Prevention and control measures of carnation virus disease
a. The imported carnation seedlings should be strictly quarantined to avoid the spread of infected seedlings. b. In the large-scale production base, the virus-free mother garden was established by using stem tip virus-free seedlings for strips propagation. c. Try to remove the susceptible plants and reduce the infection source. In the process of picking, cutting flowers and pruning in cultivation management, attention should be paid to the disinfection and cleanliness of operating tools to avoid contact and infection.
d. Pay attention to the prevention and control of vector aphids. 1500 times of 50% aphid pine wettable powder or 5000 times of 2.5% deltamethrin EC can be sprayed to kill aphids. e. After heat treatment, the growth environment temperature of the infected plants could be controlled at about 30 ℃ for 5 days, so that the plants could gradually adapt to the high temperature, and then the ambient temperature was adjusted to about 38 ℃ for 2 months.
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Carnation white silk disease
Shanghai, Hangzhou. [symptoms] the disease occurs at the base of the stem near the soil surface and turns brown and rotten; the diseased stem tissue is cut and tea-brown or dark-brown rot develops to the center from the outside; the xylem also changes color upward, and the pinnately radiating white hyphae can spread to the surrounding soil surface; then sclerotia the size of initially white and later yellowish-brown rapeseed is formed on the diseased part and surrounding soil surface mycelia. After the plant is susceptible to disease, the whole plant usually loses and dies. On the cutting bed, wet rot occurs from the healing and forming area of the cuttings, which can also cause serious roots.
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Harvest and preservation techniques of carnation cuttings
[Other middle names] Carnation, Carnation Plant height 30~70 cm. Stems clustered, base woody, nodes obvious, with white powder. Leaves simple, opposite, linear, apex obtuse, base rigid, both surfaces powdery. [Cuttings Harvest] The harvesting site is the top branch of carnation. In order to achieve the desired reproductive effect,
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