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Revista Brasileira de Fruticultura

versão impressa ISSN 0100-2945

Resumo

FERREIRA, Elzivan Felix et al. Use of plant extracts on control in vitro of Colletotrichum gloeosporioides penz. Collected in papaya fruits (Carica papaya L.). Rev. Bras. Frutic. [online]. 2014, vol.36, n.2, pp.346-352. ISSN 0100-2945.  http://dx.doi.org/10.1590/0100-2945-223/13.

Several alternatives have been studied and used in the control of plant diseases, in order to achieve the needs of producers and consumers desiring to reduce the use of pesticides. Thus, the objective of this study was evaluating the activity of plant extracts Azadirachta indica A Juss., Annona muricata L. and Lippia alba (Mill) N. E. Brown. in controlling of Colletotrichum gloeosporioides Penz. in vitro. The experiment was conducted in State University of Southwest Bahia, campus of Vitoria da Conquista city, State of Bahia, Brazil. Aqueous extracts of leaves of soursop leaves and lemongrass, and aqueous extracts of neem seeds and soursop were used to inhibit mycelial growth of pathogen of anthracnose from papaya fruits. The antifungal activity of the extracts was determined by measuring the mycelial growth of cutures. The experimental design was CRD in factorial (3x3x3) with four repetitions in both experiments. The results suggested inhibitory action of the leaf extract of lemongrass and the seed extract of soursop.

Palavras-chave : Alternative control; soursop; neem and lemongrass.

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