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Influence of Periodical Staggered Nipping and Plant Population on Castor (Ricinus communis L.) Production Kumar K. Sunil, Shivaramu H. S. Department of Agronomy, College of Agriculture, UAS, GKVK, Bengaluru-560 065 Online published on 2 January, 2017. Abstract The field experiment was conducted during the kharif season of 2013 at ZARS, University of Agricultural Sciences, Gandhi Krishi Vigyan Kendra, Bengaluru on red sandy clay loam soil to knowthe influence of periodical staggered nipping on growth and yield of castor and also tofind out the suitable plant population for castor. Nipping and different spacings in castor significantly influenced the seed yield and net returns. Periodical staggered nipping leaving one spike in each branch recorded significantly higher seed yield (16.74 q ha−1) and net returns (¹ 32285 ha−1) as compared to non-nipping treatments. Among the different spacing levels significantly higher seed yield and net returns were noticed with the spacing of 90 x 45 cm (1551.46 kg ha−1 and ¹ 27746 ha−1, respectively) and it was on par with the rowspacing of 120 x45 cm(14.02q ha−1and ¹ 24977 ha−1, respectively). Interaction effects between periodical staggered nipping and plant population were notsignificant. Top Keywords castor, spacing, nipping. Top | |
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