Chemical weed management in transplanted turmeric (Curcuma longa L.)

Abstract

The study was conducted at KRCCH, Arabhavi during the year 2017-18 to study the effect of pre-emergent herbicides in transplanted turmeric. The experiment consisted of 10 herbicide treatments along with weed free check, unweeded control and polythene mulching. The experiment was laid out in randomized block design with three replications. The results revealed that all weed management methods significantly reduced the weed density and dry weight. Among the herbicides, significantly lower weed density and dry weight was recorded in application of Metribuzin 70% WP @ 1.05 kg a.i. ha-1 (8.00 m-2 and 9.33g m-2, respectively) at 30 DAT. With respect to fresh rhizome yield, application of Oxyfluorfen 23.5% EC @ 0.3 kg a.i. ha-1 recorded the highest yield (8.04 kg plot-1) as compared to the other post planting pre-emergent herbicides.