Author(s):

Deeba Hassan, R Thakur, RR Upasani, RP Manjhi and Arvind Kumar

Abstract: A field experiment was conducted at Birsa Agricultural University, Ranchi, Jharkhand during rainy and winter seasons of 2014-2015 and 2015-2016 in sandy-loam soil to study the effect of Imazethapyr on yield, yield attributes and economics of blackgram crop in blackgram-mustard cropping system. The experiment compreised of sixteen weed treatments i.e. Imazthapyr 50g/haPRE (T1), Imazthapyr 70g/haP RE (T2), Imazthapyr 80g/ha PRE (T3), Imazthapyr 50g/ha POE (T4), Imazthapyr 70g/haPOE (T5), Imazethapyr 80g/ha POE (T6), Imazethapyr. +Imazemox 50g/ha PRE (T7), Imazethapyr. +Imazemox 70g/ha PRE (T8), Imazethapyr. +Imazemox 80g/ha PRE (T9), Imazethapyr. +Imazemox 50g/ha POE (T10), Imazethapyr. +Imazemox 70g/ha POE (T11), Imazethapyr. +Imazemox 80g/ha POE (T12), Pendimethalin 1000g/ha PRE (T13), Imazethapyr + Pendimethalin 1000g/ha (T14), Hoeing twice (T15) each performed at 20 and 40 DAS and weedy check (T16). The experiment was laid out in RBD. The result revealed that Imazethapyr + Imazemox @ 80g/ha post emergence (T12) recorded 108.78, 46.11 and 70.91 percent higher seed yield compared to weedy check during 2014, 2015 and under pooled and recorded significantly higher gross return, net return and B: C ratio to the tune of 53.89, 38.24, 45.62 percent, 148.53, 87.19, 113.37 percent and 148.53, 87.19 and 113.37 percent as compared to weedy check (T16) during 2014-2015, 2015-2016 and under pooled data.

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