What causes rotten tomato fruit

What causes rotten tomato fruit? Please guide the rotten fruit of autumn tomato in fruiting period. the cause of the rotten fruit is related to three kinds of diseases, and the control should be strengthened. 1. Soft rot of rotten fruit tomato caused by soft rot is a bacterial disease, which mainly infects stems and fruits. When the fruit occurs, the pericarp is intact and bright, the pulp is rotten and soft, it smells when it is broken, and it turns into a white fruit after drying. Prevention and control methods: 1. Avoid pruning and branching in cloudy and rainy days or when the dew is not dry, promote wound healing as soon as possible and prevent bacteria from invading. Timely control of fruit pests such as Helicoverpa armigera; 3. Before or at the initial stage of the disease, 72% agricultural streptomycin 4000 times, or 70% diexamethasone 1000 times, were sprayed once every 8 to 10 days, depending on the condition. Second, the rotten fruit caused by brown rot is a fungal disease, which mainly harms nearly mature fruits. Light brown spots are often produced at the shoulder of the fruit near the top of the fruit, and concentric wheel spots are formed in the later stage, the color becomes dark brown, and the surface is smooth without softening. When the humidity is high, the disease will produce a gray-white mildew layer. Prevention and control methods: 1. Timely removal of diseased leaves and fruits, removal of diseased plant remains on the ground; 2. Tomatoes cultivated in plastic greenhouse or greenhouse should strengthen the management of temperature and humidity and release air and moisture at the right time. At the beginning of the attack, spray with 25% Typhi 800-1000 times, once every 7-8 days, for 2-3 times. Third, the rotten fruit caused by anthrax is caused by half-known bacteria. The pathogen was infected before the fruit coloring, latent to the disease after coloring, the primary transparent spots gradually expanded and became black, slightly sunken, and the disease spots had concentric wheel lines, on which small black grains were planted and secreted red sticky substances under wet conditions. finally, the fruit rotted and fell off. Prevention and control methods: 1. In seriously diseased fields, rotation with non-tomato vegetables should be carried out for more than two years. Remove the source of the disease, remove the diseased fruit in time, prevent re-infection, thoroughly remove the ground remnants and remaining branches and leaves after fruit harvest, and concentrate on burning. In the green fruit period, 80% anthrax Fumei wettable powder 800 times, or 50% carbendazim wettable powder 500 times, spray once every 8 to 10 days, twice in succession, can inhibit the development of the disease. Click to get more tomato planting techniques click to get more vegetable planting techniques