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Chlorbromuron-Carbofuran Interaction in Corn and Barley

Published online by Cambridge University Press:  12 June 2017

Allan S. Hamill  and
Donald Penner
Allan S. Hamill
Affiliation:
Dep. of Crop and Soil Sci., Mich. State Univ., East Lansing, Mich.
Donald Penner
Affiliation:
Dep. of Crop and Soil Sci., Mich. State Univ., E. Lansing, ML 48823
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Abstract

Treatments with the herbicide 3-(4-bromo-3-chlorophenyl)-1-methoxy-1-methylurea (chlorbromuron) were combined with seed treatments with the insecticide, 2,2-dimethyl-2, 3-dihydrobenzofuranyl-7-N-methylcarbamate (carbofuran), to measure phytotoxic interaction effects on barley (Hordeum vulgare L. ‘Larker’) and corn (Zea mays L. ‘Michigan 400’). The combination synergistically reduced radicle length in barley seedlings and reduced the leaf area and dry weight of 7-day-old corn seedlings grown in sand culture. The chlorbromuron-carbofuran combination reduced net photosynthesis in barley and corn and increased respiration in barley. The 14C from 14C-chlorbromuron preferentially accumulated in barley and corn shoots. The carbofuran seed treatment resulted in a reduced level in barley shoots and corn roots but increased the accumulation of 14C in barley roots and corn shoots. The basis for this interaction appeared related to the increased accumulation of chlorbromuron in corn and barley shoots and reduced chlorbromuron metabolism.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 4 , July 1973 , pp. 335 - 338
Copyright
Copyright © 1973 Weed Science Society of America 

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References

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