Volume: 33 Issue: 2
Year: 2020, Page: 282-283, Doi: https://doi.org/10.61475/jfm.v33i02.273
Received: Dec. 1, 2019 Accepted: April 1, 2020 Published: June 25, 2020
A field experiment was conducted in RCBD at the Main AgriculturalResearch Station, UAS Dharwad on medium black soil during kharif2016-17, comprising eight treatments viz., early post emergent (POE)application of Imazethapyr 10 % SL @ 75, 100, 125 and150 g a.i. ha-1,Chlorimuron 25 % EC @ 37.5 g a.i. ha-1 and pre emergent (PE)application of Pendimethalin 30 % EC @ 1.5 kg ha-1, weed free checkand weedy check. At 60 days after sowing early POE of Imazethapyr10 % SL @ 100 g a.i. ha-1 recorded lower total number of weeds m-2(3.59), weed dry weight g m-2 (2.28) and good weed control efficiency(83.52 %). However, it was on par with the application of Chlorimuron25 % EC @ 37.5 g a.i. ha-1 as early POE. Application of Imazethapyr10 % SL @ 100 g a.i. ha-1 as early POE recorded higher soybean seedyield (18.08 q ha-1), haulm yield (19.10 q ha-1). Application ofImazethapyr 10 % SL @ 150 g a.i. ha-1 as early POE recordedsignificantly lower weed count, dry weight and highest weed controlefficiency, yielded less due to the phytotoxicity on soybean crop.
Keywords: Soybean, Imazethapyr, Weed count, Weed control effeciency