Influence of Nipping and Hormonal Spray on Growth Parameters and Seed Yield in Cowpea Variety (Vigna unguiculata L.)

Abstract

A field experiment was conducted to know the influence of nipping and hormonal sprays on growth and seed yield of cowpea variety at the Organic Research Farm (HRF), Karguanji, Department of Seed Science and Technology, Institute of Agricultural Sciences, Bundelkhand University, Jhansi (U.P.) India. In the present experiment, days to 50 percent flowering and no. of leaves at 30 DAS  was  not  influenced  by  the  combined  effect  of  nipping  and  foliar  sprays  but  the plant height, number of branches, number of leaves at 60 DAS and at harvest and dry matter  production  at  various  stages  was  influenced.  The  plant  height  was  relatively more  at  all  the  stages  of  growth  in  non nipped  plants  with  all  the  hormonal  sprays GA350  ppm  (N1H3),  while  number  of  leaves  were  more  at  60  DAS  and  at  harvest, number of branches per plant at all stage and  dry  matter  at  harvest were  more  in  nipping  at tendril stage combined to 1000 ppm lihocin spray (N2H2).The  various  seed  yield  traits  were  also  higher  in nipping  at  tendril  stage and sprayed  with  growth  hormones  lihocin  1000  ppm  (H2N2). The present  investigation has  indicated  a  relatively  more  beneficial  influence  of  both  nipping  and  hormonal spray  on  number  of  pods  per  plant,  pod  length,  number  of  seeds per pod, pod wt. per plant, seed yield per plant and seed yield per hectare.