Persistent Link:
http://hdl.handle.net/10150/215235
Title:
Evaluation of Products to Manage Sclerotinia Drop of Lettuce in 2004
Author:
Matheron, Michael E.; Porchas, Martin
Issue Date:
Sep-2004
Publisher:
College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ)
Journal:
Vegetable Report
Abstract:
Sclerotinia drop on lettuce is caused by two soil-borne fungi, Sclerotinia minor and S. sclerotiorum. Moist soil and moderate temperatures favor this disease. Some registered products as well as new chemistries in development were compared for their ability to suppress Sclerotinia drop on lettuce during the winter vegetable growing season in 2003-2004. Sclerotia of each pathogen were incorporated into plots after lettuce thinning and just before the first application of test compounds. In plots infested with either Sclerotinia minor or S. sclerotiorum, all materials tested at an appropriate rate significantly reduced disease. In plots infested with S. minor, the best treatments included Endura, Fluazinam, and Contans alternated with Endura. For plots containing S. sclerotiorum, the best treatments included Fluazinam, Contans, Switch, Endura, and Contans alternated with Endura. Two of the products tested, Contans and Serenade, are biological control materials. For a valid comparison of products for control of Sclerotinia drop of lettuce, it is important to compare the results obtained from more than one field study. The reader is urged to review previous studies in addition to this report to get a true picture of the relative efficacy of tested compounds for control of Sclerotinia drop.
Keywords:
Agriculture -- Arizona; Vegetables -- Arizona; Vegetables -- Plant pathology
Series/Report no.:
Series P-139; AZ1348

Full metadata record

DC FieldValue Language
dc.titleEvaluation of Products to Manage Sclerotinia Drop of Lettuce in 2004en_US
dc.contributor.authorMatheron, Michael E.en_US
dc.contributor.authorPorchas, Martinen_US
dc.date.issued2004-09-
dc.publisherCollege of Agriculture and Life Sciences, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalVegetable Reporten_US
dc.description.abstractSclerotinia drop on lettuce is caused by two soil-borne fungi, Sclerotinia minor and S. sclerotiorum. Moist soil and moderate temperatures favor this disease. Some registered products as well as new chemistries in development were compared for their ability to suppress Sclerotinia drop on lettuce during the winter vegetable growing season in 2003-2004. Sclerotia of each pathogen were incorporated into plots after lettuce thinning and just before the first application of test compounds. In plots infested with either Sclerotinia minor or S. sclerotiorum, all materials tested at an appropriate rate significantly reduced disease. In plots infested with S. minor, the best treatments included Endura, Fluazinam, and Contans alternated with Endura. For plots containing S. sclerotiorum, the best treatments included Fluazinam, Contans, Switch, Endura, and Contans alternated with Endura. Two of the products tested, Contans and Serenade, are biological control materials. For a valid comparison of products for control of Sclerotinia drop of lettuce, it is important to compare the results obtained from more than one field study. The reader is urged to review previous studies in addition to this report to get a true picture of the relative efficacy of tested compounds for control of Sclerotinia drop.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectVegetables -- Arizonaen_US
dc.subjectVegetables -- Plant pathologyen_US
dc.identifier.urihttp://hdl.handle.net/10150/215235-
dc.relation.ispartofseriesSeries P-139en_US
dc.relation.ispartofseriesAZ1348en_US
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