Abstract
Studies regarding vegetal extracts and essential oils from native plants have demonstrated efficiency in controlling phytopathogens of fungitoxic action, hampering the development of phytopathogenic fungi. This study aims to determine the fungicide effect of vegetal extracts during the mycelial growth of the fungus Sclerotinia sclerotiorum (Lib.) de Bary. The experiment was conducted in the phytosanitary laboratory of the UEMS in the unit of Cassilândia-MS, Brazil. A completely randomized design was used with a factorial scheme 4 x 5, comprising leaves, bark, and branches of cinnamon and mint leaves in the concentrations of 0, 2.5, 5.0, 10, and 20%, with six repetitions per treatment. The evaluations were made 24, 48, and 96 hours after the transplant, obtaining the diametrically opposite means with a caliper to determine the measures. The results indicate a higher inhibitory efficiency against fungi development using extracts of mint leaves and cinnamon leaves and branches.
Highlights
Studies regarding vegetal extracts and essential oils from native plants have demonstrated efficiency in controlling phytopathogens of fungitoxic action, hampering the development of phytopathogenic fungi
Material and Methods The experiment was conducted in the phytosanitary laboratory of the Mato Grosso do Sul State University UEMS (Universidade Estadual de Mato Grosso do Sul), in Cassilândia/MS, Brazil, from August 2021 to July 2022
The extracts of mint leaves and cinnamon branches presented inhibitory activity in all dosages tested, inhibiting the mycelial growth of pathogens by 100% (Figure 1)
Summary
Studies regarding vegetal extracts and essential oils from native plants have demonstrated efficiency in controlling phytopathogens of fungitoxic action, hampering the development of phytopathogenic fungi. This study aims to determine the fungicide effect of vegetal extracts during the mycelial growth of the fungus Sclerotinia sclerotiorum (Lib.) de Bary. The results indicate a higher inhibitory efficiency against fungi development using extracts of mint leaves and cinnamon leaves and branches. O presente trabalho objetivou determinar o efeito fungicida de extratos vegetais no crescimento micelial do fungo Sclerotinia sclerotiorum (Lib.) de Bary. Extracts of cinnamon (Cinnamomum cassia) and mint (Mentha arvensis) for the fungi control of Sclerotinia sclerotiorum. Sclerotinia sclerotiorum (Lib.) de Bary, which causes damages in many important crops with varied symptoms (Bardin & Huang, 2001; Bolton et al, 2006). The avoidance of contaminated seeds is needed, and the use of plant species resistant to the pathogen, such as corn, white oat, or wheat, to degrade sclerotia using natural enemies (Leite, 2005)
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