Complete Block Design (RCBD) was used with five treatments and three replications: P0 (no bioameliorant), F1 (10% compost, 10% manure, 10% rice husk biochar, 70% mycorrhizal biofertilizer), F2 (15%, 15%, 15%, 55%), F3 (20%, 20%, 20%, 40%), and F4 (25%, 25%, 25%, 25%). The results showed that the F4 treatment produced the highest values in all observed parameters, including N and P uptake and maize-soybean yields. These findings indicate that a balanced bioameliorant composition (F4) is effective in enhancing soil fertility and productivity in dryland intercropping systems.

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