Ningxia Goji Berries,Chinese Wolfberry,Healthy Food Dried Fruit Nuts Co.,Ltd , http://www.chdriedfruits.com
Timely treatment of tomato leaflet disease
Cause of the disease: There are many causes of tomato lobular disease, such as thrips damage, 2,4-D and other hormones are too high concentration and spray concentration of a certain pesticide. However, tomato lobular disease is mostly due to the fact that under low temperature conditions, the soil is relatively dry, and the release of zinc in the soil is restricted or cannot be released without being absorbed by the plants. In particular, new varieties of tomatoes such as “903â€, “906†and “Baofeng 101†have been widely promoted in recent years. The physiological characteristics of these new varieties of tomatoes, such as zinc, will not satisfy the zinc supply. Zinc deficiency develops as the leaves grow smaller, dwarf, curled or chicken-like. This is zinc deficiency lobular disease. Once the temperature rises and the soil temperature rises, the gradual release of zinc will gradually improve the plant's growth. Control methods: (1) During the seedbed period, for the seedlings that do not have flower buds, the temperature of the shed should be increased, so that the daily temperature can be kept above 20°C, and the night temperature should be maintained at about 15°C. At the same time, the soil on the seedbed should be non-moist and dry to keep the soil moist. If there is a lobular phenomenon, immediately apply 1200 to 1500 times of lozenge (high zinc type). (2) When the seedlings are transplanted to the greenhouse and returned to green, foliar nutrient solution containing zinc, such as Phytocin, Porphyrin, or Green Fenwei, shall be timely sprayed. Among them, 4% of zinc containing procyanidins has the best efficacy. The general requirement is to spray once every 10 days. Even if it is sprayed twice, tomato will not show lobular disease.