Uso de plantas bioativas no controle da antracnose na cultura do feijão

Abstract

The use of bioactive plants has been the subject of study in the field of agroecology, both for its potential to induce antifungal resistance in the control of plant pathogens. In the search for plants that possess these characteristics, there is the action of dyes with and without grain alcohol C. sylvestris, Tagetes minuta and Schinus terebinthifolius in Carioca bean seedlings on the fungus Colletotrichum lindemuthianum causing anthracnose. The experiment was conducted in greenhouses BOD incubators, and tested the curative effect and protec tor of dyes in concentrations 0,5 %, 1,0% and 2,0% by assessing the intensity of the disease. We also evaluated length of air, root length and dry weight of seedlings. The results revealed that alcohol tinctures of plants studied were effective in controlling fungus C. lindemuthianum, and the curative effect that occurred in all concentrations an d shield the concentration to 2,0%, but grain alcohol demonstrated in control 1,0%. The dyes without alcohol showed no curative and protective effect to anthracnose and did not affect seedling growth, this effect being observed for dyes with alcohol and grain alcohol.