Laboratory Tests with Dichlorvos Applied as a Wheat Protectant Against Rice Weevils
- 1 April 1968
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 61 (2) , 356-358
- https://doi.org/10.1093/jee/61.2.356
Abstract
In the laboratory, dichlorvos residues of 0.8 to 1.9 ppm on Soft Red Winter wheat produced 90 to 100% mortalities among rice weevil adults, Sitophilus oryzae (L.), and reduced the number of progeny by 89% or more. Residues of 3.8 ppm or more provided 85% or more mortality of 3rd- and 4th-instar larvae. Initial residues of 3.8 to 8.0 ppm decreased 89 to 76%, respectively, in 28 days.Keywords
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