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An Implanted Soil Mass Technique to Study Herbicide Effects on Root Growth

Published online by Cambridge University Press:  12 June 2017

Zane F. Lund ,
R. W. Pearson  and
Gale A. Buchanan
Zane F. Lund
Affiliation:
U. S. Dep. of Agr., Auburn University Agricultural Experiment Station, Auburn, Alabama
R. W. Pearson
Affiliation:
U. S. Dep. of Agr., Auburn University Agricultural Experiment Station, Auburn, Alabama
Gale A. Buchanan
Affiliation:
U. S. Dep. of Agr., Auburn University Agricultural Experiment Station, Auburn, Alabama
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Abstract

An implanted soil mass technique was modified to study the effect of soil-incorporated herbicides on root growth. The technique was used to study the effects of α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin) and 4-(methylsulfonyl)-2,6-dinitro-N,N-dipropylaniline (nitralin) on root growth of cotton (Gossypium hirsutum L., var. Auburn 56) and the effects of trifluralin and S-propyl dipropylthiocarbamate (vernolate) on soybeans (Glycine max (L.) Merr., var. Bragg). Vernolate had no effect, but there was only 57% as much soybean root tissue in the soil receiving 1 ppm of trifluralin as there was in the untreated check 2 months after initiating the treatments. Trifluralin and nitralin at 1 ppm reduced cotton roots to 75% and 50%, respectively, of that of the untreated check. The effects of trifluralin and low soil pH were additive, but there was no interaction between them.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 2 , March 1970 , pp. 279 - 281
Copyright
Copyright © 1970 Weed Science Society of America 

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References

Literature Cited

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