Before and after flowering apple disease

During the flowering period of apple (from late March to late April), most of the overwintering pests have begun their activities, and natural enemies have also emerged. Apple orchard rot, powdery mildew, spotted deciduous disease, ringworm disease, and hawthorn leafhoppers are the main control objects in apple orchards during this period. General prevention and control should be carried out; the occurrence of fewer, less harmful pests is mainly jujube Diarrhea, aphids, etc., should take preventive measures as appropriate. First, the main pest control technology (1) apple tree rot disease: In the past on the basis of prevention and control, continue to do a good job of prevention and control of apple tree rot disease, can be used 21% Fusheng agent 5 times liquid smear the disease. (2) Leafhoppers and powdery mildew: The preharvest leaves of Hawthorn were budded during the peak period (mid-April of April) and the overwintering hatching period of apple All-jawed cockles, and the peak of the first hatch after hatching (from the end of April to the end of April). At the beginning of May), when the female nymphs averaged 1 to 2 heads per leaf, they immediately carried out comprehensive prevention and treatment. The leaves were sprayed with 20% of the euthanasia suspension agent 2000 times, and 10.2% of Manyuanqing EC or 5% of love could be used. Robinia pseudoacacia EC 2000 times; when the amount of nymphs is relatively large, 1.8% wormwood nemesis or zymogenin 8000 times solution is needed. If powdery mildew occurs seriously and the top bud damage rate reaches 5%, 15% triadimefon 1000 times solution, or 12.5% ​​husk WP can be sprayed with 1500-2000 times, and the effect is good. If leaf aphid and powdery mildew occur at the same time, an acaricide and a fungicide may be selected from the above agents and mixed. (3) Alternaria variotii, mycotic heart disease, and black spot disease: The infection period before and after flowering is the period of infection of these three diseases. It can be sprayed with 1.5% polymyxin WP 300-500 at flowering time or within 7-10 days after flowering. Diluent, or 3% enzymatic wettable powder 600 times, can also be used 70% product run dry suspension 600-800 times solution, in case of rain with 35% more than suspension, or 40% bacteria suspension Agent. (4) Jujube pods: When there are 2-3 larvae of the dinosaur locust on one-meter-long shoots, biological preparations can be used as 0.26% Ludan 1500 times, or diflubenzuron No. 4 suspension 2000 times, or 25%. Yulu No. 3 WP 2000 times to control. (5) Scarab: The beetles that are damaged during the flowering period are mainly apple hair beetle, small blue beetle and black cashew beetle. Shake the tree in the early morning and evening, kill the fallen beetle, or spread the medicine on the ground, or set it up by black light. (6) Locust: After flowering, the main control objects are Spiraea pylon, apple tumour louse, and cotton loquat. The selective pesticide can be sprayed with 25% of the first net suspending agent 8000 times, or 5 before the leaf rolling or at the beginning of rolling. % Acetamiprid WP 5000 times, or 10% imidacloprid WP 3000 times. From April to May, it is a critical period for the prevention and control of the breeding activities around the tree roots. The soil can be exposed and rooted, and then treated with 25% chlorpheniramine EC or 48% Rosin EC 400-600 times. Cover the original soil. Second, the recommended use of pesticide formulations (1) to rot mainly: 21% Fusheng 500 times fluid plus 10% dilute the EC 2000 times solution Jia Mou multidimensional protein fertilizer 800 times, can cure both leafhoppers, white powder Disease, ringworm, spotted deciduous disease. (2) Powdery mildew and gold-grained moths: 15% triadimefon WP 1000 times solution plus 20% dying net suspension agent 2500 times solution plus meiguo Calcium 400 times solution plus 5% diflubenzuron 4 suspension agent 2000 times liquid. (3) Rotavirus and spotted deciduous disease: 70% of the product is dried and suspended (or 42% is sprayed) 800 times of liquid plus 1.8% of Qiqisu EC 8000 times of Jiamusi multidimensional protein fertilizer 600 Times of liquid plus 60% will kill 1500 times the liquid, and governance golden thin moths, leafhoppers, dates, etc.. (4) Mould heart disease mainly: 1.5% polymycin WP 300-500 times solution (70% product run dry suspension agent or 42% spray gram suspension agent 800 times solution) plus 1.8% pebustar 8000 times solution Adding 600 times liquid of probiotics (rare earth nitrate), can treat ring spines disease, spotted leaf disease, leafhopper, improve the antifreeze ability and calcium content of the tree, and promote tree growth. (5) The main size of Chinese wolfberry: 0.26% Green Dan 1500 times (or 5% Diflubenzuron No. 4 Suspension 2000 times) plus 10% Distillation of Emulsion (or 10.2% Manyuanqing Emulsion) 2000 times Add 300-400 times of calcium nitrate solution plus 3% of Kecong Kang WP 600-800 times, and treat the golden-grained fine moth, leafhopper, rotenia, and spotted deciduous disease, and provide calcium to the tree body.

Stainless Steel Grips

Stainless Steel Grips,Stainless Steel Tattoo Grips,Stainless Steel Tattoo Gun Grips

Novelty Hardware Manufacturer , http://www.ywtattooneedles.com