Persistent Link:
http://hdl.handle.net/10150/223843
Title:
Effect of Powdery Mildew on Pecan Nut Weight and Quality
Author:
Olsen, M.; Rasmussen, S.; Nischwitz, C.; Kilby, M.
Issue Date:
Oct-2000
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Citrus and Deciduous Fruit and Nut Research Report
Abstract:
Powdery mildew of pecan, caused by Microsphaera ulni, results in discoloration of pecan shucks, but its effects on yield and quality of kernels are not known. In 1999, powdery mildew was observed on pecan shucks by the latter part of June in a commercial pecan orchard near Sahuarita, Arizona. The fungus continued to be active throughout the summer. However, results of a field test comparing diseased and healthy nuts from two varieties of pecans indicate that powdery mildew did not affect nut weight or quality. Whole nut weights, kernel weights, color ratings or percentage of discarded nuts were not significant between paired clusters of nuts that were treated with fungicides and remained disease free and untreated nuts that were infected with powdery mildew. Although shucks may have a high percentage of area covered by powdery mildew, results from this trial indicate that fungicide treatments are not warranted.
Keywords:
Agriculture -- Arizona; Citrus fruits -- Arizona; Pecan -- Arizona; Pecan -- Diseases
Series/Report no.:
AZ1178; Series P-123

Full metadata record

DC FieldValue Language
dc.titleEffect of Powdery Mildew on Pecan Nut Weight and Qualityen_US
dc.contributor.authorOlsen, M.en_US
dc.contributor.authorRasmussen, S.en_US
dc.contributor.authorNischwitz, C.en_US
dc.contributor.authorKilby, M.en_US
dc.date.issued2000-10-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCitrus and Deciduous Fruit and Nut Research Reporten_US
dc.description.abstractPowdery mildew of pecan, caused by Microsphaera ulni, results in discoloration of pecan shucks, but its effects on yield and quality of kernels are not known. In 1999, powdery mildew was observed on pecan shucks by the latter part of June in a commercial pecan orchard near Sahuarita, Arizona. The fungus continued to be active throughout the summer. However, results of a field test comparing diseased and healthy nuts from two varieties of pecans indicate that powdery mildew did not affect nut weight or quality. Whole nut weights, kernel weights, color ratings or percentage of discarded nuts were not significant between paired clusters of nuts that were treated with fungicides and remained disease free and untreated nuts that were infected with powdery mildew. Although shucks may have a high percentage of area covered by powdery mildew, results from this trial indicate that fungicide treatments are not warranted.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCitrus fruits -- Arizonaen_US
dc.subjectPecan -- Arizonaen_US
dc.subjectPecan -- Diseasesen_US
dc.identifier.urihttp://hdl.handle.net/10150/223843-
dc.relation.ispartofseriesAZ1178en_US
dc.relation.ispartofseriesSeries P-123en_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.