Alternative control of Lasiodiplodia theobromae with vegetable oils

Abstract

In the formation of an ecological conscience it is imperative to seek alternative measures of
disease control, such as the use of natural products, efficient and of low environmental impact.
With this, this work aimed to evaluate the effect of vegetable oils on the development of Lasiodiplodia
theobromae. The evaluations were performed in Petri dishes containing the BDA medium
supplemented with star anise, clove, melaleuca and pomegranate oils at concentrations
of 0.0%, 0.2%, 0.4% and 0,6%. The mean mycelial growth (CMM), mycelial growth rate index
(IVCM) and percentage of growth inhibition (PIC) were obtained from daily mean mycelial growth
values. The data were submitted to analysis of variance and the means compared by the
Tukey test. It was verified that the oils of star anise, clove and melaleuca presented effective
fungistatic action on L. theobromae, indicating potential of control.