Weed management and sulphur nutrition in clusterbean for higher productivity and profitability

Abstract

An experiment was conducted during kharif seasons of 2013 and 2014 at Instructional Farm of Rajasthan college of Agriculture, Udaipur ( Rajasthan) to evaluate the effect of weed management and sulphur nutrition on weed density, their biomass, productivity of Clusterbean [Cyamopsis tetragonoloba (L.) Taub] and profitability in terms of net returns and BC ratio. Hand weeding twice at 20 and 40 DAS recorded minimum weed count and weed dry matter at 50 DAS. m The minimum weed dry matter of narrow-leaved (129 kg ha-1), broad-leaved (106 kg ha-1) and total weed dry weight (235 kg ha-1) was recorded under two hand weeding treatment which was closely followed by sequential application of pre emergence application of pendimethalin 0.75 kg ha-1followed by post emergence application of imazethapyr 0.075 kg ha-1. The highest yield attributing characters viz., cluster plant-1, pods cluster-1, seeds pods-1, 1000 seed weight and seed yield plant-1 were recorded under two hand weeding followed by sequential application of pendimethalin with imazethapyr. The highest seed (1218 kg ha-1) and haulm (2440 kg ha-1) was registered in hand weeded twice treatment while net returns of 36952 and BC ratio of 2.60 was recorded pendimethalin fb imazethapyr.