Bauhinia is also known as full of red, its beautiful tree posture, beautiful leaves, flowers unique. For common early spring flowers. Several common pests and diseases in cultivation management are: 1, Bauhinia leaf spot Symptoms: Occurred mainly on the leaves, the lesions were polygonal, yellow-brown to dark reddish-brown, and dark brown spots were later developed. In severe cases, the leaves are covered with lesions, often connected into pieces, causing the leaves to fall off. Incidence pattern: It is a fungal disease. The pathogens are Cercospora and Crude Caudal. The disease usually occurs from July to September. Mostly from the lower leaves of the first disease, gradually spread upward to expand. Poor growth of plants, heavy onset in rainy seasons, pathogens overwinter on diseased leaves and debris. Prevention and control: (1) Remove leaves from the disease in the autumn, concentrate burning, and reduce the source of infection. (2) 50% carbendazim WP can be sprayed 700 to 1000 times, or 70% Mancozeb WP 800 to 1000 times, or 80% Zn-Zn 500 times. Spraying 10 times a day, even spraying 3 to 4 times have a better control effect. 2. Bauhinia wilt Symptoms: The leaves begin to appear yellow and fall off from the top of the diseased branches. The disease generally begins with individual branches and gradually develops until the whole plexus dies. After peeling off the bark, yellow-brown longitudinal stripes were seen in the xylem, and yellow-brown ring-shaped necrotic spots were seen on the cross section. Incidence of the law: the disease from the underground wound into the roots of plants, damage the vascular tissue of the plant, causing the plant withered to death. The disease is caused by the infection of Fusarium in the fungus. The bacteria can survive in the soil or on the residue of the diseased plants and have a longer survival time. It spreads mainly through soil, underground pests, and irrigation water. The incidence is usually heavier from June to July. Prevention: (1) Strengthen conservation management, increase tree vigor, and increase plant disease resistance. (2) The nursery should pay attention to crop rotation to avoid continuous cropping, or apply 70% pentachloronitrobenzene powder 3 to 5 kg/mu before sowing. The diseased branches and diseased plants that had died of were cut off in time and burned in a concentrated manner, and were disinfected with 70% pentachloronitrobenzene or 3% ferrous sulfate. (3) May use 50% thiram WP 200 times or 50% carbendazim wet powder 400 times, or use 100ml liquid of antimycotic 120 water to irrigate root. 3. Violet blight Symptoms: mainly harm the leaves; reddish-brown lesions of round spots, mostly in the edge of the leaves, and contiguous and expanded into irregular large spots, until most of the whole or reddish brown leaves dead. The late disease department produces black dots. Incidence pattern: it is a fungal disease. The pathogenic bacteria overwinter on the diseased leaf with mycelia or conidia. The plants are dense and susceptible to the disease. It usually begins in June. Prevention: (1) In the autumn, the diseased leaves were removed and burned. (2) After spraying, spray 50% carbendazim 800 to 1000 times, or 50% thiophanate 500 to 1000 times, spray once every 10 to 15 days, and spray 2 to 3 times. The pests mainly include: 1. Codling moth Prevention: (1) Winter and winter worms are removed from the branches in autumn and winter. (2) From late June to July, 800-1200 times of the enemy's larvae were sprayed with larvae at the early stage of hatching damage. (3) Protect parasitoids, natural enemies such as parasitic flies. 2. Brown edged green moth Prevention: (1) In autumn and winter, combined with pouring frozen water, applied in the shallow soil around the plant to extirpate overwintering. (2) When a small amount occurs, the insect leaves are cut off in time. (3) In the early stage of larvae, insecticides such as dichlorvos, trichlorfon, azadirachtin, and methamidophos were sprayed 1,000 times. 3. Locusts Can spray 40% Dimethoate 1000 times spray. Car Parts Blister,Plastic Blister Pack,Blister And Strip Packaging,Vacuum Formed Plastic Packaging taicang hexiang packaging material co.,ltd , https://www.medpackhexiang.com
Common Diseases, Insect Pests and Prevention of Bauhinia