Effect of foliar application of secondary nutrients and zinc on growth and yield of Blackgram

Abstract

A field experiment was conducted during rabi, 2016-17 on sandy loam soils of College Farm, Agricultural College, Mahanandi to study the effect of foliar sprays of secondary nutrients and zinc nutrition on growth, yield attributes and yield of blackgram. The experiment comprised of eight treatments viz., control (T1), RDF (20-50-0 kg N-P2O5-K2O ha-1) (T2), RDF + foliar application of one per cent CaNO3 (T3), RDF + foliar application of one per cent MgNO3 (T4), RDF + foliar application of one per cent Sulphur (T5), RDF + foliar application of one per cent each of CaNO3, MgNO3 and Sulphur (T6), RDF + foliar application of ZnSO4 @ 0.2 per cent (T7), T6 + foliar application of ZnSO4 @ 0.2 per cent (T8). The results revealed that all the growth parameters, yield attributes and yield was significantly influenced with the foliar spray of secondary nutrients (Ca, Mg and Sulphur) and zinc at 25 and 45 DAS along with recommended dose of fertilizers (T8). This particular treatment was comparable with foliar spray of secondary nutrients along with recommended dose of fertilizers (T6).