Greenhouse tomato planting, tomato cracking preventive measures

22-10-2024

Greenhouse tomato plantingGreenhouse tomato planting, tomato cracking preventive measures

Tomato cracked fruit is a common physiological disease, which will seriously affect the yield and quality of tomato, and then reduce the economic income of vegetable farmers. It is very important to understand the symptoms and control measures of cracked fruit when tomatoes start to color.

✅ Symptoms of tomato cracked fruit There are three common symptoms of tomato cracked fruit: ♦ Radial cracked fruit: This type of cracked fruit has the stalk as a round point, extending toward the shoulder, showing radial cracking. Subtle cracks usually occur at the beginning of the green ripening stage of the fruit, and as the fruit turns color, the cracks will become more obvious and may even appear deep cracks. ♦ Ring split fruit: This kind of split fruit is centered on the fruit stalk and has a ring lobed shape, which usually occurs when the fruit is ripe. ♦ Striated cracked fruit: Vertical, horizontal cracking or irregular shape of cracks on the bottom, top and sides of the fruit, this cracking phenomenon is also more common in greenhouses.

✅ Ways to prevent cracked tomatoes In order to reduce the incidence of cracked tomatoes, the following preventive measures can be taken: ✅1. Selection of crack resistant varieties: When planting, you can choose the crack resistant varieties with thick skins, small and medium-sized fruits and resistance to storage and transportation. In contrast, varieties with thin skins and larger fruits are more prone to cracking, so special attention should be paid to the selection of varieties.

✅2. Reasonable ventilation, control temperature and humidity: tomato growth needs a certain temperature difference between day and night, proper ventilation can control the temperature and humidity in the shed. Under normal circumstances, when the temperature in the shed reaches 27~28 ° C in the morning, ventilation is required after dew subsides on the fruit surface, which can reduce the occurrence of cracked fruit. In addition, when the temperature drops to about 23 ° C in the afternoon, the tuyere should be closed in time to prevent the night temperature from being too low. At the same time, when encountering windy weather, it is necessary to avoid blowing the tomato fruit directly to reduce the risk of cracking fruit.

✅3. Strengthen fertilizer and water management: Keep the soil moist after tomatoes enter the rising stage to avoid flood irrigation. It is advisable to adopt the method of "small water frequent watering" to provide water and nutrients in a small amount and many times to prevent the soil from being too dry or too wet leading to cracked fruit. At the same time, calcium deficiency is also a factor causing tomato fruit cracking, so it is necessary to apply sufficient calcium fertilizer in advance, such as superphosphate or calcium magnesium phosphate fertilizer. During fruit growth, it is recommended to spray foliar fertilizer containing trace elements such as calcium and boron regularly to increase the toughness of fruit cell wall and reduce the incidence of fruit cracking.

✅4. Leave the leaves properly and do well in the whole branch and core picking: During the whole branch and core picking of tomatoes, 2 to 3 leaves should be kept on the top of the ear and rely on their own leaves to shade the light to avoid direct sunlight caused by the peel. At the same time, when shooting the top bud, make sure to leave 2 leaves on the top of the last ear to promote the growth of the plant and ensure the transpiration of excess water in the plant.

✅5. Suitable period of fruit picking: there is a period of expansion in the post-ripening stage of the fruit, if not picked in time, it is easy to appear small cracks; If the fruit is picked too late, long cracks may result. Therefore, when the fruit reaches commercial, it should be picked in time to avoid the occurrence of cracked fruit.


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