Latest Causes and Solutions for Uneven Color Change in Tomatoes
Tomato, also known as the tomato plant, is a common vegetable in our daily lives. When unripe, its skin is green, and it gradually turns red as it grows. However, some tomatoes end up with a color that is half green and half red after ripening. What causes this uneven color? Below, Qinnong Web brings you the causes and solutions for uneven color change in tomatoes.
1. Variety
There are many tomato varieties, and each variety differs in its adaptability to the environment and its quality, so they present different external appearances under different environments. Therefore, when choosing a variety to plant, you should take the planting environment into account and select a superior variety suited to the local area.
2. Temperature
The color change in tomatoes is due to lycopene, but temperatures that are too high or too low will inhibit the production of lycopene, thus causing uneven color change in tomatoes and forming irregular yellow-green spots on the fruit surface. This situation mainly occurs in early summer, when the temperature difference between day and night is large and the tomato plants cannot adapt to the sudden temperature changes, resulting in uneven color. Therefore, pay attention to temperature changes when planting. If growing in a greenhouse, the daytime temperature must not be higher than 30 degrees, and at night the temperature should be controlled at around 15 degrees.
3. Improper Fertilization
When nitrogen fertilizer is applied excessively, the tomato plants grow vigorously with dense leaves, which causes the leaves to compete for nutrients, leading to a rapid increase in chlorophyll and thus inhibiting the formation of lycopene. Secondly, during the color-change period, the demand for phosphorus and potassium fertilizers increases. A lack of phosphorus and potassium fertilizers will cause the fruit to lack nutrients and become necrotic, and a lack of nutrients in the plant during the color-change process means less lycopene is produced, so a situation of green meeting red appears. For fertilization, we recommend mainly using organic fertilizer with a balanced combination of various elements.
4. Light and Water
Light and water affect the plant's photosynthesis and transpiration. If the light is too weak, less lycopene is produced and the color change is poor; if the light is too strong, direct sunlight will scorch the fruit and cause the fruit to discolor. If watering is too little, the plant lacks water and grows poorly; if watering is too much, it causes waterlogging and root rot.
The above are the causes and solutions for uneven color change in tomatoes brought to you by Qinnong Web. These are the main situations of poor color change in tomatoes, and we hope they can help you.