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Ecological Effects of Barnyardgrass on Soybeans in a Greenhouse

Published online by Cambridge University Press:  12 June 2017

M.A. Maun
M.A. Maun*
Affiliation:
Dep. Plant Sci., Univ. of Western Ontario, London, Ont. N6A 3B7. Canada
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Abstract

Greenhouse studies were conducted to study the competition between soybeans [Glycine max (L.) Merr. ‘Vansoy’] and barnyardgrass [Echinochloa crus-galli (L.) Beauv.]. The competition was initiated or terminated when soybeans were 2, 3, 4, 5, 6, 7, 8, 9, and 10 weeks old. The reproductive efficiency of soybeans was not lowered by 4 to 7 weeks of competition after planting of soybeans. Competition between the two species for the entire growing season resulted in a significant decrease in plant height of soybeans. The total dry matter per plant was negatively correlated with an increase in the length of competition. Competition during the first 5 to 9 weeks of the life cycle of soybeans was more deleterious to soybean productivity than the last 5 to 9 weeks of its life cycle.

Type
Research Article
Information
Weed Science , Volume 25 , Issue 2 , March 1977 , pp. 128 - 131
Copyright
Copyright © 1977 by the Weed Science Society of America 

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References

Literature Cited

1. Alex, J.F. 1964. Weeds of tomato and corn fields in two regions of Ontario. Weed Res. 4:308–318.CrossRefGoogle Scholar
2. Barrentine, W.L. 1974. Common cocklebur competition in soybeans. Weed Sci. 22:600–603.CrossRefGoogle Scholar
3. Burnside, O.C. and Wicks, G.A. 1969. Influence of weed competition on sorghum growth. Weed Sci. 17:332–334.CrossRefGoogle Scholar
4. Chancellor, R.J. and Peters, N.C.B. 1974. The time of onset of competition between wild oats [Avena fatua L.] and spring cereals. Weed Res. 14:197–202.CrossRefGoogle Scholar
5. Dawson, J.H. 1964. Competition between irrigated field beans and annual weeds. Weeds 12:206–208.CrossRefGoogle Scholar
6. Eaton, B.J., Feltner, K.C., and Russ, O.G. 1973. Venice mallow competition in soybeans. Weed Sci. 21:89–94.CrossRefGoogle Scholar
7. Harris, W. and Thomas, V.J. 1973. Competition among pasture plants. N. Z. J. Agric. Res. 16:49–58.CrossRefGoogle Scholar
8. Hill, L. and Santelmann, P.W. 1969. Competitive effects of annual weeds on Spanish peanuts. Weed Sci. 17:1–2.CrossRefGoogle Scholar
9. Knake, E.L. and Slife, F.W. 1962. Competition of Setaria faberii with corn and soybeans. Weeds 10:26–29.CrossRefGoogle Scholar
10. Knake, E.L. and Slife, F.W. 1965. Giant foxtail seeded at various times in corn and soybeans. Weeds 13:331–334.CrossRefGoogle Scholar
11. Krebs, C.J. 1972. Ecology. Harper and Row Publishers, New York. 694 pp.Google Scholar
12. McWhorter, C.G. 1972. Competition of johnsongrass and cocklebur with six soybean varieties. Weed Sci. 20:56–59.CrossRefGoogle Scholar
13. Moolani, M.K., Knake, E.L., and Slife, F.W. 1964. Competition of smooth pigweed with corn and soybeans. Weeds 12:126–128.CrossRefGoogle Scholar
14. Muenscher, W.C. 1960. Weeds. McMillan Co., New York. 560 pp.Google Scholar
15. Rydrych, D.J. 1974. Competition between winter wheat and downy brome. Weed Sci. 22:211–214.CrossRefGoogle Scholar
16. Smith, R.J. Jr. 1974. Competition of barnyardgrass with rice cultivars. Weed Sci. 22:423–426.CrossRefGoogle Scholar
17. Staniforth, D.W. 1962. Response of soybean varieties to weed competition. Agron. J. 54:11–13.CrossRefGoogle Scholar
18. Staniforth, D.W. 1965. Competitive effects of three foxtail species on soybeans. Weeds 13:191–193.CrossRefGoogle Scholar
19. Vengris, J., Colby, W.G., and Drake, M. 1955. Plant nutrient competition between weeds and corn. Agron. J. 47:213–216.CrossRefGoogle Scholar
20. Wax, L.M. and Pendleton, J.W. 1968. Effects of row spacing on soybeans. Weed Sci. 16:462–465.CrossRefGoogle Scholar
21. Went, F.W. 1973. Competition among plants. Proc. Nat. Acad. Sci. U.S.A., 70:585–590.CrossRefGoogle ScholarPubMed
22. Wicks, G.A., Johnston, D.N., Nuland, D.S., and Kinbacher, E.J. 1973. Competition between annual weeds and sweet Spanish onions. Weed Sci. 21:436–439.CrossRefGoogle Scholar
23. Willey, R.W. and Heath, S.B. 1969. The quantitative relationships between plant populations and crop yield. Adv. Agron. 21:281–322.CrossRefGoogle Scholar