Clonostachys rosea strains have novel usefulness as inoculants of plants promoting plant vigor, health, growth, yield and a reduction of competitive stress caused by other fungi when used alone or sequentially with many fungicides in an integrated pest management system (IPM). Seed and foliar uses are shown to inoculate and subsequently achieve endophytic colonization of the portion of the plant treated. While the germinating conidia of this organism has been shown to tolerate several fungicide groups, the established mycelium of Clonostachys rosea is significantly more tolerant to systemic fungicides facilitating use in seed and foliar applications. Seed treatment and colonization may occur at any time after harvest resulting in endophyte enhanced seed that ignores or is marginally altered by other fungal organisms and may be suitable for Feed, Food and Seed uses.La presente invención se refiere a un método para la colonización endofítica de un sitio de una planta, caracterizado porque comprende los pasos de: inoculalción del sitio de la planta con Clonostachys rosea； y después tratar el sito con un fungicida químico por lo menos aproximadamente 48 horas después de la inoculación, en donde la biomasa de Clonostachys rosea se incrementa en comparación con el tratamiento del sitio concurrentemente con el fungicida químico.
