Treatment dose of cotton pests and diseases

Use chemical pesticides to prevent cotton pests and diseases must grasp the appropriate dose. If the dose is too large, it can easily cause injury to cotton; if the dose is too small, the control effect cannot be achieved. Therefore, the use of chemical agents to control cotton (including other crops) pests and diseases, must use the appropriate control dose.

Cotton wilt can be treated with 40% carbendazim or 65% mancozeb wettable powder 500 to 800 times foliar spray.

In the early stages of the onset of Verticillium dahliae, 40% Carbendazim 1000 times can be used to irrigate the roots (0.5 kg/plant), or 500 times of the fulvic acid plus 500 times of the anti-dead fungus can be sprayed.

In the early stage of disease, cotton red leaf blight can be sprayed with 2% potassium dihydrogen phosphate or potassium chloride solution, sprayed once every 7 days, and sprayed 2 or 3 times, which can reduce the incidence of red stem blight.

When the cotton cocoon rolling leaf strain rate reached 5% to 10% when the prevention and treatment. Use 25% Zolvav ECG 1000-1500 times, 4.5% Effluent Chrysanthemum 1000-2000x, 50% Profenofos 1000 ~ 1500x, 10% Imidacloprid WP 2000~3000X. spray.

The first generation of 100 young larvae of Helicoverpa armigera of cotton bollworm and the fourth generation of 100 larvae of 100 young larvae of cotton bollworm were treated. Select 35% of endosulfan EC 1000-1500 times, 20% of Methodic EC 1500-2000 times, 2.5% of KDF 5000 times, 50% of Propofol 1000-1500 times, 2.5% of cyanogen bromide Chrysanthemum EC 1000 times spray control.

Cotton leafhopper (Red spider) 10% strong Liuyangmycin EC 1500~2000 times solution, 20% Broom net EC 1000 times solution, 20% Xanthone EC 2000 times, 1.8% Abamectin ) Emulsion can be sprayed evenly over 1500-2000 times.

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