Integrated control of rice gall midge (GM)
1985
Samalo, A.P. (Orissa Univ. of Agriculture and Technology, Bhubaneswar (India). Entomology Dept.)
An economic evaluation of GM control methods showed that on Jaya all controls produced more profit than no treatment. Including phorate G in the control schedule gave $300 profit/ha compared to $86 with quinalphos alone. The benefit-cost ratio indicated that seedling root dip followed by broadcast phorate G at 25 DT gave maximum profit. The second best treatment was phorate applications at 25 and 45 DT. Phorate G implanted in mudballs at 25 DT following seedling root dip was effective and economical, but is a cumbersome process and may be less acceptable to farmers. Maximum protection cost more than $100/ha, which was high for a farmer of marginal land. Seedling rootdip followed by phorate G at 25 DT gave the maximum benefit-cost ratio of 8.78:1 and cost only $39/ha. GM-resistant Shakti, with no insecticide treatment, gave a $547 profit/ha.
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