Archives of Current Research International

Phosphorus and zinc availability influence nutrient acquisition in field pea, and nutrient-mobilising microorganisms may improve the utilisation of these elements. This study evaluated the effects of phosphate- and zinc-solubilising microorganisms and nutrient inputs on soil nutrient status, plant nutrient content, nutrient uptake, and field pea yield under the conditions of Chhattisgarh. A field experiment was conducted during the Rabi season at Indira Gandhi Krishi Vishwavidyalaya, Raipur, using the variety Indira Matar-1. Eleven treatments were arranged in a randomised block design with three replications. Nitrogen, potassium, and sulphur were each applied at 20 kg ha⁻¹, together with Rhizobium culture, across all treatments. Post-harvest soil phosphorus and zinc differed significantly among treatments, whereas soil nitrogen and potassium did not. Treatment T11, comprising the recommended dose of phosphorus and nutrient mobiliser LNm 43a, recorded the highest soil phosphorus (12.40 kg ha⁻¹), seed yield (1,700 kg ha⁻¹), and stover yield (3,950 kg ha⁻¹). Under T11, nitrogen uptake in seed and stover was 72.70 and 59.31 kg ha⁻¹, phosphorus uptake was 4.92 and 6.01 kg ha⁻¹, and potassium uptake was 23.49 and 143.14 kg ha⁻¹, respectively. The highest soil zinc concentration (1.97 mg kg⁻¹) occurred under T10, comprising 50% of the recommended phosphorus dose, zinc sulphate, Biophos, and Biozinc. Zinc uptake did not differ significantly among treatments. These findings indicate treatment-specific differences in nutrient availability, uptake, and productivity under the conditions evaluated. Therefore, integrated nutrient management may serve as an effective strategy for improving field pea production and nutrient-use efficiency.