Persistent Link:
http://hdl.handle.net/10150/214954
Title:
Evaluation of Fungicides for Control of Powdery Mildew on Lettuce in 2002
Author:
Matheron, Michael E.; Porchas, Martin
Issue Date:
Aug-2002
Publisher:
College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ)
Journal:
Vegetable Report
Abstract:
Powdery mildew on lettuce is caused by the fungus Erysiphe cichoracearum. This disease is favored by moderate to warm temperatures and dry weather conditions. Several potential new fungicides were evaluated for control of powdery mildew on lettuce in 2002. Powdery mildew appeared in our plots by February 15 and reached moderate levels of severity by plant maturity on March 6 to 8th. Nontreated lettuce plants were moderately infected with powdery mildew at plant maturity, whereas the level of disease was low to virtually nonexistent in plots treated with Microthiol Disperss, Rally, Quinoxyfen, Flint, and Rally alternated with Kaligreen. Furthermore, other tested products provided moderate suppression of powdery mildew. The future availability of one or more of the tested chemistries not currently registered for lettuce could help in efforts to control powdery mildew on this crop and to establish and maintain a fungicide resistance management program for plant disease control products.
Keywords:
Agriculture -- Arizona; Vegetables -- Arizona; Vegetable -- Plant pathogens
Series/Report no.:
AZ1292; Series P-131

Full metadata record

DC FieldValue Language
dc.titleEvaluation of Fungicides for Control of Powdery Mildew on Lettuce in 2002en_US
dc.contributor.authorMatheron, Michael E.en_US
dc.contributor.authorPorchas, Martinen_US
dc.date.issued2002-08-
dc.publisherCollege of Agriculture and Life Sciences, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalVegetable Reporten_US
dc.description.abstractPowdery mildew on lettuce is caused by the fungus Erysiphe cichoracearum. This disease is favored by moderate to warm temperatures and dry weather conditions. Several potential new fungicides were evaluated for control of powdery mildew on lettuce in 2002. Powdery mildew appeared in our plots by February 15 and reached moderate levels of severity by plant maturity on March 6 to 8th. Nontreated lettuce plants were moderately infected with powdery mildew at plant maturity, whereas the level of disease was low to virtually nonexistent in plots treated with Microthiol Disperss, Rally, Quinoxyfen, Flint, and Rally alternated with Kaligreen. Furthermore, other tested products provided moderate suppression of powdery mildew. The future availability of one or more of the tested chemistries not currently registered for lettuce could help in efforts to control powdery mildew on this crop and to establish and maintain a fungicide resistance management program for plant disease control products.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectVegetables -- Arizonaen_US
dc.subjectVegetable -- Plant pathogensen_US
dc.identifier.urihttp://hdl.handle.net/10150/214954-
dc.relation.ispartofseriesAZ1292en_US
dc.relation.ispartofseriesSeries P-131en_US
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