T.L. Kirkpatrick, University of Arkansas, Southwest Research and Extension Center, 362 Highway 174 North, Hope, AR 71801, K.S. Lawrence, Auburn University, 209 Life Science, Dept. Ent. and Plant Pathology, Auburn, AL 36849, G. W. Lawrence, Mississippi State Universtiy, 301 Clay Lyle, Dept. Ent. and Plant Pathology, Mississippi State, MS 39762, J. D. Mueller, Clemson University, Edisto Research and Education Center, 64 Research Road, Blackville, SC 29817, and N. M. French, Eden Bioscience Corporation, 15200 Burlingame Road, Little Rock, AR 72223-9618.
A study was initiated to examine the effects of harpin proteins on cotton infected with nematodes. Replicated tests were established in Alabama, Arkansas, Mississippi, and South Carolina. Each test was conducted by an independent University or Extension scientist. Harpin proteins were applied to the cottonseed (EBC-151 and EBC-152) or the foliage (EBC-351) at two weeks after the two-leaf stage of PM1218. All plants were grown in a greenhouse or growth room environment. At planting, each pot was inoculated with 2,000 eggs of root-knot nematode,
Meloidogyne incognita.
Trials were terminated at approximately 45 days after initiation. Above and below ground plant measurements, root galling, numbers of nematode eggs and juveniles were recorded.
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