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Effects of Trifluralin and Organophosphorus Compounds on Cotton Seedlings

Published online by Cambridge University Press:  12 June 2017

Ghanem S. Hassawy  and
K. C. Hamilton
Ghanem S. Hassawy
Affiliation:
Univ. of Arizona, Tucson, Arizona; now Univ. of Bagdad, Coll. of Agr., Abu Graib, Iraq
K. C. Hamilton
Affiliation:
Arizona Agr. Exp. Sta., Tucson, Arizona
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Abstract

Soil applications of α,α,α,-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin), O,O-diethyl S-((ethylthio)methyl)-phosphorodithioate (phorate) and their combinations did not affect cotton (Gossypium hirsutum L.) germination. Plants grown on soil treated with trifluralin were shorter than plants on soil treated with phorate. High rates of phorate reduced shoot weights. Root weights of phorate-treated plants were higher than those of trifluralin-treated plants but lower than those of the controls. In culture solution and soil, trifluralin inhibited lateral roots of cotton. In the presence of phorate, trifluralin-treated plants produced more lateral roots than plants treated with trifluralin alone. Other organophosphorus compounds, when used in combination with trifluralin, did not increase the number of lateral roots.

Type
Research Article
Information
Weed Science , Volume 19 , Issue 2 , March 1971 , pp. 166 - 169
Copyright
Copyright © Weed Science Society of America 

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References

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