Latest Key Points for Autumn Tomato Management
Tomatoes are one of the most popular fruits and vegetables, rich in nutrients, with a sweet and sour taste, and in high demand in the market. They are generally planted in spring, but some growers also plant them in autumn to increase profits. So how should autumn tomatoes be managed? Let's take a look together.
1. Temperature and humidity control
During the flowering period of tomatoes, the suitable daytime temperature is 25-30 degrees, and at night 20-15 degrees. Below 15 degrees or above 30 degrees will cause flower and fruit drop as well as physiologically deformed fruits. So if the temperature is too high, provide light shade during the day or increase ventilation; if the temperature is too low, add a film cover at night. The suitable temperature difference is 12-20 degrees. In addition, the humidity in the greenhouse should also be controlled. After the tomato seedling hardening period, the water demand increases greatly. At this time, water should be supplemented in time to avoid alternating dry and wet conditions, and a uniform water supply should be ensured.
2. Fertilizer and water management
Fertilizer and water management is the most important part of the tomato growth process. Generally, 7-10 days after transplanting, apply a root-setting and seedling-reviving fertilizer together with watering. When the plant grows to more than 20 cm, combined with watering and fertilization as well as the fertilizer requirements of tomatoes, 2-4 kg of Dayi balanced water-soluble fertilizer per mu can be applied by broadcasting or drenching. During fertilization, attention should be paid to the application of calcium nitrate and potassium sulfate, and nitrogen fertilizer should be applied as little as possible to avoid stem rot caused by excessive nitrogen. Calcium deficiency can also cause blossom-end rot and bacterial diseases. During the fruit expansion period, in order to prevent hollow fruits, pay attention to supplementing boron fertilizer. In order to prevent stem and vine aging, zinc can be supplemented through foliar fertilizer.
3. Pest and disease control
The main diseases to control in autumn tomatoes are fusarium wilt and viral disease. Among them, for viral disease, after tomato transplanting, once growth begins and flower buds are visible, spraying should begin, generally once every half month, which can provide an excellent preventive effect. Once viral disease is found in the field, it can be controlled with the formula of 25 ml of Kangbingwei or Bingdu K + 15 tablets of medical Bingduling + 30 g of Bingdu A or Kangdufeng + 2 g of natural brassinolide + 15 kg of water. The first dosage should be larger, and the second application can be at a normal spray amount.
The above is an introduction to the key points of autumn tomato management. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.