Pantnagar Journal of Research

Abstract

A field experiment was conducted during Kharif season 2019-20 at the N. E. Bourlag Crop Research Centre of G. B. Pant University of Agriculture & Technology, Pantnagar (Uttarakhand) to find out growth and yield response of black gram (Vigna mungo L.) to foliar nutrition and growth regulator application. The black gram variety Pant U-31 was used for sowing. The experiment was consisted of 11 treatments viz., absolute control, water spray at 40 and 55 DAS, foliar spray of 2% urea at 40 (flowering) and 55 DAS (grain filling), 2% SSP at 40 DAS, 2% SSP at 55 DAS, 2% SSP at 40 and 55 DAS, 100 ppm SA(salicylic acid ) at 40 DAS, 100 ppm SA at 55 DAS, 100 ppm SA at 40 and 55 DAS, and 2% SSP at 40 DAS followed by 100 ppm SA at 55 DAS,100 ppm SA at 40 DAS fb2% SSP at 55 DAS. The experiment was laid out in Randomized Block Design with three replications. Foliar spray of 2% SSP at flowering and grain filling produced highest branches per plant and dry matter per plant which was at par with foliar spray of 2% urea at 40 and 55 and 100 ppm SA at 40 DAS followed by 2% SSP at 55 DAS. The grain yield was significantly influenced by the foliar application of 2% single super phosphate at flowering and 15 days later (36.2%), followed by 2% urea at flowering and 15 later (34.6% )and foliar spray of 100 ppm salicylic acid at 40 days after sowing followed by 2% single super phosphate at 55 days after sowing (28.9%). The number of pods per plant, grain weight per plant and 1000 seed weight were also significantly influenced by foliar nutrition and salicylic acid whereas number of grains per pod did not responded significantly in regards to foliar nutrition and salicylic acid. Therefore, it may be concluded that foliar spray of SSP @ 2% at flowering and grain filling was found significantly effective as foliar spray of 2% urea at flowering and grain filling and salicyclic acid @ 100 ppm at flowering followed by SSP @ 2% at grain filling to improve growth and grain yield of black gram.