#basal nitrogen

Field try was led at wetland ranch of Tamil Nadu Agricultural University, Coimbatore, during summer season, 2022 with a target of amplifying the efficiency and benefit of greengram by embracing shifted portion of basal nitrogen and foliar utilization of nano and ordinary urea at Flower Initiation (FI) stage and 15 days from that point. The examination was spread out in factorial randomized block plan and recreated threefold with the accompanying medicines viz., N1 - 100 percent RDN (25kg N ha-1), N2 - 80% RDN (20kg N ha-1), N3 - 60% RDN (15kg N ha-1) and N4 - Control as variable I, and F1 - Nano urea @ 2ml liter-1 of water, F2 - Nano urea @ 3ml liter-1 of water, F3 - Nano urea @ 4ml liter-1 of water and F4 - 1% urea as component II. The trial results uncovered that, 100 percent RDN and nano urea foliar shower @ 4ml liter-1 of water altogether enrolled higher ripeness co-effective (71.2%), cases plant-1 (38.5 Nos.), seeds unit 1 (12.7 Nos.) and greatest grain yield (1291 kg ha-1). In any case, it was comparable to the use of 80% RDN and nano urea foliar shower @ 4ml liter-1 of water, which recorded ripeness co-productive of 70.6%, 38.0 units plant-1, 12.6 seeds unit 1 and grain yield of 1289 kg ha-1. In financial matters point of view likewise, use of 100 percent RDN and foliar supplement of nano urea @ 4ml liter-1 accounted greatest gross return (₹100114 ha-1), net return (₹53549 ha-1) and advantage cost proportion (2.15), which was practically identical with utilization of 80% RDN and foliar use of nano urea @ 4ml liter-1 of water at FI stage and 15 days from there on. In view of the exploratory outcomes, it is presumed that decreased utilization of basal nitrogen i.e., 80% RDN with nano urea foliar splash @ 4ml liter-1 of water at FI stage and 15 days from there on observed to be the ideal nitrogen portion and nano urea foliar sustenance for amplifying the efficiency and productivity of summer flooded greengram.