An experiment was conducted for two consecutive years at Agricultural Research Station, Amadalavalasa, Andhra Pradesh during Rabi season of 2010–11 and 2011–12 to study the effect of sowing dates, spacing and topping management practices on growth and seed yield of sunnhemp. The results revealed that delay in sowing from 15 September to 15 October significantly improved the growth, yield attributes and seed yield of the crop and resulted in significantly higher branches/plant, pods/plant and seeds/pod and recorded the highest seed yield (7.95 q/ha) as compared to 15 September and 1 October sown crop. Availability of more sunshine hours and prevailing of congenial weather with delayed sowing from 15 September might have positive influence on yield attributes as well as seed yield of sunnhemp. Spacing of 45 x 10 cm resulted in significantly higher number of branches, seeds/pod and seed yield than 30 x 10 and 30 x 20 cm. Topping at 45 days after sowing (DAS) significantly increased the branches/plant, pods/plant, number of seeds/pod and seed yield compared to 30 DAS.
Sunnhemp, sowing dates, spacing, topping, seed yield
