BIO-EFFICACY OF POST-EMERGENCE HERBICIDES IN TRANSPLANTED RICE OF CHHATTISGARH PLAINS

Abstract

A field experiment was conducted at the Instructional cum Research Farm, IGKV, Raipur during kharif season of 2011. The experiment consisted of 10 treatments laid out in randomized block design with three replications. The results revealed that significantly lowest density (4.17) and dry matter of weeds/m² (2.82) were registered with two hand weeding. The highest weed growth rate (0.80) was observed under control, whereas the lowest weed growth rate (-0.06) was found in two hand weeding, but the highest weed control efficiency (90.21%) were recorded under two hand weeding at all the stages of observation. The highest number of effective tillers/hill (12.67), number of filled grains/hill (135.67), grain yield (5.54 t/ha), straw yield (6.74 t/ha) and harvest index (45.03%) was obtained in two hand weeding.