Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-18T12:00:03.210Z Has data issue: false hasContentIssue false
  • English
  • Français

Broadleaf Signalgrass (Brachiaria platyphylla) Duration of Interference in Rice (Oryza sativa)

Published online by Cambridge University Press:  12 June 2017

John T. McGregor Jr. ,
Roy J. Smith Jr.  and
Ronald E. Talbert
John T. McGregor Jr.
Affiliation:
U.S. Dep. Agric., Stuttgart, AR 72160
Roy J. Smith Jr.
Affiliation:
U.S. Dep. Agric., Stuttgart, AR 72160
Ronald E. Talbert
Affiliation:
Dep. Agron., Altheimer Lab., Univ. Arkansas, Fayetteville, AR 72703
Get access Rights & Permissions [Opens in a new window]

Abstract

Interference from broadleaf signalgrass at a density of 180 plants/m2 reduced rough rice yields of ‘Bond’ a maximum of 48% at 95 days after rice emergence and reduced yields of ‘Mars' a maximum of 21% from season-long interference. Interference durations of 40 days or longer reduced the panicles/m2, culms/m2, and plant height of rice. Straw dry weight of Bond and Mars was reduced 41 and 26%, respectively, from season-long interference. Increased durations of weed interference did not affect the number of spikelets/panicle, percent filled spikelets, rough kernel weight, or head rice yield of either cultivar. Broadleaf signalgrass produced less dry weight and fewer panicles/m2 when grown with Mars than with Bond.

Keywords

Broadleaf signalgrass, Brachiaria platyphylla (Griseb.) Nash # BRAPPrice, Oryza sativa L.Rice cultivarsyield componentsBRAPP
Type
Weed Biology and Ecology
Information
Weed Science , Volume 36 , Issue 6 , November 1988 , pp. 747 - 750
Copyright
Copyright © 1988 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Chamblee, R. W., Thompson, L., and Coble, H. D. 1982. Interference of broadleaf signalgrass (Brachiaria platyphylla) in peanuts. (Avachis hypogaea). Weed Sci. 30:45–49.CrossRefGoogle Scholar
2. De Datta, S. K. 1981. Principles and Practices of Rice Production. John Wiley and Sons, New York. 618 pp.Google Scholar
3. Diarra, A., Smith, R. J. Jr., and Talbert, R. E. 1985. Interference of red rice (Oryza sativa) with rice (O. sativa). Weed Sci. 33:644–649.CrossRefGoogle Scholar
4. Jennings, P. R. and de Jesus, J. Jr. 1968. Studies on competition in rice. I. Competition in mixtures of varieties. Evolution 22:119–124.Google Scholar
5. Kawano, K., Gonzalez, H., and Lucena, M. 1974. Intraspecific competition, competition with weeds, and spacing response to rice. Crop Sci. 14:841–845.Google Scholar
6. Minotti, P. L. and Sweet, R. D. 1981. Role of crop competition in limiting losses from weeds. Pages 351–367 in Pimentel, D., ed. Handbook of Pest Management in Agriculture. Vol. II. CRC Press, Inc., Boca Raton, FL.Google Scholar
7. Noda, K. 1977. Integrated weed control in rice. Pages 17–44 in Fryer, J. D. and Matsunaka, S., eds. Integrated Control of Weeds. Univ. Tokyo Press.Google Scholar
8. Smith, R. J. Jr. 1968. Weed competition in rice. Weed Sci. 18:1252–1255.Google Scholar
9. Smith, R. J. Jr. 1974. Competition of barnyardgrass with rice cultivars. Weed Sci. 22:423–426.CrossRefGoogle Scholar
10. 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 pp.Google Scholar
11. Smith, R. J. Jr. 1983. Competition of bearded sprangletop (Leptochloa fascicularis) with rice (Oryza sativa). Weed Sci. 31:120–123.CrossRefGoogle Scholar
12. Snipes, C. E., Street, J. E., and Walker, R. H. 1987. Interference periods of common cocklebur (Xanthium strumarium) with cotton. Weed Sci. 35:529–532.Google Scholar
13. Steel, R.G.D. and Torrie, J. H. 1980. Principles and Procedures of Statistics. McGraw-Hill Book Co., New York. 481 pp.Google Scholar
14. 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. 15:149–152.Google Scholar