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Foliar Penetration of Herbicides—Review and Present Status

Published online by Cambridge University Press:  12 June 2017

H. B. Currier  and
C. D. Dybing
H. B. Currier
Affiliation:
Department of Botany, University of California, Davis
C. D. Dybing
Affiliation:
Department of Botany, University of California, Davis
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Systemic herbicides applied to leaves must move from the leaf surface into uninjured phloem in sufficient quantity to be translocated throughout the plant. Contact herbicides must at least enter the leaf. Leaves of terrestrial plants are adapted to exchange of gases —water vapor, CO2, O2—but are not adapted to absorb foreign solutes in applied solutions and to translocate them systemically; insectivorous species and some water plants may be exceptions. Failure of herbicidal effectiveness often may be due to lack of penetration. However, selectivity towards herbicides is not clearly related to differential absorption (5, 82, 172, 176).

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Research Article
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Weeds , Volume 7 , Issue 2 , April 1959 , pp. 195 - 213
Copyright
Copyright © 1959 Weed Science Society of America 

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References

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