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Competition of Bearded Sprangletop (Leptochloa fascicularis) with Rice (Oryza sativa)

Published online by Cambridge University Press:  12 June 2017

Roy J. Smith Jr.
Roy J. Smith Jr.*
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Stuttgart, AR 72160
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Abstract

Yields of drill-seeded paddy rice (Oryza sativa L. ‘Lebonnet’) at optimum stands of 215 to 270 plants/m2 at Stuttgart, Arkansas, were reduced 9, 18, 20, and 36% by bearded sprangletop [Leptochloa fascicularis (Lam.) Gray] densities of 11, 22, 54, and 108 plants/m2, respectively. There was a linear decrease in rice grain yield of 21 kg/ha for each bearded sprangletop plant per square meter. Weed densities of 54 and 108 plants/m2 reduced head-rice yields (whole milled kernels) and a density of 108 plants/m2 reduced germination of rice seed. The number of bearded sprangletop panicles produced per weed plant decreased as the weed density increased.

Keywords

Weed biologyweed controlweed interference
Type
Research Article
Information
Weed Science , Volume 31 , Issue 1 , January 1983 , pp. 120 - 123
Copyright
Copyright © 1983 Weed Science Society of America 

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References

Literature Cited

1. Adair, C. R., Bollick, C. N., Bowman, D. H., Jodon, N. E., Johnston, T. H., Webb, B. D., and Atkins, J. G. 1973. Rice breeding and testing methods in the United States. Pages 22–77 in U.S. Dep. Agric., Agric. Handb. 289. 154.Google Scholar
2. Barrett, S.C.H. and Seaman, D. E. 1980. The weed flora of Californian rice fields. Aquat. Bot. 9:351–376.CrossRefGoogle 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 hirsutum). Weed Sci. 28:258–262.CrossRefGoogle Scholar
4. Chandler, J. M. 1981. Estimated losses of crops to weeds. Pages 95–109 in Pimentel, D., ed. Handbook of Pest Management in Agriculture. Vol. 1, CRC Press, Inc., Boca Raton, FL.Google Scholar
5. Chang, W. L. 1970. The effect of weeds on rice in paddy field. 1. Weed species and population density. J. Taiwan Agric. Res. 19(4):18–24.Google Scholar
6. Correll, D. S. and Johnston, M. C. 1970. Manual of the Vascular Plants of Texas. Texas Res. Found., Renner, TX. 1881.Google Scholar
7. Hagood, E. S. Jr., Bauman, T. T., Williams, J. L. Jr., and Schreiber, M. M. 1980. Growth analysis of soybeans (Glycine max) in competition with velvetleaf (Abutilon theophrasti). Weed Sci. 28:729–734.Google Scholar
8. Hitchcock, A. S. 1950. Manual of the Grasses of the United States. 2nd ed., Rev. by Agnes Chase. U.S. Dep. Agric. Misc. Publ. 200. 1051.Google Scholar
9. Holm, L. G., Plucknett, D. L., Pancho, J. V., and Herberger, J. P. 1977. The World's Worst Weeds, Distribution and Biology. Univ. Press Hawaii, Honolulu, 609.Google Scholar
10. Kleinig, C. R. and Noble, J. C. 1968. Competition between rice and barnyard grass (Echinochloa). 1. The influence of weed density and nutrient supply in the field. Aust. J. Exp. Agric. Anim. Husb. 8:358–363.CrossRefGoogle Scholar
11. Matsunaka, S. 1970. Weed control in rice. Pages 7–23 in FAO Int. Conf. Weed Control. Pub. Weed Sci. Soc. Am., Urbana, IL.Google Scholar
12. Okafor, L. I. and De Datta, S. K. 1976. Competition between upland rice and purple nutsedge for nitrogen, moisture, and light. Weed Sci. 24:43–46.Google Scholar
13. Oliver, L. R., Frans, R. E., and Talbert, R. E. 1976. Field competition between tall morningglory and soybeans. 1. Growth analysis. Weed Sci. 24:482–488.CrossRefGoogle Scholar
14. Rydrych, D. J. 1974. Competition between winter wheat and downy brome. Weed Sci. 22:211–214.Google Scholar
15. Smith, R. J. Jr. 1968. Weed competition in rice. Weed Sci. 16: 252–255.CrossRefGoogle Scholar
16. Smith, R. J. Jr. 1974. Competition of barnyardgrass with rice cultivars. Weed Sci. 22:423–426.Google Scholar
17. Smith, R. J. Jr. 1981. Herbicide programs for weed control in rice. Agric. Res. Results (ARR-S-8). Sci. Ed. Admin., U.S. Dep. Agric. 52.Google Scholar
18. Smith, R. J. Jr., Flinchum, W. T., and Seaman, D. E. 1977. Weed control in U.S. rice production. U.S. Dep. Agric., Agric. Handb. 497. 78.Google Scholar
19. U.S. Department of Agriculture. 1952. Testing Agricultural and Vegetable Seeds. U.S. Dep. Agric., Agric Handb. 30. 440.Google Scholar
20. Williams, R. G. 1955-1956. Weeds in rice [in 11 parts]. Rice J. 58(13): 18–19; 59(1):8-9; (2):8; (3):8-9; (4):14; (5):24; (6)34-35; (8):22-23; (9):15; (10):16-17; (12):20-26,28.Google Scholar