Cymbidium Common Disease and Pest Control Methods
The editor will tell you about the contents of the Cymbidium clinic, the common disease and pest control methods of Cymbidium, please see the detailed introduction below.
Common diseases of Cymbidium include: Cymbidium sclerotinia disease, Cymbidium mosaic disease, and Cymbidium necrotic spot disease.
① Cymbidium sclerotinia disease. The pathogen invades from the leaf sheath, which turns light brown or light yellow-brown, then invades the stem base and bulb, causing rot, leading to poor plant growth and gradual withering.
Control methods: Propagate with disease-free bulbs, apply more organic fertilizer, less nitrogen fertilizer, and properly control the amount of watering to prevent the soil from being too wet, which can prevent the occurrence of sclerotinia disease; after the disease occurs, promptly remove the diseased plants and destroy them in a centralized manner, and spray with 70% methyl thiophanate-methyle 1000 times liquid or 50% carbendazim 1000 times liquid.
② Cymbidium mosaic disease. Brown streaks appear on the leaves of Cymbidium, and chlorotic patterns appear on the petals, with severe leaf distortion.
Control methods: Spray promptly with 40% omethoate 1500 times liquid or 2.5% cypermethrin 3000 times liquid to eliminate vectors such as aphids, and promptly remove and destroy diseased plants.
③ Cymbidium necrotic spot disease. Necrotic spots or annular spots or mosaic, necrotic spots appear on the leaves of Cymbidium.
Control methods: Disinfect the bulbs before sowing; during the growing period, use 40% omethoate 1500 times liquid to kill aphids, or use furan dan and other pesticides to kill nematodes; when diseased plants are found, promptly remove and destroy them.
The main pest危害ing Cymbidium is the oil葫芦. Both the adults and larvae of oil葫芦 can damage the roots, stems, and leaves of Cymbidium. Adults like to hide in shady, moist, loose soil or thin layers of accumulated grass, coming out to forage at night and escaping when startled, laying eggs in the soil at the edges of ditches and grass piles.
Control methods: ① Control overwintering eggs by turning the soil in winter.② Place bait in the grass piles to attract and kill adults. The bait is usually made of 5 kilograms of wheat bran, rice bran, and sorghum bran, fried to a golden brown and mixed with 1000-2000 milliliters of 90% dimethoate 1000 times liquid or 50% phoxim 1000 times liquid, then mixed with fresh grass placed in places where oil葫芦 often appear and hide to attract and kill.
The above green plant flower experience about the common disease and pest control methods of Cymbidium may bring you help in life!