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Radioisotopic and Gas Chromatographic Methods for Measuring Absorption and Translocation of 2,4,5-T by Mesquite

Published online by Cambridge University Press:  12 June 2017

Howard L. Morton ,
F. S. Davis  and
M. G. Merkle
Howard L. Morton
Affiliation:
Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture, College Station, Texas
F. S. Davis
Affiliation:
Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture, College Station, Texas
M. G. Merkle
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, College Station, Texas. Presently Associate Professor, Department of Soil and Crop Sciences, Texas A&M University, College Station
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Abstract

The uptake and transport of carboxyl-labeled and unlabeled butoxyethyl esters and ammonium salts of 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) by honey mesquite (Prosopis juliflora (Swartz) DC, var. glandulosa (Torr.) Cockerell) leaves were compared as measured by liquid scintillation counting and gas chromatography. Absorption of 2,4,5-T was determined by assaying leaf-rinsing solutions and extracts of treated leaves. Transport of 2,4,5-T was measured by determining amounts of 2,4,5-T found in stem tissue. The methods of analysis gave comparable results when extraction, cleanup, and analytical procedures were identical. When cleanup and methylation procedures were eliminated for the radioisotopic analyses, radioisotopic analyses gave significantly higher values for extracts of treated leaves than did gas chromatographic analyses. Larger amounts of 2,4,5-T were recovered from leaves treated with the butoxyethyl esters of 2,4,5-T than with ammonium salts.

Type
Research Article
Information
Weed Science , Volume 16 , Issue 1 , January 1968 , pp. 88 - 91
Copyright
Copyright © 1968 Weed Science Society of America 

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References

Literature Cited

1. Crafts, A. S. 1960. Evidence for hydrolysis of esters of 2,4-D during absorption by plants. Weeds 8:19–25.Google Scholar
2. Dalrymple, A. V. and Basler, E. 1963. Seasonal variation in absorption and translocation of 2,4,5-trichlorophenoxyacetic acid and respiration rates in blackjack oak. Weeds 6:179–186.Google Scholar
3. Davis, F. S., Merkle, M. G., and Bovey, R. W. 1967. Effect of moisture stress on the absorption and transport of herbicides in woody plants. Bot. Gaz. (In Press).Google Scholar
4. Hull, H. M. 1956. Studies on herbicidal absorption and translocation in velvet mesquite seedlings. Weeds 4:22–42.CrossRefGoogle Scholar
5. Klingman, D. L., Gordon, Chester H., Yip, George, and Burchfield, H. P. 1966. Residues in the forage and in milk from cows grazing forage treated with esters of 2,4-D. Weeds 14:164–167.Google Scholar
6. Merkle, M. G. and Davis, F. S. 1966. The use of gas chromatography in determining the translocation of picloram and 2,4,5-T. Proc. SWC 19:557–562.Google Scholar
7. Merkle, M. G., Bovey, R. W., and Hall, R. 1966. The determination of picloram residues in soil using gas chromatography. Weeds 14:161–164.Google Scholar
8. Morton, H. L. 1966. Influence of temperature and humidity on foliar absorption, translocation, and metabolism of 2,4,5-T by mesquite seedlings. Weeds 14:136–140.Google Scholar