Simazine as pre-emergence application at 1.00 and 1.75 ka a, i/ha was offective in controlling weeds in maize and superior to two hand weedings. The grain yield in herbicid-treated plots were on par with twice hand weeded plots. The sub-herbicidal dose of simazine (0.25 kg a. i. / ha) increased the protein content of grain than the other treatments. Nitrogen levels did not influence the weed population but the weed weight increased with each increment of nitrogen. Grain yield was maximum under 120 ke N/ha but it was on par with 60 and 90 kg N/ha.
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Tamil Nadu Agricultural University
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Tamil Nadu, India.
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