Tomato rot, also known as strip rot, is a physiological disease. Generally, the incidence rate is high in winter, about 5% -10%, and it can reach more than 30% in severe cases, causing the fruit to lose its commodity value. The tendon rot mainly occurs before the tomato fruit is colored, and generally can be divided into two types. One is a browning type, with local browning on the surface of the diseased fruit, irregularities, stiff spots, and even necrotic spots. The vascular bundles and flesh can be seen brown and necrotic by cutting the diseased fruit. There was no obvious change in the shape of the diseased fruit, but the diseased part was poorly colored and white. When harvesting, the fruit surface had obvious green or pale green spots and the pulp hardened. The second is a white variant with a white skin and middle ribs, orange skin, hardened pulp. The tendon rot is caused by a variety of adverse environmental conditions, mainly due to low temperature, lack of light, and severe shortage of potassium, which results in the reduction of photosynthesis products of the plants, impeded the operation, and the disorder of metabolism in the fruits, resulting in the occurrence of tendon rot. In particular, more tomatoes in winter cultivation occur on the second and third spikes. Prevention measures: First, improve lighting conditions in the shed, and clean the shed film in time; Second, intensive planting, timely pruning and hanging vines, and clearing off the leaves covering the fruit; third, do a good job of fertilizer and water management, apply adequately decomposed organic fertilizer, and appropriate Use nitrogen fertilizer, avoid flooding irrigation when flooding, promote groundwater pouring or drip irrigation. Emergency measures: Apply 2% dextrose solution at appropriate time during periods of low temperature, short sunshine from December to February, or spraying of 2% glucose and 2% dihydrogen phosphate on occurrence of diseased fruit Potassium mixtures generally have better control effects. Anesthesia Medical Co., Ltd. , https://www.trustfulmedical.com
How to prevent tomato rot