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Picloram Enhances 2,4-D Movement in Field Bindweed

Published online by Cambridge University Press:  12 June 2017

Chuma S. O. Agbakoba  and
J. R. Goodin
Chuma S. O. Agbakoba
Affiliation:
Department of Agronomy, University of California, Riverside
J. R. Goodin
Affiliation:
Department of Agronomy, University of California, Riverside, California
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Abstract

Field bindweed (Convolvulus arvensis L.) was sprayed with a mixture of (2,4-dichlorophenoxy)acetic acid (2,4-D) and 4-amino-3,5,6-trichloropicolinic acid (picloram). A mixture of picloram and 2,4-D each at 0.01 lb and 0.001 lb/A killed tops of plants faster than 2,4-D alone or picloram alone at the same rates. Higher rates of 1 lb/A picloram plus 1 lb/A 2,4-D and 0.1 lb/A picloram plus 0.1 lb/A 2,4-D were not consistently synergistic or antagonistic. The percent of plants which produced new growth were 0 for picloram alone at 1 lb/A, 20 for a mixture of 2,4-D and picloram each at 1 lb/A, and 40 for 2,4-D alone at 1 lb/A. Other rates of 0.1 lb/A, 0.01 lb/A, and 0.001 lb/A did not control regrowth of field bindweed. Application of unlabeled picloram simultaneously with 14C-2,4-D increased translocation of 14C-2,4-D, but the reverse was not true.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 1 , January 1970 , pp. 19 - 21
Copyright
Copyright © 1970 Weed Science Society of America 

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References

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