Screening of herbicides for effective weed control in Bajra Napier hybrid

Abstract

A field experiment was conducted to study the selectivity of herbicides to Bajra Napier hybrid (Pennisetum glaucum× Pennisetum purpureum) during 2013-14 and 2014-15. The data indicated that 63.15 and 46.51% more green forage yield was obtained in weed free crop followed by 39.37 and 29.04% in oxadiargyl at 0.09 kg a.i. ha-1 at 3-5 days after planting (DAP) fb 2, 4 D EE at 1 kg a.i. ha-1 at 20-25 DAP over weedy check in 2013-14 and 2014-15, respectively. The higher weed control efficiency (75%) and weed control index (75.5), and the lowest weed index (17.36) was found with the application of oxadiargyl at 0.09 kg a.i. /ha at 3-5 (DAP) fb 2, 4 D EE at 1 kg a.i. /ha at 20-25 DAP. It was, therefore, quite obvious from the experimental findings that oxadiargyl @ 0.09 kg a.i. /ha at 3-5 (DAP) followed by 2, 4 D EE@ 1 kg a.i./ha can safely replace the laborious, time consuming and costly hand weeding.