Abstract
ABSTRACT: The banana tree (Musa spp.) is the second most produced fruit crop and the first most consumed in Brazil. Among the constraints affecting the crop and causing production losses are the plant-parasitic nematodes. The objective of the present work was to evaluate the effect of neem (Azadirachta indica), Annona muricata (soursop) and A. squamosa (sugar apple) aqueous leaf extracts in the treatment of banana plantlets cv. Comprida, naturally infected by plant-parasitic nematodes, under greenhouse conditions. Four concentrations (0.5, 1.0, 1.5 and 2%) of extracts were tested in addition to the controls (Carbofuran and water); and immersion period of plantlets of 60 minutes. A completely randomized design in a factorial scheme (3x4) with eight replications was used. The experiment was evaluated three months after treatments were applied, observing the sprouting percentage of the seedlings, the nematode’s population in the soil, rhizome and roots, and the reproduction factor. There was a significant interaction between extracts and concentrations for the final population of nematodes in the root, in the rhizome and in the total final population. A reduction of the final population in the soil, root and rhizome and reproduction factor was observed in the plantlets treated with neem, soursop and sugar apple extracts when compared to the negative control (water). KEYWORDS: Musa spp., Alternative control, Pratylenchus spp.
Highlights
EXTRATOS AQUOSOS DE Azadirachta indica E DE Annona spp
The banana tree (Musa spp.) is the second most produced fruit crop and the first most consumed in Brazil
The objective of the present work was to evaluate the effect of neem (Azadirachta indica), Annona muricata and A. squamosa aqueous leaf extracts in the treatment of banana plantlets cv
Summary
Volume 6, Número 3 (jul./set. 2021) pp: 2984-2995. https://periodicos.ifal.edu.br/diversitas_journal/ © Diversitas Journal. Extratos aquosos de Azadirachta indica e de Annona spp. no controle de nematoides da bananeira. Aqueous extracts of Azadirachta indica and Annona spp. in the control of banana nematodes. O objetivo do presente trabalho foi avaliar o efeito da utilização de extratos foliares aquosos de nim (Azadirachta indica), Annona muricata (gravioleira) e A. squamosa (pinheira) no tratamento de mudas de bananeira cv. A avaliação do experimento foi realizada três meses após a aplicação dos tratamentos, observando-se as seguintes variáveis: percentual de brotação das mudas, a população de nematoides no solo, rizoma e raízes, e o fator de reprodução. Observou-se redução da população final no solo, na raiz e no rizoma e no fator de reprodução nas mudas tratadas com extratos foliares de nim, gravioleira e pinheira comparada com a testemunha negativa (água).
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