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Influence of 2,4-D and MCPA Formulations and Oil on Diclofop Phytotoxicity

Published online by Cambridge University Press:  12 June 2017

Greg R. Gillespie  and
John D. Nalewaja
Greg R. Gillespie
Affiliation:
CIBA-GEIGY Corp., Greensboro, NC
John D. Nalewaja
Affiliation:
Agron. Dep., North Dakota State Univ., Fargo
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Abstract

Field experiments were conducted during 1984 and 1985 to determine the influence of 2,4-D and MCPA amine and ester formulations on control of foxtail millet with diclofop. Foxtail millet control increased as the diclofop rate increased from 0.6 to 1.7 kg ai/ha whether diclofop was applied alone or with 2,4-D or MCPA amine and ester formulations; however, foxtail millet control was lower when diclofop was applied with 2,4-D or MCPA amine and ester formulations compared to diclofop applied alone. MCPA ester, MCPA amine, 2,4-D ester, or 2,4-D amine at 0.14 kg ai/ha added to a diclofop spray mixture reduced foxtail millet control 8, 15, 20, and 30% compared to diclofop applied alone, averaged over diclofop rates of 0.6, 0.8, 1.1, 1.4, and 1.7 kg/ha. Adding a petroleum oil to diclofop increased foxtail millet control with diclofop at 0.6 kg/ha but not at 0.8 kg/ha. The petroleum oil additive did not overcome the antagonism of foxtail millet control when diclofop at 0.6 kg/ha was applied with 2,4-D or MCPA amine and ester formulations. The amount of 14C-diclofop absorbed by oats was greater when diclofop was applied with the ester formulations of 2,4-D or MCPA compared to the amine formulations. Either once-refined sunflower oil or sunflower oil methyl ester applied with 14C-diclofop increased the amount of 14C absorbed and translocated in oat plants compared to 14C-diclofop applied alone.

Keywords

Diclofop, (±)-2-[4-(2,4-dichlorophenoxy)phenoxy]propanoic acidMCPA, (4-chloro-2-methylphenoxy)acetic acid2,4-D, (2,4-dichlorophenoxy)acetic acidfoxtail millet, Setaria italica L. ‘Siberian’♯3 SETIToats, Avena sativa L. ‘Lyon’sunflower, Helianthus annuus L.Adjuvantantagonismherbicideherbicide mixturestank mixtures
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 37 , Issue 3 , May 1989 , pp. 380 - 384
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

Literature Cited

1. Behrens, R., Elakkad, M., and Smith, L. J. 1974. Wild oat control in wheat and barley. Res. Rep. North Cent. Weed Control Conf. 32:89–94.Google Scholar
2. Boldt, P. F. and Putnam, A. R. 1980. Selectivity mechanisms for foliar applications of diclofop-methyl. I. Retention, translocation, and volatility. Weed Sci. 26:474–477.CrossRefGoogle Scholar
3. Chow, P.N.P. 1978. Selectivity and site of action in relation to field performance of diclofop. Weed Sci. 26:352–358.Google Scholar
4. Friesen, H. A., O'Sullivan, P. A., and Vanden Born, W. H.: 1976. HOE 23408, a new selective herbicide for wild oats and green foxtail control in wheat and barley. Can. J. Plant Sci. 56:567–578.Google Scholar
5. Gillespie, G. R. and Miller, S. D. 1983. Absorption, translocation, and metabolism of diclofop by sunflower. Weed Sci. 31:658–663.Google Scholar
6. Gillespie, G. R. and Miller, S. D. 1984. Diclofop interaction with MCPA and dicamba in sunflower. Proc. West. Soc. Weed Sci. 37:174–183.Google Scholar
7. Miller, S. D. and Nalewaja, J. D. 1974. HOE-23408 for postemergence wild oat and yellow foxtail control. Proc. North Cent. Weed Control Conf. 29:38–39.Google Scholar
8. Miller, S. D. and Nalewaja, J. D. 1980. Diclofop (Hoelon) for wild oat and green foxtail control. N. D. Farm Res. 38(2): 19–22.Google Scholar
9. Nalewaja, J. D., Manthey, F. A., Szeleniak, E. F., and Peterson, D. E. 1986. Methylated seed oils with herbicides. Proc. North Cent. Weed Control Conf. 41:14.Google Scholar
10. Olson, W. A. and Nalewaja, J. D. 1981. Antagonistic effects of MCPA on wild oat control with diclofop. Weed Sci. 29:566–571.Google Scholar
11. Olson, W. A. and Nalewaja, J. D. 1982. Effect of MCPA on 14C-diclofop uptake and translocation. Weed Sci. 30:59–63.Google Scholar
12. O'Sullivan, P. A., Friesen, H. A., and Vanden Born, W. H. 1976. Influence of herbicides for broad-leaved weeds and adjuvants with diclofop-methyl on wild oat control. Can. J. Plant Sci. 57:117–125.Google Scholar
13. Quershi, F. A. and Vanden Born, W. H. 1979. Interaction of diclofop-methyl and MCPA on wild oats. Weed Sci. 27:202–205.Google Scholar
14. Shimabukuro, R. H., Walsh, W. C., and Hoerauf, R. A. 1978. Metabolism and selectivity of diclofop-methyl in wild oat and wheat. J. Agric. Food Chem. 27:615–623.Google Scholar
15. Todd, B. G. and Stobbe, E. H. 1977. Selectivity of diclofop-methyl among wheat, barley, wild oat, and green foxtail. Weed Sci. 25:382–385.Google Scholar
16. Todd, B. G. and Stobbe, E. H. 1980. The basis of the antagonistic effect of 2,4-D on diclofop-methyl toxicity. Weed Sci. 28:371–377.Google Scholar
17. West, L. D., Dawson, J. H., and Appleby, A. P. 1980. Factors influencing barnyardgrass control with diclofop. Weed Sci. 28:366–371.Google Scholar