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In the current context, in which the European Union, through various projects, requires the reduction of the consumption of pesticides it is necessary to investigate some different products to control the Phytophthora infestans potato blight, biological ones, that have the role of improving the structure and health of the soil, avoiding contamination of it but also of groundwater with synthetic active substances. Potato production is diminished by the presence of weeds, pathogens and pests. One of the most importa...

Tomatoes represent the host plant for the pathogen Phytophthora infestans. Together, as plant and pathogen, create a system named by A.R.ROBINSON pathosystem [1]. The plants are known as producers of many metabolites such us therpenes, alkaloids, flavonoides and amino acids. From this point of view naturally occurring substances present in different plants can represent a continuous resource of biological agents. Late blight of potato (Phytophthora infestans Mont. de Bary) is a serious threat to potato production ...