Poplar seedling rust prevention and control method
(l) Proper close planting, control of irrigation and nitrogen fertilizer application, and enhancement of disease resistance of seedlings. (2) The prevention and treatment time should be timely and early prevention. From the initial stage of disease (in June), spray 0.3--0.5 Baume degree of lime sulfur or dichlorphyrin 200 times every 10-15 days. (3) The control effect of 20% Trifenin Emulsion 200ppm is significant, and the interval between application is 25-30 days. General application of three times can effectively control the rust hazards. Smart Vacuum Cleaners,Handheld Vacuum Cleaners,Rechargeable Vacuum Cleaners,Easy Dust Smart Mops ChangChun E-vida Technology Co.,ltd , https://www.evidatech.com
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