Dried cabbage is also called rotten skin, no abnormal appearance, but the inner ball is degraded, can not be eaten, consumers lose a lot.
Causes of the disease Due to root dysfunction or other causes, calcium cannot be delivered to the growing tip, causing physiological disorders. A serious deficiency of active manganese in the soil can also be caused.
Symptom recognition occurs mostly in the rosette period, the edge of the heart leaves is dry, curled inward, and growth is inhibited. At the beginning of the ball, the edge of the leaf is water-immersed, and then becomes yellow translucent to yellow-brown scorch, and there is no abnormal appearance after the ball is formed. The upper part of the 3-4 layers of the inner middle of the section is dark brown water stained paper. The disease leaves are rotted, have rancid taste, short stems and vascular bundles are normal, and can be distinguished from soft rot and other diseases.
Disease conditions Salt-alkali soil, pouring industrial sewage, applying ammonium sulfate, ammonium carbonate too much, or uneven application caused by burning roots, seedling time is too long, soil water shortage, etc. are easy to cause dry heartburn.
Control methods (1) Organic fertilizer should be fully fermented and evenly applied. Fertilizer. Staged and topdressed; (2) Sorghum live, small water poured, the surface is kept wet and wet; (3) The heart is found to be watered immediately And spraying 0.7% calcium oxide and 2000 times naphthalene acetic acid mixture; or 1% superphosphate solution, or 0.7 manganese sulfate solution, every 5-7 days, a total of 3 times. (4) It is strictly forbidden to water industrial sewage.
Causes of the disease Due to root dysfunction or other causes, calcium cannot be delivered to the growing tip, causing physiological disorders. A serious deficiency of active manganese in the soil can also be caused.
Symptom recognition occurs mostly in the rosette period, the edge of the heart leaves is dry, curled inward, and growth is inhibited. At the beginning of the ball, the edge of the leaf is water-immersed, and then becomes yellow translucent to yellow-brown scorch, and there is no abnormal appearance after the ball is formed. The upper part of the 3-4 layers of the inner middle of the section is dark brown water stained paper. The disease leaves are rotted, have rancid taste, short stems and vascular bundles are normal, and can be distinguished from soft rot and other diseases.
Disease conditions Salt-alkali soil, pouring industrial sewage, applying ammonium sulfate, ammonium carbonate too much, or uneven application caused by burning roots, seedling time is too long, soil water shortage, etc. are easy to cause dry heartburn.
Control methods (1) Organic fertilizer should be fully fermented and evenly applied. Fertilizer. Staged and topdressed; (2) Sorghum live, small water poured, the surface is kept wet and wet; (3) The heart is found to be watered immediately And spraying 0.7% calcium oxide and 2000 times naphthalene acetic acid mixture; or 1% superphosphate solution, or 0.7 manganese sulfate solution, every 5-7 days, a total of 3 times. (4) It is strictly forbidden to water industrial sewage.
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