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Interference of Broadleaf Signalgrass (Brachiaria platyphylla) in Peanuts (Arachis hypogaea)

Published online by Cambridge University Press:  12 June 2017

Rick W. Chamblee ,
Lafayette Thompson Jr.  and
Harold D. Coble
Rick W. Chamblee
Affiliation:
Dep. Crop Sci., North Carolina State Univ., Raleigh, NC 27650
Lafayette Thompson Jr.
Affiliation:
Dep. Crop Sci., North Carolina State Univ., Raleigh, NC 27650
Harold D. Coble
Affiliation:
Dep. Crop Sci., North Carolina State Univ., Raleigh, NC 27650
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Abstract

Interference studies utilizing natural infestations of broadleaf signalgrass [Brachiaria platyphylla (Griseb.) Nash] in peanuts [Arachis hypogaea (L.) ‘Florigiant′] were conducted at two sites in 1978 and repeated at the same sites in 1979. Full-season interference from broadleaf signalgrass populations of 8, 16, and 1050 plants/10 m of row reduced seed yields 14, 28, and 69%, respectively. Linear regression analysis showed that slightly less than 4 plants/10 m of row significantly reduced yields. Broadleaf signalgrass interference with peanuts for 6 weeks or less after planting did not reduce seed yields; however, interference for 8 weeks or longer after planting did. Peanuts kept weed-free for 6 weeks or more after planting had seed yields equal to peanuts kept weed-free all season. Full-season broadleaf signalgrass interference reduced mature peanut forage yields 64%, but peanut interference only reduced broadleaf signalgrass forage yield 10%.

Keywords

Competitioneconomic thresholdintegrated pest management
Type
Research Article
Information
Weed Science , Volume 30 , Issue 1 , January 1982 , pp. 45 - 49
Copyright
Copyright © 1982 by the Weed Science Society of America 

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References

Literature Cited

1. Ambrose, L. G. and Coble, H. D. 1975. Fall panicum competition in soybeans. Proc. South. Weed Sci. Soc. 28:36.Google Scholar
2. Bleasdale, J.K.A. 1960. Studies on plant competition. Pages 133–142 in Harper, J. L., ed. The Biology of Weeds. Blackwell Sci. Publ., Oxford, Eng. Google Scholar
3. Carmer, S. G. and Swanson, M. R. 1973. An evaluation of ten pairwise multiple comparison procedures by Monte Carlo methods. J. Am. Stat. Assoc. 68:66–74.CrossRefGoogle Scholar
4. Chamblee, R. W., Thompson, L. Jr., and Bunn, T. M. 1978. Interference and management of broadleaf signalgrass in peanuts. Proc. South. Weed Sci. Soc. 33:25.Google Scholar
5. Chamblee, R. W., Thompson, L. Jr., and Bunn, T. M. 1982. Management of broadleaf signalgrass (Brachiaria platyphylla) in peanuts (Arachis hypogaea) with herbicides. Weed Sci. 30: (In press).Google Scholar
6. Chisaka, H. 1977. Weed damage to crops: Yield loss due to weed competition. Pages 1–16 in Fryer, J. D. and Matsunaka, S., ed. Integrated Control of Weeds. Univ. of Tokyo Press.Google Scholar
7. Dawson, J. H. 1976. Competition of late-emerging weeds with sugarbeets. Abstr., Weed Sci. Soc. p. 64.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 periods of weed-free maintenance or weed competition. Weed Sci. 23:368–372.CrossRefGoogle Scholar
9. Hill, L. V. and Santelmann, P. W. 1969. Competitive effects of annual weeds on Spanish peanuts. Weed Sci. 17:1–2.CrossRefGoogle Scholar
10. Muller, C. H. 1969. Allelopathy as a factor in ecological process. Vegetatio 18:348–357.Google Scholar
11. Nave, W. R. and Wax, L. M. 1971. Effect of weeds on soybean yield and harvesting efficiency. Weed Sci. 19:533–535.Google Scholar
12. Oliver, L. R., Frans, R. E., and Talbert, R. E. 1975. Field competition between tall morningglory and soybeans. I. Growth analysis. Weed Sci. 24:482–488.CrossRefGoogle Scholar
13. Rice, E. L. 1974. Allelopathy. Academic Press, New York. 343 p.Google Scholar
14. Thurlow, D. L. and Buchanan, G. A. 1972. Competition of sicklepod with soybeans. Weed Sci. 20:379–384.CrossRefGoogle Scholar
15. Waller, R. A. and Duncan, D. B. 1969. A Bayes rule for the symmetric multiple comparison problem. J. Am. Stat. Assoc. 64:1484–1499.Google Scholar
16. York, A. C. and Coble, H. D. 1977. Fall panicum interference in peanuts. Weed Sci. 25:43–47.Google Scholar