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Abstract

The present disclosure concerns methods of using novel bacterial strains of 0617-T307, 0917-T305, 0917-T306, 0917-T307, 0118-T319, 0318-T327, and 0418-T328, and the cell broth and novel metabolites produced from the bacterial strains, to inhibit the growth of a variety of pathogenic microorganism for a variety of crops. This method is effective against a broad range of fungal pathogens, including Pythium aphanidermatum, Podosphaera xanthii, Plasmopara viticola, Erysiphe cichoracearum, Pseudoperonospora cubensis, Clarireedia jacksonii, Microdochium nivale, and Podosphaera leucotricha. The methods include the application of Formula (I) in various formulations to inhibit pathogenic microorganisms in crops such as cucurbits, legumes, leafy greens, root vegetables, oilseed crops, ornamental plants, fruit crops, and turfgrass. The methods include the use of an agricultural composition including a novel, potent antimicrobial metabolite produced from the bacterial strains corresponding to the compound having Formula (I):

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