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Interference of Pale Smartweed (Polygonum lapathifolium) with Cabbage (Brassica oleracea)

Published online by Cambridge University Press:  12 June 2017

Liang-Chi Horng*
Affiliation:
Plant Protection Center, Taiwan

Abstract

The competitive effects of pale smartweed (Polygonum lapathifolium L.) were studied on cabbage (Brassica oleracea L. ‘K-Y’) which was transplanted into rice (Oryza sativa L.) fields either 3 to 12 days before or 5 days after rice was harvested. Competitive effects were determined at weekly intervals from the time beds were formed around the cabbage at 5 days after rice harvest. Where cabbage was transplanted before rice harvest, at a time before pale smartweed germination, cabbage yields were reduced when weeds were allowed to grow for more than 4 weeks from the time the beds were formed. Where cabbage was transplanted at 5 days after the rice was harvested at a time when parts of pale smartweed had emerged, cabbage yields were reduced when weeds were allowed to grow for only 2 or more weeks after the beds were formed. Also, where weeds were removed at the beginning but allowed to grow at a later date, yield was reduced when cabbage was not kept weed-free for a minimum of 4 weeks.

Type
Research Article
Copyright
Copyright © 1980 by the Weed Science Society of America 

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References

Literature Cited

1. Buchanan, G. A. and Burns, E. R. 1970. Influence of weed competition on cotton. Weed Sci. 18:149154.Google Scholar
2. Buchanan, G. A. and McLaughlin, R. D. 1975. Influence of nitrogen on weed competition in cotton. Weed Sci. 23:324328.CrossRefGoogle Scholar
3. Buchanan, G. A., Hauser, E. W., Ethredge, W. J., and Cecil, S. R. 1976. Competition of Florida beggarweed and sicklepod with peanuts. II. Effects of cultivation, weeds and SADH. Weed Sci. 24:2939.Google Scholar
4. Chang, W. L. 1970. The effect of weeds on rice paddy. J. Taiwan Agric. Res. 19:1831.Google Scholar
5. Dawson, J. H. 1965. Competition between irrigated sugar beets and annual weeds. Weeds 13:245249.Google Scholar
6. Dawson, J. H. 1977. Competition of late-emerging weeds with sugar beets. Weed Sci. 25:168170.Google Scholar
7. Eaton, B. J., Russ, O. G., and Feltner, K. C. 1976. Competition of velvetleaf, prickly sida and Venice mallow in soybeans. Weed Sci. 24:224228.Google Scholar
8. Hauser, E. W., Buchanan, G. A., and Ethredge, W. J. 1975. Competition of Florida beggarweed and sicklepod with peanuts. I. Effects of period of weed-free maintenance and weed competition. Weed Sci. 23:368372.CrossRefGoogle Scholar
9. Hill, L. V. and Santelmann, P. W. 1968. Competitive effects of annual weeds on Spinach peanuts. Weed Sci. 27:12.Google Scholar
10. Horng, L. C. 1976. Investigation of weed flora on paddy fields in the Taichung district. Plant Prot. Bull. 18:268275.Google Scholar
11. Kassasian, L. and Seeyava, J. 1969. Critical period for weed competition. PANS 15:208212.Google Scholar
12. Keeley, D. E. and Thullen, R. J. 1975. Influence of yellow nutsedge competition on furrow-irrigated cotton. Weed Sci. 23:171175.Google Scholar
13. Lawson, H. M. 1972. Weed competition in transplanted spring cabbage. Weed Res. 12:254267.CrossRefGoogle Scholar
14. Okafor, L. I. and De Datta, S. K. 1976. Competition between upland rice and purple nutsedge for nitrogen, moisture and light. Weed Sci. 24:4346.CrossRefGoogle Scholar
15. Roberts, H. A., Hewson, R. T., and Ricketts, M. E. 1977. Weed competition in drilled summer lettuce. Hort. Res. 17:3945.Google Scholar
16. Rogers, N. K., Buchanan, G. A., and Johnson, W. C. 1976. Influence of row spacing on weed competition with cotton. Weed Sci. 24:410413.Google Scholar
17. Swain, D. J., Nott, M. J., and Trounce, R. B. 1975. Competition between Cyperus difformis and rice. The effect of time of weed removal. Weed Res. 15:149152.Google Scholar
18. William, R. D. and Warren, G. F. 1975. Competition between purple nutsedge and vegetables. Weed Sci. 23.317323.Google Scholar