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A field study was carried out to study the nutrient management in green gram (Vigna radiata L. Wilczek) and its effect on growth and yield during summer season of 2022 and 2023 at Instructional Farm, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, College of Agriculture, Dapoli, Dist. Ratnagiri, Maharashtra. The experiment was laid out in split plot design with three replications and consisted of four conventional fertilizer treatments: T1 - control, T2 - 100% RD of N and P + 100% RD of K, T3 - 75% RD of N and P + 100% RD of K and T4 - 50% RD of N and P + 100% RD of K and five sub-plot treatments consisting of nano fertilizer treatments: N1 - control, N2 - 25% RD of N through Nano-urea + 25% RD of P through Nano-phosphorous, N3 - 50% RD of N through Nano-urea + 25% RD of P through Nano-phosphorous, N4 - 25% RD of N through of Nano-urea + 50% RD of P through Nano-phosphorous and N5 - 50% RD of N through of Nano-urea + 50% RD of P through Nano-phosphorous. The conventional fertilizer treatment T2 (100% RD of N and P + 100% RD of K) and the nano fertilizer treatment N5 50% RD of N through nano-urea + 50% RD of P through nano-phosphorous (2 sprays at 45 and 60 DAT) recorded significantly higher growth and yield. Among the treatment combinations, T2N5 100% RD of N and P + 100% RD of K and 50% RD of N through nano-urea + 50% RD of P through nano-phosphorous (2 sprays at 30 and 45 DAS) recorded maximum number of functional leaves plant-1, number of branches plant-1, weight of pods plant-1 and grain yield during both the years of experimentation and in the pooled mean.
Chavan et al. (Thu,) studied this question.