Plant Disease and Pest Control Techniques and Methods
Here is a comprehensive introduction to the knowledge of plant disease and pest control techniques and methods, covering ornamental plants. Next, the editor will provide an introduction.
Plant Disease and Pest Control Techniques and Methods
If plants suffer from pest infestations, prune the diseased leaves, spray 500 times the concentration of crystalline liquid or Laila sulfophosphate emulsion, and cultivate natural enemies, which play a positive role in controlling the population of pests. For diseases, spray chemicals such as Thiram, carbendazim, or chlorothalonil. Disinfect the potting soil before use, and ensure good ventilation in the growing environment. In late autumn, sweep and burn fallen leaves, and sprinkle wood ash on the surface to prevent diseases.
Common Diseases in Flower Planting
1. Powdery Mildew: Also known as powdery mildew, it affects the growth of roses, raspberries, Euonymus fortunei, and kumquats. It can damage the leaves, stems, and flower stems of flowers, causing a white powdery layer on the affected areas, and severe cases may lead to leaf wilting.
2. Sclerotium rolfsii: It affects roses, jasmines, clivia, small pomegranates, peach coral, orchids, and chrysanthemums. When the disease occurs, the base turns brown and rots, and in severe cases, it turns yellow to brown like rapeseed.
3. Rust: Occurs between July and August, commonly affecting grapes, woody begonias, wolfberries, and chrysanthemums. The leaves have yellow-green spots, followed by dark brown polygonal spots, starting from the lower leaves and then spreading to the upper leaves.
4. damping-off: Also known as猝倒病, it occurs in high-temperature and high-humidity environments. Yellow-brown water-soaked spots appear on the stems, and the affected parts become soft and collapse, with the pathogen coming from soil fungi and spreading rapidly.
5. Leaf Spot Disease: Also known as black spot disease or brown spot disease, it affects roses, camellias, azaleas, raspberries, and chrysanthemums. Spots appear in the center of the leaves, followed by yellowing and leaf drop, often caused by a hot and humid environment.
6. (T-J) Disease: Commonly affects spring orchids, Huai orchids, Cymbidiums, black orchids, and clivia. Initially, red-brown spots appear on the leaves, turning black-brown later, sometimes with a yellow halo around the edges, and the later stage turns gray-white.
Major Pests in Flower Cultivation
1. Scale Insects: Common types include red wax scale, horned wax scale,糠片蚧, raspberry white wheel scale, and Guangfei scale. They severely harm the growth of azaleas and roses, with nymphs often聚集 on tender branches and the backs of leaves, causing leaf drop and诱发ing sooty mold.
2. Aphids: Common aphids include chrysanthemum long-tubed aphid, cotton aphid, peach aphid, and rose flower aphid. Female adults and nymphs gather on tender branches and the backs of leaves, causing leaf curling and诱发ing sooty mold.
3. Spider Mites: Common types include red spider mites, bulbous powder mites, and two-spotted spider mites, which harm various flowers. The affected leaves lose their green color, develop spots, curl up, and in severe cases, become scorched.
4. Whiteflies: Common types include greenhouse whiteflies and orange whiteflies. Adults and nymphs gather on the backs of leaves, causing leaf drying and诱发ing sooty mold.
Plant Disease and Pest Control Techniques and Management Methods
1. Pests: Promptly prune and burn diseased branches and leaves. For scale insects, spray 500 times the concentration of crystalline liquid or Laila sulfophosphate emulsion. For aphids, protect natural enemies or use yellow sticky traps to kill them. For spider mites, cultivate natural enemies to control the population of pests.
2. Diseases: For powdery mildew, spray Thiram, carbendazim, or chlorothalonil. Disinfect the potting soil before use, ensure good ventilation in the growing environment, and promptly prune diseased branches. In late autumn, sweep and burn fallen leaves, and sprinkle wood ash on the surface to prevent damping-off. For damping-off, sprinkle wood ash on the surface of the potting soil, or use 1500 times the concentration of mancozeb solution for灌溉.
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