To optimize tomato growth and fruit yield, several pruning and management techniques should be applied. First, to increase the leaf area and enhance photosynthesis, it's important not to remove the first inflorescence below the lateral vine (also known as the fork head) too early. Instead, wait until the first flower bud appears before cutting it off. This practice helps promote vigorous early growth and encourages earlier fruiting.
Second, when removing the first inflorescence or side vines, always keep the lower leaves intact. Only remove the fork heads, and ensure that at least two additional leaves remain. This maintains a strong photosynthetic capacity, which supports better fruit development and weight gain.
Third, when training the tomato vines, use a bending technique. For example, tie the first inflorescence to the base to redirect nutrients toward the second inflorescence, then bind it in the opposite direction. Alternatively, you can tie the rope in front of the inflorescence and twist it tightly, ensuring continuous support. This method helps concentrate nutrients in the fruits and is released when the plant reaches about 0.2 meters in height.
Fourth, it's recommended to retain 3 to 4 fruits per inflorescence for optimal yield and quality. The retention strategy varies depending on the number of flowers: if there are three flowers, keep three; if there are four or five, keep three to four. Removing weak flowers before they open helps prevent misshapen fruits and ensures larger, more uniform tomatoes. As many growers say, "There’s no such thing as too high a yield."
Fifth, different tomato varieties have different growth habits—self-pruning and indeterminate types. For indeterminate varieties, it's important to decide how many fruits to leave based on factors like fertility, growth potential, and local climate. In general, north of the Great Wall, 3 to 4 fruits per cluster are ideal, while south of the Great Wall, 4 to 5 fruits may be acceptable. However, over-fruiting should be avoided, especially in areas with multiple cropping cycles, to maintain both yield and economic returns.
Finally, combining these pruning techniques with the use of plant growth regulators can further boost tomato production. During the seedling stage, dip the roots in ABT solution at 10–15 ppm to improve root development. During the growing season, spray 500 ppm “Anon†and Dydropenamine to regulate growth. Apply these sprays 2–3 times, with an interval of 7–10 days between each application. These practices typically increase yield by 15–20%, resulting in greener foliage, healthier fruits, and stronger disease resistance.
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