EXTRATO DE Solanum lycocarpum NO CONTROLE DE DOENÇAS FOLIARES NA CULTURA DO MILHO

Abstract

Corn cultivation plays an important role in agribusiness world, but it is subject to a large number of pathologies that directly influence the final production. In this sense, the this work objective was to evaluate the potential of the lobeira (Solanum lycocarpum) leaf extract in the management of foliar diseases in the corn crop as white spot (Pantoea ananatis), common rust (Puccinia sorghi) and ocular spot (Kabatiella Zeae). Two commercial fungicides (F) [pyraclostrobin + epoxiconazole (F1) and mancozeb (F2)], and four concentrations of S. lycocarpum extract (0, 1, 2.5, and 5 μg / mL) were applied to corn plants. The experiment consisted of twelve treatments (T1 - without F, extract 0 μg / mL, T2 - without F, extract 1 μg / mL, T3 - without F, extract 2.5 μg / mL, T4 - without F extract 5 μg / mL, T5 - F1, extract 0 μg / mL, T6 - F1, extract 1 μg / mL, T7 - F1, extract 2.5 μg / mL, T8 - F1, extract 5 μg / mL, T9 - F2 , Extract 1 μg / mL, T10 - F2, extract 1 μg / mL, T11 - F2, extract 2.5 μg / mL, T12 - F2 extract, 5 μg / mL extract). The common rust severity, white spot and ocular spot was evaluated in four plants per plot using a notes scale. Thus, it was concluded as an alternative management for the foliar diseases complex studied, the fungicide Mancozeb together with the S. lycocarpum 2.5 μg / mL extract is more recommended for use in corn crop reducing the severity.