Persistent Link:
http://hdl.handle.net/10150/214915
Title:
Evaluation of Fungicide Rotations for Control of Powdery Mildew of Cantaloupe
Author:
Olsen, M. W.; Rasmussen, S.
Issue Date:
Aug-2001
Publisher:
College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ)
Journal:
Vegetable Report
Abstract:
A fungicide trial was established at The University of Arizona Marana Agricultural Center in April 2000 to evaluate rotation and timing of application for several fungicides used for control of powdery mildew on cantaloupe. Treatments included seven registered fungicides: azoxystrobin, micronized sulfur, neem extract, potassium bicarbonate, benomyl, thiophanate methyl and trifloxystrobin. Different rotations and timing of application of these fungicides were applied either before or immediately after initial signs of powdery mildew infection and up to three times thereafter depending on rotation scheme. By the second application, disease severity was mild but increased rapidly, and it was severe by the time of the last application. Powdery mildew was controlled to some degree on the upper leaf surface by all treatments. However, efficacy was more variable on the lower leaf surface and was reduced when applications were made only at dates 1 and 2. Results show the increased efficacy of fungicides with systemic or trans-laminar activity and the possibilities of rotations with contact fungicides for resistance management.
Keywords:
Agriculture -- Arizona; Vegetables -- Arizona; Vegetables -- Plant pathogens
Series/Report no.:
AZ1252; Series P-127

Full metadata record

DC FieldValue Language
dc.titleEvaluation of Fungicide Rotations for Control of Powdery Mildew of Cantaloupeen_US
dc.contributor.authorOlsen, M. W.en_US
dc.contributor.authorRasmussen, S.en_US
dc.date.issued2001-08-
dc.publisherCollege of Agriculture and Life Sciences, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalVegetable Reporten_US
dc.description.abstractA fungicide trial was established at The University of Arizona Marana Agricultural Center in April 2000 to evaluate rotation and timing of application for several fungicides used for control of powdery mildew on cantaloupe. Treatments included seven registered fungicides: azoxystrobin, micronized sulfur, neem extract, potassium bicarbonate, benomyl, thiophanate methyl and trifloxystrobin. Different rotations and timing of application of these fungicides were applied either before or immediately after initial signs of powdery mildew infection and up to three times thereafter depending on rotation scheme. By the second application, disease severity was mild but increased rapidly, and it was severe by the time of the last application. Powdery mildew was controlled to some degree on the upper leaf surface by all treatments. However, efficacy was more variable on the lower leaf surface and was reduced when applications were made only at dates 1 and 2. Results show the increased efficacy of fungicides with systemic or trans-laminar activity and the possibilities of rotations with contact fungicides for resistance management.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectVegetables -- Arizonaen_US
dc.subjectVegetables -- Plant pathogensen_US
dc.identifier.urihttp://hdl.handle.net/10150/214915-
dc.relation.ispartofseriesAZ1252en_US
dc.relation.ispartofseriesSeries P-127en_US
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