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EFFECT OF SOIL INCORPORATED HERBICIDES ON WEEDS AND YIELD OF CANOLA (BRASSICA NAPUS L.)

A. TANVEER, M. AYUB, A. ALI AND M.A. NADEEM

Abstract: The effect of two soil incorporated herbicides viz., trifluralin @ 0.90,1.20,1.50 kg a.i. ha^-1 and acetochlor @ 0.094, 0.124 and 0.312 kg a.i. ha^-1 on weeds and yield of canola was evaluated in a field trial at Agronomic Research Area, University of Agriculture, Faisalabad. Trifluralin @ 1.50 kg a.i. ha^-1 was very effective in controlling the weeds and reducing their fresh and dry weight. Application of trifluralin @ 1.5 kg a.i. ha^-1 reduced the weed density (7.00m^-2) significantly as compared to control (32.67m^-2) reducing the weed dry weight from 8.1 gm^-2 to 1.7 gm^-2. Trifluralin @ 1.5 kg a.i. ha^-1 showed maximum increase (34%) in canola seed yield by increasing the number of pods per plant, seeds per pod and 1000-seed weight.
 

Department of Agronomy, University of Agriculture, Faisalabad, Pakistan.