Field experiments to study the comparative efficiency of physical, chemical and combination methods of weed control in grain sorghum (Var. CSH, 1) showed that among the fourteen treatments tried two combination treatments the pre-emergence application of either atrazine or propazine at 0.5 kg per ha followed by one lato season hand weeding at 45 days after sowing were significantly superior in efficiency and selectivity. These trest- ments were on par with three manual weedings given to this crop and recorded high not returns per unit area.
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