Control of mildew in vines with cinnamon extract and catalase activity in organic production

Management with synthetic fungicides in the control of phytopathogens viticulture can cause environmental pollution and contamination residues grape cluster. The objective this study was to verify effect aqueous cinnamon extract on vitro vivo Plasmopara viticola catalase activity ‘Isabel Precoce’ vines. treatments used were: (ACE) at concentrations 0.12; 0.25 0.50% plus 0.25% vegetable oil (VO); being standard VO (0.25%), Bordeaux mixture 1:1:100 (lime: copper sulfate: water) water only. germination tests P. sporangia were carried out incubation periods 4 24 hours pathogen contact treatments. In addition, area under disease progress curve (AUDPC) enzyme estimated plants grown greenhouse. results indicated that 0.12%, 0.5% ACE reduced viticola. relation AUDPC, dose associated 65% 67% leaf discs vines greenhouse, respectively. This fact is related induction CAT provided by 2HBA, 2HAI 4HAI. Thus, it be said downy mildew vine.