Control of cashew black mould by acibenzolar-S-methyl

AUTOR(ES)

Viana, Francisco M.P., Lima, Joilson S., Lima, Francisco A., Cardoso, José Emilson

FONTE

Trop. plant pathol.

DATA DE PUBLICAÇÃO

2012-10

RESUMO

Black mould is one of the most important foliar diseases of dwarf cashew plants in coastal zone of northeastern Brazil. In order to develop a reliable method to control this disease, a field experiment was conducted in the 2008/2009 season to evaluate the effect of acibenzolar-S-methyl (ASM) on disease severity at three different intervals with two, four and six times of applications per season. Copper oxychloride was used every 15 days as a control fungicide. An adult cashew orchard of the susceptible clonal variety CP-76 was used. Black mould severity was estimated by monthly evaluations by scoring each plant according to a 0 to 4 severity scale. Disease severity indexes per plot and per month were used for statistical analyses to compare treatment effects. ASM significantly reduced black mould in the epidemic season tested. Two applications of ASM at 30 days interval were enough to reduce disease in cashew plants.

Documentos Relacionados

• Efeito do acibenzolar-S-methyl sobre murcha-bacteriana do tomateiro
• Silicon, acibenzolar-S-methyl and potassium phosphite in the control of brown spot in rice
• Utilização de Acibenzolar-S-Methyl para controle de doenças foliares da soja
• . Fosfitos, acibenzolar-S-methyl e fungicidas no controle de patógenos biotróficos do trigo
• Evaluation of acibenzolar-S-methyl for the control of Meloidogyne javanica and effects on the development of susceptible and resistant soybean