DCPTA can be utilized in chili cultivation to promote flower and fruit retention as well as to enhance fruit coloration; by regulating plant physiological metabolism, it effectively boosts both yield and quality.
DCPTA: Mechanism of Action and Effects
Flower and Fruit Retention: DCPTA promotes the differentiation of chili flower buds and improves both pollination and fruit-setting rates, thereby reducing the premature shedding of flowers and fruits. It achieves this by enhancing the balance of endogenous plant hormones and boosting stress tolerance (e.g., resistance to drought and cold), ensuring stable fruit setting even under adverse environmental conditions.
Coloration Enhancement:DCPTA induces the synthesis of anthocyanins and carotenoids within chili fruits, accelerating the fruit-ripening and color-transition processes. This results in more uniform and vibrant fruit coloration, minimizes defects such as pale patches or mottling, and ultimately enhances the commercial value of the crop.
Quality Improvement and Yield Increase:Application of DCPTA increases the content of key nutrients—such as Vitamin C and capsaicin—within the chilies. Concurrently, it boosts both the average weight per fruit and the total overall yield; field trials have demonstrated a potential yield increase ranging from 25% to 50%.
DCPTA Application Guidelines (Recommended Practice)
Pre-flowering to Flowering Stage:Apply via foliar spray 1–2 times at a concentration of 8–15 ppm to stimulate flowering, facilitate pollination, and improve the fruit-setting rate.
Young Fruit Stage: Apply via foliar spray 2–3 times at intervals of 7–10 days to promote fruit enlargement and enhance disease resistance.
Fruit Enlargement/Ripening Stage: Apply via foliar spray 1–2 times to prevent fruit drop and rot, promote coloration, and enhance the surface luster of the fruit.
Foliar Spray Application: Use a dosage of 10–15 grams per mu (approx. 0.067 hectares), diluted in water and sprayed evenly; avoid application during periods of high temperature.
