Planting Density Influences Disease Incidence and Severity of Sclerotinia Blight in Peanut

Maas, A.L. and Dashiell, K.E. and Melouk, H.A. (2006) Planting Density Influences Disease Incidence and Severity of Sclerotinia Blight in Peanut. Crop Science, 46 (3). pp. 1341-1345.

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Sclerotinia blight, caused by Sclerotinia minor Jagger, has become one of the major limiting factors in peanut (Arachis hypogaea L.) production. The objectives of this research were to evaluate the effects of plant spacing on disease incidence and severity of Sclerotinia blight in peanut research plots, to measure the level of apparent resistance at different seeding rates, and to determine which methods would produce clearest selection criteria in space-planted breeding plots. Four peanut cultivars, Tamspan 90, Southwest Runner, Okrun, and Flavor Runner 458, were evaluated in field plots at four plant spacings (6, 15, 30, and 46 cm) in 2003 and 2004. Increased plant spacing improved sensitivity of disease incidence based determination of cultivar resistance but did not increase mean incidence significantly. Disease severity reached the highest level at the widest plant spacing. Final disease incidence provided excellent differentiation of genotypes with different levels of resistance and required the least amount of labor as compared with other methods of disease assessment

Item Type: Article
Additional Information: SNNigam Collection
Author Affiliation: USDA-ARS, Coastal Plain Exp. Sta., P.O. Box 748, Tifton, GA 31794
Subjects: Plant Protection
Divisions: Groundnut
Depositing User: Mr B Krishnamurthy
Date Deposited: 03 Apr 2013 08:51
Last Modified: 03 Apr 2013 08:51
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