Biofumigation, a control method for soil-borne diseases | La biofumigation, une methode de lutte contre les maladies du sol
2007
Michel, V. | Ahmed, H. | Dutheil, A.,Station de recherche Agroscope Changins-Waedenswil ACW, Conthey (Switzerland). Centre des Fougeres
The biofumigation is a biological method that aims the reduction of the number of pathogens, pests, and weed seeds in the soil. It is based on the use of plants with a high glucosinolate content, mainly cruciferous species. During the decomposition of these plants, glucosinolates are transformed in isothio- and thiocyanates. Latter substances are volatile and toxic to a number of soil organisms. The effect of the biofumigation on verticillium wilt, a soil-borne disease, was tested in a series of field and pot trials. The number of microsclerotia, organs of survival of verticillium wilt in the soil, was reduced between 19 and 74%. The factors influencing the efficacy of the biofumigation are discussed.
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