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Foliar Uptake and Transport of 2,4-D and Picloram by Drummond's Goldenweed (Isocoma drummondii)

Published online by Cambridge University Press:  12 June 2017

H. S. Mayeux Jr.
Affiliation:
U.S. Dep. Agric., Sci. Ed. Admin., Agric. Res., Temple, TX 76501
C.J. Scifres
Affiliation:
Dep. Range Sci., Texas Agric. Exp. Stn., College Station, TX 77843

Abstract

Detached leaves of Drummond's goldenweed [Isocoma drummondii (T. & G.) Greene] absorbed the potassium salt of 2,4-D [(2,4-dichlorophenoxy)acetic acid] from aqueous solutions more slowly than did sunflower (Helianthus annuus L.), and both species absorbed less of the potassium salt of picloram (4-amino-3,5,6-trichloropicolinic acid) than 2,4-D. However, there was no difference in absorption of the herbicides by Drummond's goldenweed leaves after 6 h of exposure to solutions containing 0.5% (v/v) surfactant. Attached Drummond's goldenweed leaves absorbed about 50% of available 2,4-D (diethylamine) and 25% of available picloram (potassium salt) within 5 days after spraying in the field during July or November. Herbicide accumulation in Drummond's goldenweed taproots after spray applications was generally slow, regardless of season, but translocation to taproots was substantially greater after application in November than after treatment in March or July. Accumulation of picloram in taproots was faster and more extensive than accumulation of 2,4-D. However, based on mortality at 6 months after treatment, both herbicides were translocated in quantities adequate for control. The greater effectiveness of picloram, despite its low foliar uptake, than 2,4-D is attributed to its greater mobility and root uptake in Drummond's goldenweed after broadcast sprays.

Type
Research Article
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

1. Baur, J. R., Bovey, R. W., Baker, R. D., and Riley, I. 1971. Absorption and penetration of picloram and 2,4,5-T into detached live oak leaves. Weed Sci. 19:138141.CrossRefGoogle Scholar
2. Baur, J. R., Bovey, R. W., and Smith, J. D. 1969. Herbicide concentrations in live oak tissues treated with mixtures of picloram and 2,4,5-T. Weed Sci. 17:567570.CrossRefGoogle Scholar
3. Bovey, R. W. and Diaz-Colon, J. D. 1969. Effect of simulated rainfall on herbicide performance. Weed Sci. 17:154157.Google Scholar
4. Bovey, R. W., Davis, F. S., and Merkle, M. G. 1967. Distribution of picloram in huisache after foliar and soil application. Weeds 15: 245249.Google Scholar
5. Davis, F. S., Bovey, R. W., and Merkle, M. G. 1968. Effects of paraquat and 2,4,5-T on the uptake and transport of picloram in woody plants. Weed Sci. 16:336339.Google Scholar
6. Davis, F. S., Merkle, M. G., and Bovey, R. W. 1968. Effect of moisture stress on the absorption and transport of herbicides in woody plants. Bot. Gaz. 129:183189.CrossRefGoogle Scholar
7. Donart, G. B. 1969. Carbohydrate reserves of six mountain range plants as related to growth. J. Range Manage. 22:411415.CrossRefGoogle Scholar
8. Fang, S. C. 1958. Absorption, translocation, and metabolism of 2,4-D-1-C14 in pea and tomato plants. Weeds 6:179186.Google Scholar
9. Hagin, R. D. and Linscott, D. L. 1965. Determination of 4-(2,4-dichlorophenoxy)-butyric acid (2,4-DB) and 2,4-dichlorophenoxyacetic acid (2,4-D) in forage plants. J. Agric. Food Chem. 13:123125.CrossRefGoogle Scholar
10. Kane, J. W. 1967. Monthly reservoir evaporation rates for Texas, 1940 through 1965. Tex. Water Dev. Board Rep. 64. 111 pp.Google Scholar
11. Ketchersid, M. L., Fletchall, O. H., Santelmann, P. W., and Merkle, M. G. 1970. Residues in sorghum treated with the isooctyl ester of 2,4-D. Pestic. Monit. J. 4:111113.Google Scholar
12. Martin, H., and Worthing, C. R. 1974. Pesticide manual. Br. Crop Prot. Council, London. 565 pp.Google Scholar
13. Mayeux, H. S. Jr., Drawe, D. L., and Scifres, C. J. 1979. Control of common goldenweed with herbicides and associated forage release. J. Range Manage. 32:271274.CrossRefGoogle Scholar
14. Mayeux, H. S. Jr. and Scifres, C. J. 1978. Goldenweeds – new perennial range weed problems. Rangeman's J. 5:9193.Google Scholar
15. Mayeux, H. S. Jr. and Scifres, C. J. 1980. Drummond's goldenweed and its control with herbicides. J. Range Manage. (In press).Google Scholar
16. Mayeux, H. S. Jr., Scifres, C. J., and Crane, R. A. 1980. Ericameria austrotexana and associated range forage responses to herbicides. Weed Sci. 28:602606.Google Scholar
17. Mayeux, H. S. Jr., Scifres, C. J., and Meyer, R. E. 1979. Some factors affecting the response of spiny aster to herbicide sprays. Tex. Agric. Exp. Stn. Bull. 1197. 16 pp.Google Scholar
18. McCall, H. G., Scifres, C. J., and Merkle, M. G. 1974. Influence of foam adjuvants on activity of selected herbicides. Weed Sci. 22:384388.Google Scholar
19. McConnell, B. R. and Garrison, G. A. 1966. Seasonal variations of available carbohydrates in bitterbrush. J. Wildl. Manage. 30: 168172.Google Scholar
20. Merkle, M. G., Bovey, R. W., and Hall, R. 1966. The determination of picloram residues in soil using gas chromatography. Weeds 14:161164.CrossRefGoogle Scholar
21. Richardson, R. G. 1975. Foliar penetration and translocation of 2,4,5-T in blackberry (Rubus procerus P.J. Muell.). Weed Res. 15:3338.Google Scholar
22. Scifres, C. J., Baur, J. R., and Bovey, R. W. 1973. Absorption of 2,4,5-T applied in various carriers to honey mesquite. Weed Sci. 21:9496.Google Scholar
23. Steel, R. G. D. and Torrie, J. H. 1960. Principles and Procedures of Statistics. McGraw-Hill Book Co., New York, London, and Toronto. 481 pp.Google Scholar