How to solve the problem of low fruit setting rate in tomatoes? Methods to improve the fruit setting rate
Tomato is a common [plant] in our lives, its taste is sweet and sour with distinctive character, and its vitamin content is also extremely high, and it can be paired with many dishes. Many people grow some at home, but during the growing process they always encounter poor fruit setting and low fruit setting rate in tomatoes. So how can the fruit setting rate of tomatoes be improved? Let's take a look together.
1. Lower the temperature
The ripening period of tomatoes coincides with the high-temperature season. If tomatoes are kept in an environment above 35 degrees for a long time, the plant's nutrient consumption will become excessive, causing flower bud differentiation to be blocked, resulting in poor flowering and fruit setting and flower and fruit drop. Therefore, during high-temperature periods, ways must be found to lower the growing environment temperature so that they grow and develop at a suitable temperature. From 11 a.m. to 3 p.m., shade nets can be covered to reduce light intensity and play a role in cooling. In addition, spraying in the greenhouse with a sprayer or sprinkler irrigation system can increase humidity, and the cooling effect is also good.
2. Prevent excessive vegetative growth
High temperatures will make the plant's nutrient consumption excessive, and will also cause the plant's vegetative growth to be vigorous, far exceeding reproductive growth, causing the plant's branches and leaves to grow excessively. This is extremely unfavorable for tomato fruit flowering and fruiting. Plant regulators can be sprayed to balance the tomato's vegetative growth and reproductive growth. Commonly used growth regulators include 500-fold chlormequat solution or 1500-fold daminozide solution. Spraying them inhibits the tomato's vegetative growth, enhances photosynthesis, and promotes the tomato's vegetative growth, thereby improving the fruit setting rate.
3. Proper fruit thinning
Many farmers in the early stage use the method of keeping 5-6 fruits per truss, which can play a role in suppressing the plant, inhibiting excessive plant growth, and promoting fruit setting. But in this way, the lower part of the tomato has too many nutrients, and the upper part of the plant has insufficient nutrients, which will affect fruit setting. Therefore, the excess fruits on the lower part of the plant should be thinned out in six rounds. The first time is when the fruits grow to the size of soybeans, remove the oversized, undersized, and deformed fruits. When the fruits grow to the size of grapes, mainly remove the deformed fruits to reduce nutrient consumption and promote flowering and fruiting on the upper part of the tomato.
4. The concentration of the fruit-setting hormone applied to flowers must be reasonable
If the concentration of the fruit-setting hormone applied to flowers is too high, it will cause hormone poisoning in the plant, resulting in deformed fruits. Therefore, the concentration for flower treatment should be appropriate. It is recommended to use 2 milliliters of 2% 2,4-D, dilute it with water into 1 liter of mixed solution, then add 4 milliliters of brassinolide and 2 grams of chelated boron. After testing, the effect is very good, and it can improve the fruit setting rate, with fewer deformed fruits.
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