The present investigation entitled “Weed control efficiency and grain yield of wheat (Triticum aestivum L.)” under Pre-and Post-Emergence Herbicides”was carried out at student research farm, Department of Agriculture, Khalsa College Amritsar. The soil of the experimental field was sandy loam texture with normal pH and electrical conductivity, low in organic carbon and available nitrogen, medium in available phosphorus and high in available potassium. The experiment was laid out in randomized block design with 12 treatments comprising T1 (Control), T2 (Pinoxaden 50 ml at 28 days after sowing (DAS), T3 (Pinoxaden 50 ml at 42 days after sowing (DAS), T4 (Pinoxaden 50 ml at 56 days after sowing (DAS), T5 (Pendimethalin 750 ml), T6 (Pendimethalin 750 ml + T2 ), T7 (Pendimethalin750 ml + T3 ), T8 (Pendimethalin 750 ml + T4 ), T9 (Pendimethalin 1000 ml), T10 (Pendimethalin 1000 ml + T2 ), T11 (Pendimethalin 1000 ml + T3 ), T12 (Pendimethalin 1000 ml + T4 ) replicated thrice. From the experiment it was observed that T10 (Pendimethalin 1000 ml + T2 ) was found most effective in controlling weed population, dry matter accumulation of weeds and produced higher grain yield, straw yield and weed control efficiency than T7 , T8 , T5 , T3 , T4 and least were in T1. Treatment T10 remained at par in terms of growth and yield attributes to T11, T12, T9 , T6 , T2 and was significantly better than T3 , T4 , T5 , T7 and T8 . All the weed control treatments produced significantly higher returns than the control.
