standardization of nipping technique for enhancement of seed yield and quality in sunn hemp and dhaincha

Abstract

A field experiment entitled standardization of nipping technique for enhancement newlineof seed yield and quality in sunn hemp and dhaincha was conducted during Kharif, 2019-20 newlineand 2020-21 at Seed Production Block, NSP, Seed Unit, UAS, Raichur. The experiment was newlinelaid out in a RBD with fifteen treatments including nipping and foliar spray of cycocel and newlinetheir combinations in three replications. The results emanated from the experiment newlinesignificantly recorded maximum seed yield and quality parameters. newlineNipping at 30 and 40 DAS and foliar spray of cycocel at 50 DAS (T15) recorded newlinemaximum number of branches, number of pods per plant, seed yield per plant (g), newlinegermination (%),seedling length (cm), seedling dry weight (mg) and SVI in both years. newlineWhile the nipping at 30 DAS and foliar spray of cycocel at 1000 ppm at 40 DAS (T12) is a newlinebetter option in terms of obtaining higher net returns and B:C ratio in sunn hemp. newlineIn dhaincha, maximum number of branches, number of pods per plant, seed yield newlineper plant (g), germination (%), seedling length (cm), seedling dry weight (mg) and SVI were newlinerecorded in nipping at 30, 40 and 50 DAS (T8) in both years. While higher net returns and newlineB:C ratio was obtained by performing nipping at 30 and 40 DAS (T5). newlineThe lab experiment was conducted using resultant seeds of sunn hemp and dhaincha newlineproduced during 2019-20 and 2020-21to standardize the screen aperture size by using five newlinedifferent screens in four repetitions laid out in CRD. The study revealed that 2.0 mm (S) newlinescreen was found be optimum for seed grading to get higher seed recovery (%) with better newlineseed quality parameters viz., physical purity (%), germination (%),seedling length (cm), newlineseedling dry weight (mg) and SVI in both crops. newline