Control Methods and Technical Key Points for Chive Blight
Treat seeds with 25% metalaxyl at 0.3% of the seed weight. After disease onset, use 64% oxadixyl mancozeb at 600 times dilution, 69% dimethomorph mancozeb at 600 to 800 times dilution, 50% iprodione at 500 times dilution, and 77% copper hydroxide at 600 to 700 times dilution, applied alternately, once every 5 to 7 days, for 2 to 3 treatments.
Treat seeds with 25% metalaxyl at 0.3% of the seed weight. After disease onset, use 64% oxadixyl mancozeb at 600 times dilution, 69% dimethomorph mancozeb at 600 to 800 times dilution, 50% iprodione at 500 times dilution, and 77% copper hydroxide at 600 to 700 times dilution, applied alternately, once every 5 to 7 days, for 2 to 3 treatments.