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dc.contributor.authorNavia Gine, Pablo Alejandro
dc.date.accessioned2014-03-04T20:36:50Z
dc.date.available2014-03-04T20:36:50Z
dc.date.issued2012-08
dc.identifier.othernavia-gine_pablo_a_201208_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/navia-gine_pablo_a_201208_ms
dc.identifier.urihttp://hdl.handle.net/10724/28365
dc.description.abstractNew peanut (Arachis hypogaea) cultivars ‘Florida-07’, ‘Georgia-06G’, ‘Georgia-07W’, and ‘Tifguard’ were combined with four different fungicide treatments in multiple field trials in 2010 and 2011 to examine the relationship between percent defoliation, caused by Cercospora arachidicola or Cercosporidium personatum, and pod yield. Decline in yield was no more than 14.4 kg per % increase in defoliation in all cultivars and trials, which was lower than previously reported. Canopy reflectance was correlated with percent defoliation in most cases. Field trials were conducted in Tifton, GA and Marianna, FL to evaluate field reactions of new peanut genotypes developed as part of the USAID Peanut CRSP program. Four genotypes (97x45-HO1-2-B2G-1-2-1-2, 98x64-2-2-1-2b4-B, 96x72-HO1-10-2-1-b4-B, and CRSP 1048-192T) showed moderate levels of field resistance to C. personatum. Incidence of stem lesions caused by C. personatum was higher for Florida-07 than for Georgia-07W or Tifguard.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectCercosporidium personatum
dc.subjectlate leaf spot
dc.subjectyield losses
dc.subjectcankers
dc.subjectresistance.
dc.titleCharacterization of the relationship between leaf spot severity and yield in new peanut runner-type cultivars and effects of new peanut genotypes on leaf spot epidemics
dc.typeThesis
dc.description.degreeMS
dc.description.departmentPlant Pathology
dc.description.majorPlant Pathology
dc.description.advisorAlbert K. Culbreath
dc.description.committeeAlbert K. Culbreath
dc.description.committeeBarry Tillman
dc.description.committeeNathan B. Smith
dc.description.committeeRobert Kemerait


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