Prevention and Control Techniques of Flower Fungal Diseases

Fungal diseases are the most common diseases occurring in flowers, accounting for about 90% of flower diseases. Common powdery mildew, anthrax, gray mold, black spot and so on. One, damage symptoms 1, powdery mildew: occurred in the rose, chrysanthemum, cineraria, gerbera and so on. The main damage is young leaves, buds, shoots, buds and pedicels. A chlorotic spot appeared in the affected area at the early stage of the disease, and later it gradually turned into a white powder, and later lesions turned gray. Diseases often cause dwarf flower plants, young shoots are bent, flowers are small and can not be opened, and the leaves are uneven. In severe cases, leaves curl, dry, and even the whole plant died. 2. Anthrax: Occurs in orchids, clivia, and cyclamen. The main damage leaves, but also infect stems, shoots, buds, fruits and other parts. In the early stage, the onset began from the tip of the leaf tip and leaves. Near-circular lesions appeared on the leaf surface. The edges of the lesion were mostly purple-brown. The center was light brown or off-white. Black dots appeared on the lesions at the late stage, showing a rosy-like appearance. Arrangements can cause dead leaves when severe. 3, gray mold: occurs in the cyclamen, cineraria, rose, gladiolus, azaleas, poinsettia, lilies, etc., mainly damage leaves, stems, flowers and fruit and other parts. In the early stages of the disease, water-stained spots often appear, and they gradually enlarge and become brown or purple-brown spots. When the weather was wet, gray hairs appeared on the lesions, and the whole plant died in severe cases. 4, black spot disease: the main damage canna, rose and so on. After the onset of disease, a nearly circular or irregular black, purple brown or dark brown lesion appeared on the leaves, and the leaves turned yellow and fell off in severe cases. 5, brown spot: The main damage poinsettia, azalea, rose, chrysanthemum, gerbera, cockscomb and so on. After the onset of the disease, round or near-circular dark brown and brown lesions appeared on the leaves, and in severe cases, a large number of focal leaves could be caused. Second, the prevention and control method 1, flower growth period, with 65% dexamethasone WP 400 to 600 times the liquid, sprayed every 7 to 10 days 1, continuous spray 3 to 5 times can play a control effect. 2, timely cut diseased branches, diseased leaves, and concentrated destruction. The litter is completely removed in winter and spring. 3, pay attention to ventilation and light, reasonable watering and fertilization, improve resistance to disease. 4. Spray 50% carbendazim 500-800 times or 75% chlorothalonil 600-800 times in the early stage of disease. The control of botrytis can be used 70% chloronitrobenzene and 80% zein zinc equal mix, soil disinfection, each medication 8 to 10 grams.

OEM Plastic Products

Eye Drop Simulator,Medical Gifts,Sticky Note Dispenser

Hongrui Medical Devices Co., Ltd. , http://www.zzcprtrainingmodel.com