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Enhanced Phytotoxicity of Bentazon with Organophosphate and Carbamate Insecticides

Published online by Cambridge University Press:  12 June 2017

James R. Campbell  and
Donald Penner
James R. Campbell
Affiliation:
Dep. Crop and Soil Sci., Pesticide Res. Center, Michigan State Univ., East Lansing, MI 48824
Donald Penner
Affiliation:
Dep. Crop and Soil Sci., Pesticide Res. Center, Michigan State Univ., East Lansing, MI 48824
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Abstract

The organophosphate insecticides, malathion [S-1,2-di (ethoxycarbonyl)ethyl O, O-dimethyl phosphorodithioate], parathion (O, O-diethyl O-4-nitrophenyl phosphorothioate) and diazinon (O,O-diethyl O-2-isopropyl-6-methylpyrimidin-4-yl phosphorothioate) combined with bentazon [3-isopropyl-1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide], caused severe injury to soybean [Glycine max (L.) Merr. ‘Corsoy′] and navy bean (Phaseolus vulgaris L. 'Seafarer′). Postemergence tank – mixture applications of bentazon with organophosphate or carbamate insecticides, or soil-applied organophosphate insecticides prior to bentazon treatments, did not interact with bentazon to injure corn (Zea mays L. ‘Great Lakes Hybrid 4122′). Technical grade malathion interacted with bentazon to the same extent as formulated malathion. Combination treatments of malathion with bentazon resulted in the same degree of injury whether they were applied as tank mixtures or split applications 48 h apart.

Keywords

Glycine maxPhaseolus vulgarismalathionparathiondiazinon
Type
Research Article
Information
Weed Science , Volume 30 , Issue 3 , May 1982 , pp. 324 - 326
Copyright
Copyright © 1982 by the Weed Science Society of America 

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References

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