Forchlorfenuron is a synthetic plant growth regulator that primarily improves crop yield and quality by promoting cell division and fruit enlargement. Its core effects are as follows:
1. Forchlorfenuron promotes cell division and fruit enlargement. As a cytokinin analog, forchlorfenuron has 10-100 times the activity of natural zeatin, significantly prolonging the cell division phase and increasing the number of fruit cells. For example, using a 0.1% forchlorfenuron solution during the young fruit stage of grapes can increase the weight of individual fruits by 30%-50%.
2. Forchlorfenuron improves fruit set and yield. In crops such as watermelon, cucumber, and melon, forchlorfenuron can prevent fruit drop and improve fruit set. For example, applying 0.1% forchlorfenuron to the fruit stalk on the day of watermelon flowering can improve yield and quality.
3. Forchlorfenuron improves fruit quality. Forchlorfenuron promotes photosynthesis, increases sugar content, and improves fruit appearance. In crops such as kiwifruit and grapes, forchlorfenuron results in fuller fruit and earlier market availability. 4. Forchlorfenuron delays leaf senescence.
By delaying leaf senescence and maintaining green color, it enhances plant resistance and indirectly promotes fruit growth.
Forchlorfenuron safety. International authorities recognize its harmlessness to humans, but excessive use should be avoided to reduce environmental risks.
