MySheen

Grey mold of tulips

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, Like warm, humid, cool summer, slightly dry environment, should be rich in humus, well-drained sandy loam. Tulip is an important spring bulb flower, short and sturdy varieties should be arranged in spring flower bed, bright and dazzling. High-stem varieties are suitable for cutting flowers or arranging flower borders, and can also be planted on the edge of the lawn. Medium and dwarf varieties are suitable for potted plants to embellish the indoor environment and add joy to the atmosphere.

Tulips, also known as lotus and grass musk, are native to the high mountains of Iran and Turkey and are adapted to cold and humid winters and dry and hot summers. Like warm, humid, cool summer, slightly dry environment, should be rich in humus, well-drained sandy loam. Tulip is an important spring bulb flower, short and sturdy varieties should be arranged in spring flower bed, bright and dazzling. High-stem varieties are suitable for cutting flowers or arranging flower borders, and can also be planted on the edge of the lawn. Medium and dwarf varieties are suitable for potted plants to embellish the indoor environment and add joy to the atmosphere.

Botrytis cinerea, also known as tulip blight, is a common disease in greenhouse. The disease harms tulip leaves and flowers, causing leaf blight and flower rot.

Symptoms: the seedling stage is damaged, which often causes the plant to grow curved and eventually die. Susceptible leaves and pedicels produce light gray spots with brown edges. White or yellowish brown disease spots are produced on the susceptible flowers, which wither or turn brown and wither with the rapid expansion of the disease spot. Under moist conditions, the disease produces a gray mold layer, that is, the conidia of the pathogen. The corm was killed, the whole plant was dwarfed, the base of the stem and the outer scales of the corm rotted, and produced many light black or dark brown sclerotia.

Pathogen: the pathogen is BotrytistulipaeLind., which belongs to the subphylum Trichoderma, Trichospora, Trichospora and Botrytis.

The law of disease: the pathogen overwintered in the soil with sclerotia and produced conidia to infect the new strain when the conditions were suitable in the next year. High air humidity is the main condition for the occurrence and spread of the disease.

Prevention and treatment: ① reduces the source of infection: remove diseased corms before planting. When diseased flowers and leaves are found during the growing period, they are cut off in time and destroyed centrally. ② bulb treatment: soak the bulb 30min with 0.3% Mel 0.4% cupric sulfate before planting, then wash it with water, dry it and then plant it. ③ chemical control: during the growth period, spray 50% benzoate wettable powder 2500 times, or 50% colloidal sulfur agent 200 times, once every 10-15 days, spray 2-3 times.

 
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