Annual rye grass {Lolium multiflorum Lam.) is a serious and wide spread problem in cereal crops. A field experiment with a promising herbicide diclofop [(±)-2-[4-(2,4-dichlorophenoxy)phenoxy] propanoic acid] at 0.56, 0.84 and 1.12 kg ai/ha, in comparison to commonly used linuron [N'-(3,4-dichlorophenyl)-Nmethoxy-N-methylurea] at 0.84, 1.12 and 1.41 kg ai/ha was conducted to "control rye grass {Lolium multiflorum Lam.) in triticale (X Triticosecale Wittmack), wheat {Triticum aestivum L.) and rye {Secale cereale L.). The herbicides were applied as soil-incorporated, preemergence and post-emergence. Results showed that diclofop is less phytotoxic than Linuron and the postemergence application of these herbicides was more phytotoxic on all cereal crops. Diclofop applied at 1.12 kg/ha, gave almost 100 percent rye grass control and produced 45 and 115 kg/ha higher grain yields in pre-and postemergence methods, respectively, as compared to the soil-incorporated method.
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