Management of grapewine downy mildew by new fungicide molecule upf 509 (azoxystrobin 8.3 % w/w + mancozeb 64.7 5 w/w) along with Pseudomonasfluorescens

摘要

Grapevine (Vitis vinifera L.) is an important commercial fruit crop and one of the most widely cultivated crops in temperate, sub-tropical and tropical regions of the world. Grapevine cultivation offers a great economic potential due to its higher yield and monetary returns owing to the export to Gulf, European countries and to some extent West Asian countries. Fungal diseases viz" downy mildew [Plasmopara viticola (Berk and Curtis) Berlese and De toni], powdery mildew [Uncinula necator (Schw.) Burn]and anthracnose [Gloeosporium ampelophagum (Pass) Sacc. (Perfect stage: Elsinoe ampetina (DeB) Shear)] are found to be the major constraints in grapevine cultivation. Recently, several fungicides viz" propicanozole, fenarimol, bupirimate, penconozole, dimethomorph, triademeton, pyrazophos, hexaconazole, chlorothalonil and flusilazole were introduced in India for control of powdery mildew pathogens.