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Effect of Paraquat and 2,4,5-T on the Uptake and Transport of Picloram in Woody Plants

Published online by Cambridge University Press:  12 June 2017

F. S. Davis ,
R. W. Bovey  and
M. G. Merkle
R. W. Bovey
Affiliation:
Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture
M. G. Merkle
Affiliation:
Dept. of Soil and Crop Sciences, Texas A & M University, College Station, Texas
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Abstract

We studied the uptake and transport of 4-amino-3,5,6-trichloropicolinic acid (picloram) and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) alone and in combination and in the presence of 1,1′-dimethyl-4,4′-bipyridinium salt (paraquat) by honey mesquite (Prosopis juliflora (Swartz) DC. var. glandulosa (Torr.) Cockerell), huisache (Acacia farnesiana L. Willd., yaupon (Ilex vomitoria Ait.), and bean (Phaseolus vulgaris L.). Paraquat reduced transport of picloram by mesquite, huisache, and bean. Paraquat increased uptake of picloram by yaupon but did not affect transport. The uptake and transport of 2,4,5-T by mesquite decreased in the presence of picloram, but the uptake and transport of picloram increased in the presence of 2,4,5-T. Increasing ratios of 2,4,5-T:picloram up to 16:1 continued to increased uptake and transport of picloram; the inverse effect occurred for 2,4,5-T when picloram:2,4,5-T ratios were increased.

Type
Research Article
Information
Weed Science , Volume 16 , Issue 3 , July 1968 , pp. 336 - 339
Copyright
Copyright © Weed Science Society of America 

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References

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