Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Studies on weed control in pearlmillet.

Abstract

Field trials were conducted at Pantnagar in the kharif seasons of 1985-86 to compare the efficacy of manual weeding and 4 herbicides (pre-em. atrazine, methabenzthiazuron and alachlor at 1, 2 and 2 kg/ha, resp., and 0.9 kg dicamba at 20 d after sowing (DAS)) for the control of weeds (mainly Echinochloa colonum, Boerhavia diffusa [B. repens], Eleusine indica, Cyperus rotundus and Eragrostis japonica) in pearl millet [Pennisetum americanum]. The number and DW of weeds at 30 DAS decreased from control values of 512-1212 plants/m2 and 275.6-293.3 g/m2, resp., in unweeded plots to 260-848 plants and 42-224 g, resp., as a result of all herbicides. Manual weeding resulted in 512 weeds/m2 (305.1 g/m2). Crop DM and green fodder yields were increased from 1.49-3.46 t/ha and 6.79-18.11 t, resp., by all treatments except alachlor to 4.38-9.84 t and 20.06-57.67 t, resp. The lowest weed incidence and DW resulted from the use of alachlor.