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Relationship Between Herbicide Movement and Stump Sprouting

Published online by Cambridge University Press:  12 June 2017

O. A. Leonard  and
A. H. Murphy
A. H. Murphy
Affiliation:
Hopland Field Station
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Abstract

It was shown that less sprouting of blue oak (Quercus douglasii) and California black oak (Q. kelloggii) occurred when treated stumps were (a) cut 30 cm rather than 90 cm high, (b) treated at once after cutting rather than after 7 days, (c) treated with 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) amine rather than with 2,4-dichlorophenoxyacetic acid (2,4-D) amine, and (d) left uncovered rather than covered. The differences between treatments eventually disappeared because of the death of the sprouts, possibly due to the levels of herbicide used in making the treatments.

The downward movement of carboxyl C14-labeled 2,4-D and 2,4,5-T, 3-amino-1,2,4-triazole-5-C14, and C14-labeled urea in interior live oak (Q. wislizenii) stumps was studied. Rainfall, level of 2,4-D applied, and time interval all appeared to influence downward movement.

Type
Research Article
Information
Weeds , Volume 13 , Issue 1 , January 1965 , pp. 26 - 30
Copyright
Copyright © 1965 Weed Science Society of America 

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References

Literature Cited

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