For sustainable wheat production management of Phalaris minor are the major challenge. An experiment was carried out at Kanpur in rabi season of 2017-18 and 2018-19 in split-plot design with four replication having four irrigation regimes in main plot viz. irrigation at CRI and active tillering (I1), irrigation at CRI + jointing + booting (I2), CRI + active tillering + booting + flowering stage (I3) and irrigation at CRI + jointing + booting + flowering + milking stage (I4), and eight herbicidal treatments (W1-weedy check, W2- hand weeding at 20 and 40 days after sowing, W3-sulfosulfuron 25 gha-1 at 35 DAS, W4- pendimethalin (pre-em) fb WCPL-15, 400 gha-1at 35 DAS, W5- broadway (carfentrazone ethyl 20% + sulfosulfuron 25%WG) 100 gha-1 at 35 DAS, W6- halauxafen + penxasulam 23.5%, 75 gha-1 at 35 DAS, W7- halauxafen - methyl 1.21% w/w + fluroxypyr at 35 DAS and W8- clodinafop- propargyl 15% + metsulfuron 1%, 400 gha-1 35 DAS) were allocated to sub plots for assessing their effects on P.

CRI, Irrigation, Herbicides, P. minor, WCE, Yield.

The field experiment was conducted at Kanpur during 2017-18 and 2018-19 under SPD having four replication with four irrigation regimes in main plot and eight factors of weed management were allocated to sub plots. Based on the above results it can conclude that irrigation at CRI and active tillering stage (I1) significantly reduced the density and weight of P. minor with highest WCE and CRI however, maximum WE, grain and biological yield was achieved with I4 irrigation. Among weed management treatments, application of broadway (carfentrazone- ethyl 20% + sulfosulfuron 25% WG) 100 gha 1at 35 DAS (W5) was recorded lowest density and weight of P. minor, WE and the highest WCE, CRI, WPI and yield of wheat followed by W8.

Lakra, K. (2021). Effect of Irrigation Regimes and Herbicides on Phalaris Minor in Wheat (Triticum aestivum L.). Biological Forum – An International Journal, 13(2): 494-499.