APPLICATION OF A CELLULAR EXTRACT OF ONE OR MORE MICROSCOPIC ALGAE OF THE AMPHIDINIUM GENUS FOR FUNGICIDAL AND/OR BACTERICIDAL ACTIVITY THEREOF AGAINST FUNGI, OOMYCETES AND/OR PATHOGENIC BACTERIA OF PLANTS AND CROP SEEDS Russian patent published in 2021 - IPC A01N65/03 C12N1/12 

FIELD: biotechnology.

SUBSTANCE: group of inventions relates to biotechnology and can be used in agriculture. The method for fighting pathogenic fungi, oomycetes and/or bacteria of agricultural crops and/or seeds involves producing a cellular extract of one or more microscopic algae of the Amphidinium genus by collecting fresh cells of one or more microscopic alga(e) of the Amphidinium genus at a concentration of cells from 5∙10⁴ cells/ml to 5∙10⁶ cells/ml, optionally freezing and/or lyophilising said cells and resuspending said lyophilisate or said fresh or frozen cells in an inorganic or organic solvent at a mass ratio from 1:200 to 1:50. The produced cellular extract of microscopic algae of the Amphidinium genus comprises amphidinol 18 or amphidinol 19, preferably amphidinol 18, and is applied to the agricultural crops and/or used to coat said seeds. The microscopic algae of the Amphidinium genus therein is Amphidinium carterae.

EFFECT: group of inventions provides a possibility of increasing the yield of agricultural plants.

9 cl, 10 dwg, 8 tbl, 14 ex