Effects of herbicides and fertility levels on weed dynamics and productivity of wheat (Triticum aestivum L.)

Abstract

A thrice replicated 2 year field experiment was conducted during Rabi seasions of 2013-14 and
2014-15 to study the efficacy of various herbicides and fertility levels on weed dynamics and
productivity of wheat in a factorial randomized block design using F test. The results revealed that
among the herbicidal treatments, post emergence application (30 DAS) of Clodinafop + Metsulfuron
@ (60 g + 4 g ha–1) performed significantly better but statistically at par with two hand weedings
with respect to reduction in population as well as dry weight of weeds and obtained improved the
plant height, dry matter accumulation, grain yield, straw yield and total NPK uptake, by wheat
crop. Likewise, 100% NPK + FYM 7.5 t ha–1 not only resulted in significantly increasing yield and
nutrient removal, but also reduced weed population as well as their dry weight compared to other
nutrient sources. Thus, 100% NPK + FYM @ 7.5 t ha–1 with Clodinafop + Metsulfuron @ (60 g + 4 g
ha–1) may be recommended for better weed management and higher wheat yield.