How to prevent tomato rot disease in time:
A tomato ribs rot symptoms
There are two common types of tendon rot: one is browning. In the fruit enlargement period, local browning occurred, the fruit surface was uneven, and the fruit was brown or necrotic. The vascular bundle in the peel showed brownish stripe necrosis, the heart hardened or the flesh browned. Lose the value of the goods. The second is a white variant. It mainly occurs in the red ripening period of green ripe fruit. The disease is uneven coloring of the fruit, and the waxy luster of the diseased part. The fruit of the diseased fruit is “heart-shapedâ€, and the vascular bundle of the pulp is dark brown and the disease is light. The brown part is not red, the flesh is hardened, the quality is poor, and it is light and tasteless. The heavy vascular vascular bundles are all dark brown and the fruit forms a cavity. The disease is generally not easy to see symptoms from the performance of stems and leaves.
Second, the causes muscle tomato rot
Tomato rot and fruit, generally occurs during fruit enlargement and maturity, mainly due to poor environmental conditions and improper cultivation measures, especially excessive nitrogen fertilizer, insufficient potassium and organic fertilizer, insufficient light, high temperature and humidity, causing carbon to nitrogen ratio in plants. Disorder. In particular, even after a cloudy day, this disease is very likely to occur. In addition, plants suffering from viral diseases are also likely to aggravate the occurrence of tendon and fruit, or form some stiff spots on the surface of the fruit, seriously affecting the quality of the fruit. In particular, heavy sputum, partial application of nitrogen fertilizer, flood irrigation and soil compaction are serious. Whether it is spring cultivation or autumn cultivation, tomato tendon can occur.
Third, the preventive measures tomato ribs rot
There are many reasons for causing tomato tendon and fruit. The prevention and control of tendon must be started from these induced causes and preventive measures should be taken.
1. Choose the right variety and strictly control the virus disease. Different tomato varieties have different occurrences of gluten and fruit, and tomato varieties with antiviral diseases should be selected as much as possible. In the cultivation management, we should prevent viral diseases in a timely and effective manner. Pay attention to reasonable rotation to alleviate the imbalance of soil nutrients.
2. Strengthen fertilizer and water management. Adding fully decomposed organic fertilizer, especially bio-organic fertilizer, to achieve balanced fertilization, and it is strictly forbidden to apply ammonium fertilizer. After the fruit is set, the multi-component micro-fertilizer (boron, calcium, iron) is applied once every 15 days for 2-3 times. Keep the soil moisture suitable and drain it in time after rain.
3. Use 40% plant virus spirit soluble powder 1000 times solution, in the slow seedling stage of the planting, especially after the start of the results, can significantly reduce the occurrence of tendon and fruit, generally should be used once every 7-10 days, continuous 3-4 Times. Spray potassium dihydrogen phosphate when the temperature is low and the light is weak. Advocate the application of multiple compound liquid fertilizer, as well as other foliar fertilizers such as love more than once, every 7 days, 3-4 times in a row.
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