Tests with Dow ET-57 against Cattle Grubs in Oregon1
- 1 June 1957
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 50 (3), 244-246
- https://doi.org/10.1093/jee/50.3.244
Abstract
During 1955-56 Dow ET-57 was tested as a systemic against cattle grubs (Hypoderma lineatum) and bovis at doses of 10 to 200 mg/kg. This material was effective against grubs present in the backs of animals as well as against the encystment of new ones. Second-instar grubs were killed more rapidly and efficiently than 3d-instar grubs. The material failed to kill many of the grubs that were within 2 weeks of emergence. In limited spray tests the material caused 100% kill of grubs at 2.5 but only about 50% or less at 1% concentration.Keywords
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