Sweet potato black rot, available 50% Wettable powder 500-1000 mg/kg seed potato solution
for 10 minutes.
Wettable sulphur 2 g/litre,
copper oxchloride- 3 g/litre of water may be sprayed in April and October.
Other crop disease prevention and control of tobacco, mulberry powdery mildew,
available 50% Wettable powder 300-400 mg/kg of liquid spray;
The high 3, beginning flowering plants, 5 to 7 days after
spraying the second time available per acre 50% Wettable powder 75-100 grams.
Disease ChengFa periods, the peanut leaf spot, can use 50% Wettable powder 200-250 mg/kg liquid spraying,
interval of 2 weeks, spray 3 times;
Wheat and barley diseases prevention and control of wheat and barley smut,
available 50% Wettable powder 200 grams of 4 kg
seed 100 kg of water, then stuffy 6 hours;