Control of Tulip Black Rot
Symptoms: bulb disease. Stem disc and stem surface, sometimes on the second and third scales, initially yellowish brown and then dark brown irregular disease spots, the surface is rough.
The pathogen Pseudomonasandropogonis (Smith) Stapp belongs to Pseudomonas. The cell is rod-shaped, with a size of 1.9 μ m and 0.8 μ m, and has 1-3 flagella. The optimal temperature of the disease was 20 ~ 25 ℃, and the lowest was 5 ℃.
The route of infection: the infected bulb and the residual body in the soil are the source of infection.
Prevention and cure method: try to soak the bulb in agricultural streptomycin sulfate solution for disinfection.
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Tips for protecting tulips from flowers
1. Before inserting the tulips into the vase, use a sharp knife to cut a slender section at the bottom of the flower branches to facilitate the flowers to absorb water. 2. Unlike most flowers, tulips do not need any other flower nutrients as long as there is enough and fresh water. Change a bottle of fresh cold water every day, keep the flowers away from any direct radiation (sunlight or television radiation), take good care of them, and the flowers will give you a bit of charming scenery in return. Usually, tulips bloom within two or three days and can bloom for a week or more. 3. The tulips are inclined to the light source.
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Control of Brown spot of Tulip
Symptoms: the infected leaf buds are malformed and curled, and the leaves that grow up after the tender buds are damaged become curly. If the environment is humid, a large number of gray mold conidia will be produced on the diseased tissue, which will affect the nearby healthy plants and make the leaves susceptible, so the growth of the bulb will be greatly affected. After the flowers are injured, white or light yellowish brown spots begin to appear, then expand rapidly and wither, or turn brown and dry. Banding also appears on the pedicel, and the conidium sometimes occurs above it. At every stage of the disease
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