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Postemergence Control of Annual Grasses and Corn (Zea mays) Tolerance Using DPX-79406

Published online by Cambridge University Press:  12 June 2017

Clarence J. Swanton ,
Kevin Chandler ,
Monica J. Elmes ,
Stephen D. Murphy  and
Glenn W. Anderson
Clarence J. Swanton
Affiliation:
Dep. Crop Sci., Univ. Guelph, Guelph. Ont., Canada NIG 2W1
Kevin Chandler
Affiliation:
Dep. Crop Sci., Univ. Guelph, Guelph. Ont., Canada NIG 2W1
Monica J. Elmes
Affiliation:
Dep. Crop Sci., Univ. Guelph, Guelph. Ont., Canada NIG 2W1
Stephen D. Murphy
Affiliation:
Dep. Crop Sci., Univ. Guelph, Guelph. Ont., Canada NIG 2W1
Glenn W. Anderson
Affiliation:
Dep. Crop Sci., Univ. Guelph, Guelph. Ont., Canada NIG 2W1
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Abstract

DPX-79406 was evaluated for POST annual grass weed control in both controlled environment and field experiments. In controlled environment experiments, green foxtail was most susceptible to DPX-79406; whereas yellow foxtail was least susceptible of the species evaluated. DPX-79406 at 12 g/ha completely controlled six leaf black-seeded proso millet, yellow foxtail, green foxtail, and barnyardgrass. In the field, DPX-79406 at 3.0 to 25.0 g/ha effectively controlled annual grass weeds without injury to three- to six-leaf corn. There was more variation in the effectiveness of DPX-79406 applied in the field. Early POST applications provided less weed control than the late application, especially for barnyardgrass, because of weeds emerging after application. As a result, higher doses were sometimes needed for effective control. In weed-free field trials at two sites in 1990 and 1991, corn tolerated doses up to 75 g/ha of DPX-79406 applied at the three- to six-leaf growth stage. However, doses as low as 18.8 g/ha applied at the six- to nine-leaf growth stage reduced grain yield. In 1991, corn tillering increases and height and yield reductions were related linearly to the dose of DPX-79406 applied during later growth stages. DPX-79406 should be applied early POST in order to avoid crop injury while providing effective weed control.

Keywords

DPX-79406, premix (1:1) nicosulfuron (DPX-V9360), 2-[[[[(4,6-dimethyoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N,N-dimethyl-3-pyridinecarboxamide, and rimsulfuron (DPX-E9636), N-[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]-3-(ethylsulfonyl)-2-pyridinesulfonamidebarnyardgrass, Echinochloa crus-galli (L.) Beauv. # ECHCGblack-seeded proso millet, Panicum miliaceum L. # PANMIcorn, Zea mays L. ‘Pioneer 3851’ and ‘Pioneer 3790’green foxtail, Setaria viridis (L.) Beauv. # SETVIyellow foxtail, Setaria glauca (L.) Beauv. # SETLUGrowth stageseed qualitytilleringweed controlyieldEchinochloa crus-galliPanicum capillarePanicum miliaceumSetaria glaucaSetaria viridisECHCGPANCAPANMISETLUSETVI
Type
Research
Information
Weed Technology , Volume 10 , Issue 2 , June 1996 , pp. 288 - 294
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

Literature Cited

1. Anonymous. 1995. Guide to weed control. Ontario Ministry of Agriculture, Food and Rural Affairs (Publ. 75.), Toronto, ON. 240 p.Google Scholar
2. Brown, H. M., 1990. Mode of action, crop selectivity, and relations of the sulfonylurea herbicides. Pestic. Sci. 29:263–281.CrossRefGoogle Scholar
3. Eberlein, C. V., Rosow, K. M., Geadelmann, J. L., and Openshaw, S. J. 1989. Differential tolerance of corn genotypes to DPX-M6316. Weed Sci. 37:651–657.Google Scholar
4. Ferreira, K. L., Baker, T. K., and Peeper, T. F. 1990. Factors influencing winter wheat (Triticum aestivum) injury from sulfonylurea herbicides. Weed Technol. 4:724–730.CrossRefGoogle Scholar
5. Fonne-Pfeister, R., Gaudin, J., Kreuz, K., Ramsteiner, K., and Ebert, E. 1990. Hydroxylation of primisulfuron by an inducible cytochrome P-450 dependent monooxygenase system from maize. Pestic. Biochem. Physiol. 37:165.Google Scholar
6. Foy, C. L., and Witt, H. J. Johnsongrass control with DPX-V9360 and CGA-136872 in corn (Zea mays) in Virginia. Weed Technol. 4:615–619.Google Scholar
7. Frear, D. S., Swanson, H. R., and Thalacker, F. W. 1991. Induced microsomal oxidation of diclofop, triasulfuron, chlorosulfuron, and linuron in wheat. Pestic. Biochem. Physiol. 41:274.Google Scholar
8. Kimura, F., Haga, T., Sakashita, N., Murai, S., and Fujikawa, K. 1989. SL-950, a novel sulfonylurea herbicide for corn. Proc. Brighton Crop Prot. Conf. 1:29–34.Google Scholar
9. Mekki, M., and Leroux, G. D. 1994. Activity of nicosulfuron, rimsulfuron, and their mixture on field corn (Zea mays), soybean (Glycine max), and seven weed species. Weed Technol. 8:436–440.CrossRefGoogle Scholar
10. Obrigawitch, T. T., Kenyon, W. H., and Kuratle, H. 1990. Effect of application timing on rhizome johnsongrass (Sorghum halpense) control with DPX-V9360. Weed Sci. 38:45–49.Google Scholar
11. Palm, H. L., Laing, P. H., Fuesler, T. P., Leek, G. L., Strachan, S. D., and Wittenbach, V. A. 1989. New low-rate sulfonylureas for post-emergence weed control in corn. Proc. Brighton Crop Prot. Conf. 1:23–28.Google Scholar
12. Quinn, N. W., and Laflen, J. M. 1983. Characteristics of raindrop through fall under corn canopy. Trans. Am. Soc. Agric. Eng. 26:1445–1450.CrossRefGoogle Scholar
13. Reidy, M. E., 1992. The response of quackgrass to chemical control with DPX-79406 and to desiccation. , Univ. Guelph, Guelph, ON. 79 p.Google Scholar
14. Reidy, M. E., and Swanton, C. J. 1994. Postemergence control of quackgrass (Elytrigia repens (L.) Nevski) with DPX-79406. Can. J. Plant Sci. 74:375–381.Google Scholar
15. Steiner, J. L., Kanesmasu, E. T., and Clark, R. N. 1983. Spray losses and partitioning of water under a center pivot sprinkler system. Trans. Am. Soc. Agric. Eng. 26:1128–1134.Google Scholar