Growth, yield and economics of Pusa Gautami variety influenced by nutrient doses and sources

Abstract

A Field experiment was conducted during the Rabi season of 2022-23 at the Agriculture Research Farm of Maharishi Markandeshwar (Deemed to be university), Mullana, Ambala (Haryana). Treatments viz. T1- Control, T2-100 NPK, T3-100% NPK + Nano-N spray at 28 and 45 DAS, T4-100% NPK + Bio-nano-P spray at 28 and 45 DAS, T5-100% NPK + Bio-nano-K spray at 28 and 45 DAS, T6-100% NPK + Bio-nano-Zn spray at 28 and 45 DAS, T7-100% NPK + Nano-N + Bio-nano-P + Bio-nano-K + Bio-nano-Zn spray at 28 and 45 DAS, T8-75% NPK, T9-75% NPK + Nano-N spray at 28 and 45 DAS, T10-75% NPK + Bio-nano-P spray at 28 and 45 DAS, T11-75% NPK + Bio-nano-K spray at 28 and 45 DAS, T12-75% NPK + Bio-nano-Zn spray at 28 and 45 DAS, T13-75% NPK + Nano-N + Bio-nano-P + Bio-nano-K + Bio-nano-Zn spray at 28 and 45 DAS were arranged in a randomized block design (RBD) comprising 3 replications. HD-3086, popularly known as “Pusa Gautami” seeds were sown on November 18th, 2022, and the crops were harvested on April 8th, 2023. Urea (46% N), diammonium phosphate (46% P2O5 and 18% nitrogen) and muriate of potash (60% K2O) and 4 kg of zinc sulfate as nutrient doses and sources. HD 3086 responded well to nutrient doses and sources, especially treatment T7, which exhibited significantly superior results in both yield and economic aspects. This resulted in outstanding grain (5300 kg/ha) and straw (6750 kg/ha) yield, generating net returns of 100,299 Indian Rupees, additionally, it achieved a peak B: C ratio of 2.0. Therefore, farmers can utilize bio-nano-fertilizers as an efficient nutrient delivery system in their fields, as NPK alone is not sufficient.