There are many kinds of dust agents commonly used for selecting suitable dust agents. According to the types of diseases, suitable dust agents should be selected. 1. To control cucumber downy mildew and tomato late blight, choose 10% anti-mildew or 5% chlorothalonil dust. 2, control cucumber anthracnose, black heart disease, use 5% of chlorothalonil or 12% of carbon charred dust agent. 3, control cucumber bacterial angular spot, use 10% of the B drop dust agent. 4, prevention and treatment of vegetable gray mold, leaf mold, early blight and late blight, choose to benefit from dust. Grasp the spraying time in sunny days should be applied in the morning or early evening; cloudy, rainy days can be sprayed; it is best to apply after closing the shed in the evening, the best effect. Spraying should start before or at the onset of the disease, and spray it every 7 days thereafter. Do a good job before the dusting powder preparation before you choose the duster, should adopt domestic harvest type 5 or 10 hand powder duster. Before application, the shed was closed, and then the amount of 1 kg/mu was used. The pesticide was placed in a duster kit and the powder was weighed at about 200 grams per minute. Using the right method of dusting, no matter the greenhouse or the greenhouse, you should start spraying powder from the inside of the shed and spray it back until you exit the door. Do not spray the powder directly against the vegetables when spraying, should be sprayed into the shed interior space, so that dust particles in the space to form dust, and diffuse for a long time, evenly sinking in vegetables. If it is sprayed in the morning or at noon, close it for 2 hours after spraying and open the door. If it is sprayed in the evening, it is best to seal the shed for one night and spray it before and after the sunrise the next day. Note that the dusting speed of the duster must be no less than 35 rpm for the Type 5 duster and no less than 50 rpm for the Type 10 duster. Tilmicosin Dosage,Tilmicosin Antibiotics,Tilmicosin Animal Health,Tilmicosin Pneumonia Shandong Shengli Bioengineering Co., Ltd , https://www.shenglipharm.com