Wednesday, 9 November 2005
2

Georganic - a Peanut Cultivar for Organic Farming.

Corley Holbrook1, A. K. Culbreath2, E. G. Cantonwine2, W. C. Johnson1, and X. Ni1. (1) USDA-ARS, Crop Genetics and Breeding Unit, PO Box 748, Tifton, GA 31793, (2) University of Georgia, Dept. of Plant Pathology, Coastal Plain Experiment Station, Tifton, GA 31793

There is a rapidly growing market for organic peanuts and peanut products. Organic growers in the Southeastern U.S. need peanut cultivars that compete well with weeds and that have high levels of resistance to multiple pests. Georganic is a peanut cultivar that was released to meet those needs. In multiple years of testing this cultivar had significantly lower incidence of tomato spotted wilt virus in comparison to standard peanut cultivars. This genotype also has high resistance to leaf spot and can produce acceptable yields without fungicide sprays for leaf spot control. Georganic has a spreading runner growth habit which suppresses late season weed germination and growth. Agronomic studies are ongoing to developed improved organic systems for peanut production.

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