Vol. 12, Issue 6 (2023)

Author(s):
Anjali Patel, GP Banjara, GK Shrivastava and Tapas Chowdhury

Abstract:
A field experiment was laid out during the winter season of 2021-22 and 2022-23 at Instructional cum Research Farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh to study the effect of weed management practices on growth of chickpea. The experiment was carried out in randomized block design with fourteen treatments, replicated trice. The experiment comprised and unweeded control. Results revealed that growth parameters like plant height (51.9 cm), number of primary branches plant^-1 (3.3) and root length (20.4 cm) were recorded maximum in oxyfluorfen 150 g ha^-1 (PE) fb propaquizafop 100 g ha^-1 (PoE). Growth parameters viz., numerb of secondary branches plant^-1 (18.9), number of leaves plant^-1 (95.0), leaf area plant^-1 (639.0 cm²), leaf area index (2.13), leaf area duration (53.6 days), dry matter accumulation (26.91 g plant^-1) and root dry weight (2.32 g plant^-1) were found to be performed best in oxyfluorfen 150 g ha^-1 (PE) as pre-emergence fb topramezone 20.6 g ha^-1 (PoE). Hand weeding twice however recorded the maximum values of aforesaid parameters while the lowest were recorded in unweeded control. Crop growth rate and relative growth rate were found to be increased upto 60 DAS and decreased thereafter and found to be maximum under oxyfluorfen 150 g ha^-1 (PE) fb topramezone 20.6 g ha^-1 (PoE). Among herbicidal treatments, seed yield, stover yield and biological yield were significantly higher in combined application of oxyfluorfen 150 g ha^-1 (PE) fb topramezone 20.6 g ha^-1 (PoE) (1746 kg ha^-1, 2670 kg ha^-1 and 4416 kg ha^-1, respectively) which was at par with metribuzin 350 g ha^-1 (PE) fb topramezone 20.6 g ha^-1 (PoE). These treatments were statistically similar with hand weeding twice at 20 and 40 DAS having maximum values of above characters while unweeded control proved inferior.