Forchlorfenuron is a plant growth regulator mainly used in watermelon cultivation to promote fruit setting, fruit enlargement, and increased yield. However, attention must be paid to the application method to avoid side effects.
**Forchlorfenuron Mechanism of Action**
1. Forchlorfenuron promotes cell division: Accelerates cell division and differentiation in watermelon fruits, shortens the growth cycle, and increases yield.
2. Forchlorfenuron enhances photosynthesis: Delays leaf senescence, improves photosynthetic efficiency, and increases sugar accumulation.
3. Forchlorfenuron prevents flower and fruit drop: Regulates nutrient distribution, reducing fruit drop and fruit abortion.
**Forchlorfenuron Application Method**
Applicable Time: On the day of or the day before watermelon flowering, or during the active period of fruit cell division (usually after pollination).
**Forchlorfenuron Concentration and Dosage**
0.1% Forchlorfenuron soluble liquid: 10-20 ml diluted in 1 kg of water. Apply to the fruit stalk or spray. Forchlorfenuron spraying techniques: Lift the melon vine, hold the nozzle 10 cm away from the melon, and spray once on each side to ensure even mist coverage. Avoid high concentrations: Excessive concentration can easily lead to cracked, stunted, or thin-skinned melons.
