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Effect of Imazaquin and Chlorimuron Plus Metribuzin on Sicklepod (Cassia obtusifolia) Interference in Soybean (Glycine max)

Published online by Cambridge University Press:  12 June 2017

David R. Shaw ,
Marshall B. Wixson  and
Clyde A. Smith
David R. Shaw
Affiliation:
Dep. Plant Pathol. Weed Sci., Miss. State Univ., Mississippi State, MS 39762
Marshall B. Wixson
Affiliation:
Dep. Plant Pathol. Weed Sci., Miss. State Univ., Mississippi State, MS 39762
Clyde A. Smith
Affiliation:
Dep. Plant Pathol. Weed Sci., Miss. State Univ., Mississippi State, MS 39762
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Abstract

Three experiments evaluated sicklepod interference with soybean with and without preplant incorporated applications of chlorimuron plus metribuzin or imazaquin. Sicklepod density, weed-free period, and weedy period were examined. In the absence of herbicides, soybean seed yield was reduced with 2 sicklepod plants row m-1, whereas 8 plants row m-1 were necessary to reduce yield when herbicides were used. Herbicide use also increased soybean yield at higher sicklepod densities. Chlorimuron plus metribuzin reduced sicklepod dry matter at 8 plants row m-1. To maintain soybean yield, a weed-free period of 4 wk after emergence was required, regardless of treatment. Both herbicide treatments resulted in increased soybean yield at the zero and two wk weed-free periods; however, they did not affect soybean yield when the weed-free period was 4 wk or more. Imazaquin reduced sicklepod density when plots were left weedy full-season, and further reductions were noted with chlorimuron plus metribuzin. A sicklepod weedy interval of 8 wk reduced soybean yield when untreated, but either herbicide treatment extended that interval to 16 wk.

Keywords

Chlorimuron, 2-[[[[(4-chloro-6-methoxy-2-pyrimidinylaminocarbonyl]amino]sulfonyl]benzpic acid, imazaquin, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acidmetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-onesicklepod, Cassia obtusifolia L. ♯ CASOBsoybean, Glycine max (L.) Merr.Weed-free periodweedy perioddensitycompetitionCASOB
Type
Research
Information
Weed Technology , Volume 5 , Issue 1 , March 1991 , pp. 206 - 210
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

Literature Cited

1. Adcock, T. E., Krueger, W. A., Rhodes, G. N. Jr., and Ashburn, E. L. 1988. The effects of selected herbicides and cropping systems on sicklepod. Proc. South. Weed Sci. Soc. 41:286.Google Scholar
2. Bridges, D. C., and Walker, R. H. 1985. Influence of weed management and cropping systems on sicklepod seed in soil. Weed Sci. 33: 800–804.Google Scholar
3. Buchanan, G. A., Crowley, R. H., Street, J. E., and McGuire, J. A. 1980. Competition of sicklepod (Cassia obtusifolia) and redroot pigweed (Amaranthus retroflexus) with cotton (Gossypium hirsutism). Weed Sci. 28:258–262.Google Scholar
4. Elmore, C. D. 1986. Weed survey–southern states. South. Weed Sci. Soc. Res. Rep. 39:136.Google Scholar
5. Glaze, N. C., and Mullinix, B. G. Jr. 1984. Competitive effects of sicklepod on lima beans. Weed Sci. 32:1–3.Google Scholar
6. Hauser, W. E., Buchanan, G. A., Nichols, R. L., and Patterson, R. M. 1982. Effects of Florida beggarweed (Desmodium tortuosum) and sicklepod (Cassia obtusifolia) on peanut (Arachis hypogaea) yield. Weed Sci. 30:602–604.Google Scholar
7. McWhorter, C. G., and Sciumbato, G. L. 1988. Effects of row spacing, benomyl, and duration of sicklepod (Cassia obtusifolia) interference on soybean (Glycine max) yields. Weed Sci. 36:254–259.Google Scholar
8. Shaw, D. R. 1987. Sicklepod control in soybeans with Canopy, Scepter, and Classic. Miss. Agric. For. Exp. Stn. Res. Rep. 12, No. 20, 4 p.Google Scholar
9. Shaw, D. R., Snipes, C. E., and Whatley, L. L. 1986. Chemical control of sicklepod in soybeans. Miss. Agric. For. Exp. Stn. Res. Rep. 11, No. 12, 4 p.Google Scholar
10. Shaw, D. R., and Coats, G. E. 1988. Herbicides and cultivation for sicklepod, Cassia obtusifolia, control in soybeans, Glycine max . Weed Technol. 2:187–190.Google Scholar
11. Street, J. E., Buchanan, G. A., Crowley, R. H., and McGuire, J. A. 1981. Influence of cotton (Gossypium hirsutum) densities on competitiveness of pigweed (Amaranthus spp.) and sicklepod (Cassia obtusifolia). Weed Sci. 29:253–256.Google Scholar
12. Teem, D. H., Hoveland, C. S., and Buchanan, G. A. 1980. Sicklepod (Cassia obtusifolia) and coffee senna (Cassia occidentalis): geographic distribution, germination, and emergence. Weed Sci. 28:551–556.Google Scholar
13. Thurlow, D. L., and Buchanan, G. A. 1972. Competition of sicklepod with soybeans. Weed Sci. 20:379–384.Google Scholar
14. Walker, R. H., Patterson, M. G., Hauser, E., Isenhour, D. J., Todd, J. W., and Buchanan, G. A. 1984. Effects of insecticide, weed-free period, and row spacing on soybean (Glycine max) and sicklepod (Cassia obtusifolia) growth. Weed Sci. 32:702–706.Google Scholar