Persistent toxicity of insecticidal dusts against grey weevil Myllocerus undecimpustulatus maculosus (Desbr.)
2000
Singh, M.R. (Indian Institute Sugarcane Research, Lucknow (India). Division of Entomology) | Marwaha, K.K. (Indian Agricultural Research Institute, New Delhi (India). Division of Entomology)
Four dusts viz. phenthoate carbaryl, DDT 2.0 and malathion 5.0% were evaluated for determining the persistent toxicity (PT) against adults of grey weevil, Myllocerus undecimpustulatus maculosus by exposing to the maize foilage treated with dusts @ 25 kg./ha. On the basis of PT and LT50 values, the order of relative efficacy was phenthoate dust 2.0% followed by DDT 2.0% malathion 5.0% and carbaryl 2.0% dust.
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