Control químico de la antracnosis del mango (Mangifera indica l.) en pre y postcosecha en el Municipio Cedeño, Estado Monagas, Venezuela

ArticleinBioagro · January 2007with54 Reads
Source: OAI

    Abstract

    Chemical control of anthracnose during pre and postharvest in mango, in Cedeño County, Monagas State, Venezuela Currently the most important pathologies of mango in Monagas State, Venezuela, are the spots on the foliage, flower and fruits caused by anthracnose (Colletotrichum gloesporioides Penz). It has been noted that the implementation of a spraying program containing fungicides, is the most viable practice to manage the disease, due to the fact that most of the farms are established with susceptible varieties. The experiment was conducted in farm located in the area of Tarragona, Cedeño county in Monagas State, on mango trees, cultivar Haden. The fungicides Antracol 70 PM, Curacarb 50 WP, and Captan 50 PM were used to conform the following four treatments: T1, application of Antracol eight days prior to floral induction; T2, same as T1 but including a spray of Curacarb when plants initiate blooming; T3, same as T2 plus an extra spray of Curacarb at the end of blooming; and T4, same as T3 plus a spray of Captan during fruit growth. The treatments were applied every 15 days. Additionally, a test was carried out to determine the effect of three fungicides for the control of anthracnose on harvested fruits. The fungicides were Benlate WP, Funcloraz 40 CE and Amistar Xtra. In both assays the control consisted in a treatment without fungicide applications. In the field test, the best results were found in T3 and T4 for the percentage of isolation of Colletotrichum gloesporioides, panicles with fruits, and commercial fruit yield per tree. The second test showed that the fungicides Funcloraz and Amistar achieved the best anthracnose control on harvested fruits. Additional key words: Colletotrichum gloesporioides, fungicides, postharvest management