Wheat scab control

Types and methods of use of pesticides to prevent and control wheat scab

(1) The general dosage of carbendazim wettable powder spray is an effective concentration of 0.05~0.1, that is, 50 wettable powders plus water Diluted 500~1000 times, the duration of the agent is 7~10 days. It has no harm to wheat plants, the control effect can reach 80~90%, the disease prevention and yield increase rate can generally reach 20~40%, and the diseased grain rate can be reduced by more than 70%. Sometimes 0.05 carbendazim mixed with urea is more effective in disease prevention than carbendazim alone.

(2) The concentration and method of spraying thiophanate methyl wettable powder are the same as carbendazim.

(3) When using sterilizing pill wettable powder spray, it should be noted that sterilizing pill only has a preventive effect and has no therapeutic effect. This agent has a good concurrent treatment effect on wheat rust. The concentration used is 0.25, that is, 50% wettable powder diluted 200 times with water. The control effect is generally 71~80%.

(4) Thiram (TMTD) is a 50% wettable powder, and the concentration used is 0.2~0.3, that is, dilute 166~250 times with 50% wettable powder and water.

(5) Thiram is safe for humans and animals, has no harmful effects on wheat plants, and has a control effect of about 70%, but its sustained efficacy is short, generally only 3 to 5 days. Mixing thiram and carbendazim into a mixture can reduce the dosage of carbendazim. Generally, 25 carbendazim and 15 thiram are mixed into a 40 gram mixture and diluted 500 times with water for spraying. The control effect is about 70%.