Essential oils of Mentha sp. and Vitis sp. Alternative control of phytopathogens of agricultural and forestry species

Abstract

Biocontrol and the use of extracts and essential oils stand out as important alternatives in the
control of plant diseases. The objective of this study was to evaluate the effect of essential
oils of mint (Mentha sp.) and grape seeds (Vitis sp.) On phytopathogens of agricultural and
forest species. The oils were tested at concentrations: 100; 150; 200; 300; 400; 1000 and 1500
μg.mL-1, added in potato-dextrose-agar medium on phytopathogens Colletotrichum musae;
Colletotrichum gloeosporioides; Fusarium sp. and Pestalotiopsis sp. The controls consisted of
the cultivation of fungi in the absence of the oils. The experiment was a completely randomized
design, in a factorial scheme, with three replications. The mean diameter of the colonies
was measured for four days. There was a reduction in the mycelial growth of C. musae in the
concentrations of 1500 μg.mL-1 of mint oil and in 150 and 400 μg.mL-1 of the oil of grape seeds.
The oils presented fungistatic effect only for C. musae.