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Susceptibility of Velvet Mesquite to an Amine and an Ester of 2,4,5-T as Related to Various Biological and Meteorological Factors

Published online by Cambridge University Press:  12 June 2017

Fred H. Tschirley  and
Herbert M. Hull
Fred H. Tschirley
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Box 5735, Tucson, Arizona
Herbert M. Hull
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Box 5735, Tucson, Arizona
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Extract

Herbicidal applications to mesquite in Arizona (17), New Mexico (21), and Texas (5) indicate that the low-volatile esters of 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) are usually more effective than amine salt formulations, but there have been instances where the reverse was true. This inconsistency has occurred only in isolated cases, but was of interest in that factors which affect differential susceptibility to the ester and the amine formulations are important and should be more fully understood. The purpose of this study was to determine whether mesquite has a different period of susceptibility to the ester than to the amine. Various biological and meteorological factors were also determined to test their relation to mesquite susceptibility.

Type
Research Article
Information
Weeds , Volume 7 , Issue 4 , October 1959 , pp. 427 - 435
Copyright
Copyright © 1959 Weed Science Society of America 

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