CHEMICAL CONTROL OF MANGO BLOSSOM DISEASES AND THE EFFECT ON FRUIT-SET AND YIELD

Blossom sprays with iprodione, chinomethionat, prochloraz manganese ch loride, triadimenol, copper oxychloride, mancozeb, flusilazol, calcium polysulfide, and pyrazophos, applied fortnightly, were evaluated over two seasons (1989-1991) for the control of powdery mildew (Oidium man giferae), blight (Nattrassia mangiferae), and blossom spot (Alternaria alternata and Colletotrichum gloeosporioides) of mango (Mangifera ind ica). Blossom sprays with the systemic fungicides flusilazol or pyrazo phos resulted in significantly better disease control and consistently higher fruit set and yield than nontreated controls.