Ecological Interactions and Biological Control

By David A. Andow; David W. Ragsdale et al. | Go to book overview
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Paul in 1990 and Waseca in 1991 the smother plant delayed silk emergence by 0.7 to 1.8 days, and by 1.5 to 4.9 days, respectively, depending on seeding rate. At St. Paul in 1990 corn grain yield was not affected by smother plant presence, but at Waseca in 1991 the smother plant reduced corn grain yield by 11 to 24 percent. These results indicate that it may be possible to develop spring-seeded smother plants that reduce corn yield by less than 10 percent. Development of smother plants may be facilitated by research into the mechanisms of smother plant inter­ ference with the main crop and with weeds, by genetic manipulation and selection of smother plant cultivars, and by the development of smother plants that produce a marketable product. Selection of main crop genotypes tolerant of smother plants may also be important.


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Fischer, A., and L. Burrill. 1993. "Managing interference in a sweet corn-white clover living mulch system". American Journal of Alternative Agriculture 8:51-56.


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