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Crop Residues and Management of Annual Grass Weeds in Continuous No-Till Wheat (Triticum aestivum)

Published online by Cambridge University Press:  12 June 2017

Thanh H. Dao
Thanh H. Dao*
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., P.O. Box 1199, El Reno, OK 73036
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Abstract

Field and growth chamber experiments were conducted from 1983 to 1985 to determine the relationships between loss in plant productivity and plant residue-crop-weed density in no-till wheat (Triticum aestivum L.) and to document chemical management and cultivar options for such a cropping system. Untilled stubble left on the soil at rates of 0.5 and 3 t/ha reduced wheat density and grain yield in continuous winter wheat. Stem densities of cheat (Bromus secalinus L. # BROSE) and downy brome (B. tectorum L. # BROTE) in mulched treatments averaged about 682, 679, and 38 stems/m2 in 1983, 1984, and 1985, respectively. In the nonmulched treatment, weed density and standing dry matter ranged from 5 to 30 stems/m2 and 2 to 6 g/m2, respectively. Removal of residues eliminated key habitat characteristics required for the establishment of Bromus spp. Preemergence and early postemergence applications of BAY SMY 1500 [4-amino-6-(1,1-dimethylethyl)-3-(ethylthio)-1,2,4-triazin-5(4H)-one] at 2 kg/ha controlled both species of Bromus in no-till wheat. The herbicide treatment slightly delayed maturity of 10 wheat cultivars, but control of cheat and downy brome allowed nine cultivars to attain their yield potential, improving grain yield over that of untreated plots. ‘Vona’ wheat did not tolerate the herbicide and was susceptible after emergence. BAY SMY 1500 widens the spectrum of weed management and wheat cultivar options for an annual conservation production system of winter wheat.

Keywords

Conservation tillageBAY SMY 1500cultivar-herbicide interactionscrop-weed competitionBROSEBROTE
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 35 , Issue 3 , May 1987 , pp. 395 - 400
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

Literature Cited

1. Cleary, C. L. and Peeper, T. F. 1983. Effect of no-till systems on weed control and yields of continuous winter wheat (Triticum aestivum). Weed Sci. 31:813–818.Google Scholar
2. Dao, T. H. 1986. Sorption and mineralization of plant phenolic acids in the soil. Chapter 33 in Waller, G. R., ed. Allelochemicals: roles in agriculture, forestry, and ecology. Symp. Ser. No. 330, Am. Chem. Soc., Washington, DC.Google Scholar
3. Ghadiri, H., Wicks, G. A., Fenster, C. R., and Burnside, O. C. 1981. Control of weeds in winter wheat (Triticum aestivum) and untilled stubble with herbicides. Weed Sci. 29:65–70.Google Scholar
4. Hulbert, L. C. 1965. Ecological studies of Bromus tectorum and other annual bromegrasses. Ecol. Mongr. 25:181–183.Google Scholar
5. Hume, L. 1985. Crop losses in wheat (Triticum aestivum) as determined using weeded and nonweeded quadrats. Weed Sci. 33:734–740.Google Scholar
6. Lonkerd, W. E. and Dao, T. H. 1985. Effects of tillage on soil water under continuous wheat. Agron. Abstr.: 208.Google Scholar
7. Massee, T. W. 1976. Downy brome control in dryland winter wheat with stubble-mulch fallow and seeding management. Agron. J. 68:952–955.Google Scholar
8. Peeper, T. F. 1984. Chemical and biological control of downy brome (Bromus tectorum) in wheat and alfalfa in North America. Weed Sci. 32. (Suppl. 1):18–25.CrossRefGoogle Scholar
9. Runyan, T. J., McNeil, W. K., and Peeper, T. F. 1982. Differential tolerance of wheat (Triticum aestivum) cultivars to metribuzin. Weed Sci. 30:94–97.Google Scholar
10. Rydrych, D. I. 1974. Competition between winter wheat and downy brome. Weed Sci. 22:211–214.Google Scholar
11. Schroeder, J., Banks, P. A., and Nichols, R. L. 1985. Soft red winter wheat (Triticum aestivum) cultivar response to metribuzin. Weed Sci. 34:66–69.Google Scholar
12. Stahlman, P. W. 1984. Downy brome (Bromus tectorum) control with diclofop in winter wheat (Triticum aestivum). Weed Sci. 32:59–62.Google Scholar
13. Thill, D. C., Beck, K. G., and Callihan, R. H. 1984. The biology of downy brome (Bromus tectorum). Weed Sci. 32. (Suppl. 1):7–12.Google Scholar
14. Unger, P. W. and Jones, O. R. 1981. Effect of soil water content and a growing season straw mulch on grain sorghum. Soil Sci. Soc. Am. J. 45:129–134.Google Scholar
15. Wicks, G. A. 1984. Integrated systems for control and management of downy brome (Bromus tectorum) in cropland. Weed Sci. 32. (Suppl. 1):26–31.Google Scholar
16. Wicks, G. A., Burnside, O. C., and Fenster, C. R. 1971. Influence of soil type and depth of planting on downy brome seed. Weed Sci. 19:82–86.Google Scholar