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The Decomposition of Amitrole in California Soils

Published online by Cambridge University Press:  12 June 2017

B. E. Day ,
L. S. Jordan  and
R. T. Hendrixson
B. E. Day
Affiliation:
Dept. of Hort. Univ. of California Citrus Exp. Sta.
L. S. Jordan
Affiliation:
Dept. of Hort. Univ. of California Citrus Exp. Sta.
R. T. Hendrixson
Affiliation:
Dept. of Hort. Univ. of California Citrus Exp. Sta.
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Extract

Citrus and avocado trees have occasionally been injured following use of 3–amino–1,2,4–triazole (amitrole) at rates of 12 or more lb/A for control of perennial weeds. The distribution of tree injury relative to sprayed areas as well as the known low volatility of amitrole has indicated that tree injury was not due to volatility. The initial occurrence of symptoms on sucker growth in the interior and on the top foliage rather than lower exterior foliage of the trees would seem to eliminate spray drift as a possible cause. This injury has appeared to be due to spray residues being leached into the soil and taken up by the roots of the trees.

Type
Research Article
Information
Weeds , Volume 9 , Issue 3 , July 1961 , pp. 443 - 456
Copyright
Copyright © 1961 Weed Science Society of America 

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References

Literature Cited

1. Day, B. E., Johnson, E., and Dewlen, J. L. Volatility of herbicides under field conditions. Hilgardia 28:255–267. 1959.Google Scholar
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