Persistent Link:
http://hdl.handle.net/10150/221432
Title:
Downy Mildew of Broccoli - Promising New Fungicides for Disease Control
Author:
Matheron, M. E.; Matejka, J. C.
Issue Date:
May-1987
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Vegetable Report
Abstract:
Downy mildew of broccoli, caused by the fungus Peronospora parasitica, is a perennial disease problem affecting winter broccoli production in Arizona. During 1985-87, potential systemic fungicides were evaluated in the field for disease control. In the 1985-86 season, a period of high disease incidence, lesion development was significantly reduced by fosetyl-Al (44 %), phosphorous acid (42 %), oxadixyl + mancozeb (35 %), chlorothalonil (33 %), metalaxyl + mancozeb (30 %) and metalaxyl + chlorothalonil (28 %). During the 1986 -87 growing season, disease incidence was low and lesion development was significantly reduced by phosphorous acid (82 %), fosetyl -Al or oxadixyl + chlorothalonil (77 %), metalaxyl + chlorothalonil (68 %) and chlorothalonil (54 %). Fosetyl-Al, phosphorous acid and oxadixyl were as effective as currently available fungicides ( metalaxyl and chlorothalonil) for control of downy mildew of broccoli in Arizona.
Keywords:
Agriculture -- Arizona; Vegetables -- Arizona; Broccoli -- Arizona; Broccoli -- Diseases
Series/Report no.:
Series P-70; 370070

Full metadata record

DC FieldValue Language
dc.titleDowny Mildew of Broccoli - Promising New Fungicides for Disease Controlen_US
dc.contributor.authorMatheron, M. E.en_US
dc.contributor.authorMatejka, J. C.en_US
dc.date.issued1987-05-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalVegetable Reporten_US
dc.description.abstractDowny mildew of broccoli, caused by the fungus Peronospora parasitica, is a perennial disease problem affecting winter broccoli production in Arizona. During 1985-87, potential systemic fungicides were evaluated in the field for disease control. In the 1985-86 season, a period of high disease incidence, lesion development was significantly reduced by fosetyl-Al (44 %), phosphorous acid (42 %), oxadixyl + mancozeb (35 %), chlorothalonil (33 %), metalaxyl + mancozeb (30 %) and metalaxyl + chlorothalonil (28 %). During the 1986 -87 growing season, disease incidence was low and lesion development was significantly reduced by phosphorous acid (82 %), fosetyl -Al or oxadixyl + chlorothalonil (77 %), metalaxyl + chlorothalonil (68 %) and chlorothalonil (54 %). Fosetyl-Al, phosphorous acid and oxadixyl were as effective as currently available fungicides ( metalaxyl and chlorothalonil) for control of downy mildew of broccoli in Arizona.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectVegetables -- Arizonaen_US
dc.subjectBroccoli -- Arizonaen_US
dc.subjectBroccoli -- Diseasesen_US
dc.identifier.urihttp://hdl.handle.net/10150/221432-
dc.relation.ispartofseriesSeries P-70en_US
dc.relation.ispartofseries370070en_US
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