Diseases and pests constitute a major agricultural problem. The present invention proposes new products with biocidal activity obtained from endophytic fungi. More specifically, the invention relates to extracts obtained from endophytic fungi of Artemisia spp., which exhibit biocidal activity of interest in agriculture, making them an alternative to traditionally used chemically synthesized products. Specifically, the biocidal activity is exerted against pathogenic fungi that affect economically important crops. These extracts are derived from natural sources, can be obtained in large quantities through cultivation in bioreactors, and can be used in product formulations. plant protection products directly or subjected to appropriate techniques to obtain fractions/subfractions/compounds with defined activity.