Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-22T06:28:16.521Z Has data issue: false hasContentIssue false

Late-Season Interference of Spurred Anoda in Chile Peppers

Published online by Cambridge University Press:  12 June 2017

Jill Schroeder*
Affiliation:
Dep. Entomol., Plant Pathol., Weed Sci., New Mexico State Univ., Las Cruces, NM 88003

Abstract

Broadleaf weeds, including spurred anoda, emerge after direct-seeded chile peppers are thinned. Field experiments were conducted in 1989, 1990, and 1991 to determine the effect of spurred anoda density on green and red pepper yield, quality, and ease of hand harvest. Spurred anoda was established immediately after peppers were thinned at initial densities of 0, 3, 6, 12, 24, or 48 plants 9 m−1 row. The 1991 experiment also evaluated the influence of delayed pepper thinning and concurrent spurred anoda establishment on the competitive effect of spurred anoda. Spurred anoda were beginning to flower at green harvest and senescing at red harvest regardless of planting date. Spurred anoda were taller and accumulated more biomass when planted at a pepper thinning stage of 10 cm compared to 20 cm. Spurred anoda that emerged after thinning peppers reduced yield and ease of harvest of green and red peppers but not the quality of green peppers. Yield reduction at the highest spurred anoda density was 31 to 49% and 12 to 27% when peppers were thinned at 10 or 20 cm, respectively. Yield reduction was smaller when peppers were thinned at 20 cm tall than 10 cm tall and appeared to be associated with reduced spurred anoda biomass. Time required to hand harvest 1 kg of green or red peppers increased as spurred anoda density increased when peppers were thinned at 10 cm.

Type
Weed Biology and Ecology
Copyright
Copyright © 1993 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. Bosland, P. W. 1992. Chiles: A diverse crop. Hort. Technol. 2:610.CrossRefGoogle Scholar
2. Chandler, J. M. 1977. Competition of spurred anoda, velvetleaf, prickly sida, and Venice mallow in cotton. Weed Sci. 25:151158.CrossRefGoogle Scholar
3. Chandler, J. M. 1979. Spurred anoda: A potential weed in southern crops. U.S. Dep. Agric. Sci. and Ed. Ad. Agric. Reviews and Manuals. ARM-S-2/February 1979. 19 p.Google Scholar
4. Egley, G. H. and Williams, R. D. 1991. Emergence periodicity of six summer annual weed species. Weed Sci. 39:595600.CrossRefGoogle Scholar
5. Gore, C., Hand, J. G., Albelo, J., Dominguez, L., Hoel, S., and Lawrence, J. 1990. New Mexico Agricultural Statistics 1990. United States Dep. Agric. and New Mexico Agric. Statistics Serv., New Mexico Dep. Agric., Las Cruces, NM. 72 pp.Google Scholar
6. Lee, R. 1991. Weeds end report. New Mexico State Univ., Coop. Ext. Serv., U.S. Dep. Agric. New Mexico Crop Pest Reporter. Vol. 9, No. 13. December, 1991.Google Scholar
7. Schroeder, J. 1992. Oxyfluorfen for directed postemergence weed control in chile peppers. Weed Technol. 6:10101014.CrossRefGoogle Scholar
8. Solano, F., Schrader, J. W., and Coble, H. D. 1974. Germination and emergence of spurred anoda. Weed Sci. 22:353354.CrossRefGoogle Scholar
9. Solano, F., Schrader, J. W., and Coble, H. D. 1976. Germination, growth and development of spurred anoda. Weed Sci. 24:574578.CrossRefGoogle Scholar