A field experiment conducted to study the effect of weed control under different moisture levels on maize indicated that pre-emergence spray of atrazine was effective in controlling dicot weeds and to a certain extent monocot-weeds. There was increase in yield of grain and straw at 80 per cent available soil moisture regime. There was incre- ase in yield of grain in weeded plots over no-weeding while there was phenomenal incre ase in yield of straw in herbicide applied plot over hand weeded and un-weeded plots. There was significant interaction between moisture levels and the effect of weeds on the crop.
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