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Soil Persistence of Isopropalin, Nitralin, and Trifluralin

Published online by Cambridge University Press:  12 June 2017

R. R. Romanowski  and
A. W. Libik
R. R. Romanowski
Affiliation:
Dep. Hortic., Purdue Univ., West Lafayette, IN 47907
A. W. Libik
Affiliation:
Dep. Hortic., Purdue Univ., West Lafayette, IN 47907
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Abstract

The persistence of isopropalin (2,6-dinitro-N,N-dipropylcumidine), nitralin [4-(methylsulfonyl)-2,6-dinitro-N,N-dipropylaniline] and trifluralin (a,a,a-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) applied at recommended (1X) and high (2X) rates was studies in the field on two soils. A sorghum [Sorghum bicolor (L.) Moench ‘RS 610’] root bioassay showed that the recommended rates of the herbicides caused 20% or less root inhibition at the end of the growing season in 1972. Both nitralin and trifluralin were more persistent in 1974 than in 1972 as shown by the root bioassay and growth of fall-sown rye (Secale cereale L.). The yield of sweet corn (Zea mays L. var. rugosa Bonaf. ‘Gold Cup’) was not significantly reduced when grown 1 yr after the initial application of the herbicides.

Keywords

Vegetable crops rotation
Type
Research Article
Information
Weed Science , Volume 26 , Issue 3 , May 1978 , pp. 258 - 261
Copyright
Copyright © 1978 by the Weed Science Society of America 

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References

Literature Cited

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