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dc.contributor.authorMatheron, M. E.
dc.contributor.authorLeonard, R.
dc.contributor.authorMajor, G.
dc.contributor.editorOebker, Norman F.en_US
dc.date.accessioned2012-03-06T22:22:36Z
dc.date.available2012-03-06T22:22:36Z
dc.date.issued1992-12
dc.identifier.urihttp://hdl.handle.net/10150/214512
dc.description.abstractBottom rot of lettuce, caused by the soil -borne fungus Rhizoctonia solani, can cause economic losses on early season lettuce harvested in November. First evidence of the disease is the appearance of brown, sunken, necrotic areas on the midribs of leaves touching the soil. Under favorable environmental conditions, the pathogen grows from leaf to leaf inside the head. If the fungus invades the leaves of the marketable head it and all similarly infected heads are left in the field resulting in economic losses. Field trials were established to evaluate the potential level of disease control obtainable by applying Ronilan or Rovral to lettuce beds immediately after thinning. No significant reduction in loss of marketable heads was observed in these trials, although there was a trend toward lower levels of bottom rot when either fungicide was in place.
dc.language.isoen_USen_US
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.relation.ispartofseriesSeries P-93en_US
dc.relation.ispartofseries370093en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectVegetables -- Arizonaen_US
dc.subjectLettuce -- Arizonaen_US
dc.subjectLettuce -- Crop diseasesen_US
dc.titleFungicides Evaluated for Control of Rhizoctonia Bottom Rot of Lettuce in 1991 Field Trialsen_US
dc.typetext
dc.typeArticle
dc.identifier.journalVegetable Reporten_US
refterms.dateFOA2018-06-12T13:17:34Z
html.description.abstractBottom rot of lettuce, caused by the soil -borne fungus Rhizoctonia solani, can cause economic losses on early season lettuce harvested in November. First evidence of the disease is the appearance of brown, sunken, necrotic areas on the midribs of leaves touching the soil. Under favorable environmental conditions, the pathogen grows from leaf to leaf inside the head. If the fungus invades the leaves of the marketable head it and all similarly infected heads are left in the field resulting in economic losses. Field trials were established to evaluate the potential level of disease control obtainable by applying Ronilan or Rovral to lettuce beds immediately after thinning. No significant reduction in loss of marketable heads was observed in these trials, although there was a trend toward lower levels of bottom rot when either fungicide was in place.


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