Harmful symptoms. Strawberry botrytis mostly begins to occur after the deflowering. The pathogen first infects the small fruit, so that the fruit surface exposed to the wet soil first develops the disease, and then spreads along the fruit stem to the inflorescence, causing the entire inflorescence to dry and rot; the fruit is invaded and the fruit surface is invaded. There was water-stained, hazel-like patches, dark brown afterwards, and soft rot in the tissues. The fragrance disappeared. In wet conditions, the diseased mice had gray mold. Fruits that are susceptible during the growing season continue to rot after harvest. Occurrence of law. Strawberry gray mold is a fungal disease caused by infection with Botrytis cinerea. The pathogenic bacteria overwintered on the damaged plants and formed spores in late spring conditions, spreading with the wind. The optimum temperature for the development of germs was 20-25°C, the lowest 4°C, and the highest 30-32°C. Conidia germinated at 13.7-29.5°C, but germination was favorable at lower temperatures. The occurrence of diseases is closely related to environmental conditions. Low temperature and high humidity are the leading factors of disease epidemic; planting too dense, applying partial nitrogen fertilizer, overgrowth of plants, lack of light in the garden, continuous rain, poor drainage in the garden, and high humidity on the ground are all suitable for disease occurrence. In the early to middle stage, fruit coloring is the weakest and most susceptible to disease. In addition, the degree of morbidity is also related to the variety. Control methods: 1, selection of disease-resistant varieties. 2. Agricultural control: timely removal of dead leaves and dead leaves in early spring, removal of diseased inflorescence at the early stage of disease, elimination of disease, reduction of bacteria sources, reasonable close planting, balanced fertilization, and proper control of watering to prevent plant growth and excessive humidity in the garden Use plastic film or firewood to cover the ground to avoid direct contact of the fruit with moist soil. 3. Chemical control: starting from the inflorescence exposure, 200 times equal amount of Bordeaux mixture, 50% dexamethasone 500 times solution, 50% diuretic 600 times solution, 75% chlorothalonil 600 to 800 times solution, 50% Sulfamethoxone or 70% thiophanate-methyl 800 to 1000 times fluid, 10% polyoxymethylenemycin wettable powder 100 to 150 g/mu water 75 kg, 50% acetaminophen wettable powder 100 to 135 g/mu + Water 75 kg and other agents, spray once every 7 to 10 days, a total of 3 to 4 times; control greenhouses or greenhouse strawberry gray mold, fumigation can be used antibacterial spirit, 0.1 g per cubic meter of space medication. Author: Yutang Wang Metal Bottle,Metal Drink Bottle,Metal Shaker Bottle,Milk Bottle Washer Machine Jiangsu Hanmo Tecchnology Ltd,.Co , https://www.hanmotecho.com
Strawberries prevent gray mold
Strawberry grey mold, also known as rot disease, is a major disease in strawberry growing areas. Both greenhouse and open field cultivation are prone to occur. It directly harms flower organs and fruits and has a great impact on yield and quality.