How to cure tomato rot
One vegetable farmer reported that the cherry tomatoes in the shed had serious fruit drop, the sheds and the sheds were heavier, and the sheds were lighter in the middle. A careful observation of the fruits that fell to the ground revealed that they all had one thing in common, namely that dark brown spots of necrosis appeared at the place where the fruit stems were connected to the sepals. According to the vegetable farmer, the fungicides used to fight M. sinensis have been used twice in succession. "Prevention of Mianbing disease is not symptomatic, and two times of drug control of Botrytis cinerea is still not effective. If the fruit still falls, how can I stop it? It really makes people feel bad!" complained farmers. A few cherry tomato fruits falling on the ground can be observed: the pith of the fruit stem has turned brown and develops into the interior of the fruit, and a cavity appears inside the severe fruit. "This is the pedicel disease of cherry tomatoes. No wonder the drugs that fight the disease and the gray mold aren't working. It turned out to be not correct!" I said. It is understood that the pedicel disease of cherry tomatoes is a physiological disease that is not common in greenhouse cultivation. The physiological disease occurred mainly in the flowering period and the fruiting period. Only the fruit bracts were affected. In the early stage, dark brown necrotic spots of different sizes appeared, but they did not decay and then continued to develop inwards, resulting in necrosis of the pith pulp. As a result, the cavity is finally formed, causing the fruit to fall off. After careful enquiry, the vegetable farmer learned that the film on the front of the shed had not been tightly pressed with earth pressure, the film on the air outlet hadn't been replaced, and no straw curtain had been placed. Although these days were warm, the temperature at night had fallen below 10°C. . The greenhouse temperature is high during the day, low at night, and the temperature difference is very large. After spraying with anti-dropping agents, the cells in the medulla of the fruit are stimulated to grow at an excessively high speed. The photosynthetic products produced by the plants themselves and the water and nutrients absorbed by the roots cannot meet the rapid expansion of the fruits. The needs of the normal growth balance is broken, resulting in physiological disorders of the pith cells, resulting in necrotic cells in the marrow, resulting in cavities. It is recommended to strengthen management. The film on the front face is pressed tightly with soil, the straw curtain is pulled in time to increase the temperature inside the greenhouse, and the absorption capacity of the root system for the phosphorus and potassium fertilizer is enhanced. When the water is poured, the fertigation fertilizer No.1 is flushed with fertigation, and the foliar spray is applied to the harvest No.1. 800 times liquid, potassium dihydrogen phosphate 800 times, foliar fertilizer containing calcium. Medical Disposable Swabs,Sterile Transport Swabs,Medical Sterile Swabs,Disposable Sterile Swabs Yancheng Rongtai Labware Co.,Ltd , https://www.rongtailab.com