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Internal rib necrosis head lettuce in Imperial Valley
Authors
Hunter JohnsonD. R. Woodruff
T. W. Whitaker
Authors Affiliations
Hunter Johnson, Jr. is Extension Vegetable Crops Specialist, University of California, Riverside; David R. Woodruff is Farm Advisor, Imperial County; Thomas W. Whitaker is Research Geneticist, Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, La Jolla, California.Publication Information
Hilgardia 24(9):8-10. DOI:10.3733/ca.v024n09p8. September 1970.
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Abstract
Planting resistant varieties appears to be today's only solution to the closely related Imperial Valley lettuce problems of (I) internal rib necrosis (see photo) which develops in the field during maturity, and (2) rusty rib (see cover) which develops after harvest during cold storage. The popular variety Climax is highly susceptible to both.
Johnson H, Woodruff D, Whitaker T. 1970. Internal rib necrosis head lettuce in Imperial Valley. Hilgardia 24(9):8-10. DOI:10.3733/ca.v024n09p8
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