A study the effect of various treatments on nutrient (N, P, K, S) uptake in soybean (Glycine max L.)

Soybean is a vital legume crop known for its high protein content and significant contribution to global agriculture. This study investigates the effect of micronutrients, biofertilizers, and organic amendments on the nutrient uptake, symbiotic traits, and overall quality of soybean. The experiment was conducted using different treatment combinations of recommended doses of fertilizers (RDF) along with Rhizobium and Phosphate Solubilizing Bacteria (PSB) inoculation, micronutrients such as ZnSO₄, FeSO₄, MnSO₄, Borax, and Ammonium Molybdate, and organic amendments like Farmyard Manure (FYM). The results revealed that integrating RDF with Ammonium Molybdate + Rhizobium + PSB inoculation (T4) led to the highest improvement in nitrogen (N), phosphorus (P), potassium (K), and sulfur (S) content in both seeds and straw, along with increased protein content. The application of FYM (T8) also significantly enhanced nutrient uptake, indicating the beneficial role of organic amendments in improving soil fertility. The statistical analysis showed a significant increase (p < 0.05) in nutrient content across treatments, demonstrating the positive impact of integrated nutrient management on soybean productivity. The findings suggest that a balanced combination of chemical fertilizers, biofertilizers, and organic amendments can enhance nutrient availability and soybean quality while promoting sustainable agricultural practices. Future research should explore the long-term impact of these treatments on soil health and yield stability.