Vol. 11, Issue 9 (2022)

Author(s):
M Jitendra, K Srinivasulu, PVN Prasad and M Ravi Babu

Abstract:
A field experiment was undetaken during rabi season, 2020–21 on a sandy loamy soil at the agricultural college farm, Bapatla to investigate the effect of different weed management practices on the growth and yield of groundnut. The experiment was laid out in randomized block design with nine treatments and three replications. The results of the experiment revealed that the lowest weed density, weed dry weight and the highest weed control efficiency were recorded at 60 days after sowing (DAS) with hand weeding at 20 and 40 DAS (12.87 No. m^-2, 5.61 g m^-2 and 93.84%, respectively), which was on a par with alachlor 1.5 kg a.i ha^-1 as pre-emergence followed by (PE fb) hand weeding at 30 DAS (23.67 No. m^-2, 15.94 g m^-2 and 82.48%, respectively) and Fomesafen 110g + fluazifop-p-butyl 110 g a.i ha^-1 as post emergence (PoE) at 20 DAS (22.78 g m^-2 and 74.96%, respectively). Crop growth parameters like plant height, dry matter production and leaf area index were found superior with hand weeding at 20 and 40 DAS, which was on par with alachlor 1.5 kg a.i ha^-1 as pre-emergence followed by hand weeding at 30 DAS and propaquizafop 50 g + imazethapyr 75 g a.i ha^-1 as post emergence at 20 DAS. Highest number of pods/plants, pod yield, kernel yield and shelling per cent were recorded with hand weeding at 20 and 40 DAS (8.2, 2287 kg ha^-1, 1630 kg ha^-1 and 71.2%, respectively), which was on a par with alachlor @ 1.5 kg a.i ha^-1 as pre-emergence.