Maximizing the Productivity and Profitability of Summer Irrigated Greengram (Vigna radiata L.) by Combining Basal Nitrogen Dose and Foliar Nutrition of Nano and Normal Urea
Vaddi Saitheja, M. Senthivelu, G. Prabukumar, V. Babu Rajendra Prasad
International Journal of Plant & Soil Science · pp. 109–116 · Published 2 Aug 2022
10.9734/ijpss/2022/v34i2231362Abstract
Field experiment was conducted at wetland farm of Tamil Nadu Agricultural University, Coimbatore, during summer season, 2022 with an objective of maximizing the productivity and profitability of greengram by adopting varied dose of basal nitrogen and foliar application of nano and normal urea at Flower Initiation (FI) stage and 15 days thereafter. The experiment was laid out in factorial randomized block design and replicated thrice with the following treatments viz., N1 - 100% RDN (25kg N ha-1), N2 - 80% RDN (20kg N ha-1), N3 - 60% RDN (15kg N ha-1) and N4 - Control as factor I, and F1 - Nano urea @ 2ml litre-1 of water, F2 - Nano urea @ 3ml litre-1 of water, F3 - Nano urea @ 4ml litre-1 of water and F4 - 1% urea as factor II. The experiment results revealed that, 100% RDN and nano urea foliar spray @ 4ml litre-1 of water significantly registered higher fertility co-efficient (71.2%), pods plant-1 (38.5 Nos.), seeds pod-1 (12.7 Nos.) and maximum grain yield (1291 kg ha-1). Nevertheless, it was on par with the application of 80% RDN and nano urea foliar spray @ 4ml litre-1 of water, which recorded fertility co-efficient of 70.6%, 38.0 pods plant-1, 12.6 seeds pod-1 and grain yield of 1289 kg ha-1. In economics perspective also, application of 100% RDN and foliar supplement of nano urea @ 4ml litre-1 accounted maximum gross return (₹100114 ha-1), net return (₹53549 ha-1) and benefit-cost ratio (2.15), which was comparable with application of 80% RDN and foliar application of nano urea @ 4ml litre-1 of water at FI stage and 15 days thereafter. Based on the experimental results, it is concluded that reduced application of basal nitrogen i.e., 80% RDN with nano urea foliar spray @ 4ml litre-1 of water at FI stage and 15 days thereafter found to be the optimal nitrogen dose and nano urea foliar nutrition for maximizing the productivity and profitability of summer irrigated greengram.
Cited by 2
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