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Effect of dose and time of atrazine application on weed infestation and yield of fodder sorghum

Effect of dose and time of atrazine application on weed infestation and yield of fodder sorghum

Journal of Agricultural Science, UK 107(2): 449-451

A field experiment comprising four rates of application of atrazine (0.25, 0.50, 0.75 and 1.0 kg/ha), three times of application (pre-emergence, 10 days after emergence and 20 days after emergence) and two additional treatments of unweeded and weed-free-crop was conducted at the National Dairy Research Institute, Karnal [India] during the rainy seasons of 1979 and 1981. Application of atrazine at 0.25 and 0.5 kg/ha pre-emergence and 10 days after emergence gave effective control of weeds and resulted in green and dry fodder yields of sorghum similar to weed-free conditions. It was noted that pre-emergence application of the atrazine at 1.0 kg/ha showed a phytotoxic effect on sorghum and resulted in significant reduction in green and dry fodder yields compared with 0.5 kg atrazine/ha.

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Accession: 001572463

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DOI: 10.1017/s0021859600087256

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