During the process of fruit color change, chlorophyll gradually breaks down and disappears under the action of hydrolases; carotenoid levels increase slightly, while anthocyanins are produced in large quantities and accumulate continuously.

Regarding peach blossom and fruit thinning, spraying Ethephon at a concentration of 200 mg/kg eight days after flowering, or a Naphthylacetic Acid (NAA) solution at 40–60 mg/kg between 20 and 45 days after flowering, has proven effective. Trials on yellow peaches showed that spraying Ethephon at 300 mg/kg during full bloom yielded excellent thinning results.

Key Agricultural Uses of Ethephon
Promotes fruit ripening:It is the most widely used fruit-ripening agent. Applied to crops such as tomatoes, apples, mangoes, and bananas, it accelerates color change and ripening by 1–2 days, facilitating centralized harvesting and long-distance transport.

Both Indole Butyric Acid and Sodium 1-Naphthyl Acetic Acid promote rooting of cuttings. However, for some plants that are difficult to root, their effects are poor when used alone. Mixing Indole Butyric Acid and Sodium 1-Naphthyl Acetic Acid in a specific ratio can achieve satisfactory results.

DA-6 can increase the content of chlorophyll, protein, and nucleic acid in plants, as well as the photosynthetic rate. It also increases the activity of peroxidase and nitrate reductase, accelerates carbon and nitrogen metabolism, enhances the absorption of water and fertilizer and the accumulation of dry matter

Sodium 1-Naphthyl Acetic Acid(Na-Naa) is a broad-spectrum plant growth regulator that rapidly promotes cell division and expansion (fruit-enlarging agent, fruit-swelling agent), induces adventitious root formation (rooting agent), and regulates growth, promotes rooting, budding, flowering, prevents flower and fruit drop, forms seedless fruits, promotes early maturity, and increases yield.

Plant root systems are generally categorized into two major types: taproot systems and fibrous root systems. Spanning from the southern to the northern regions, major staple crops—such as wheat, rice, and maize—predominantly possess fibrous root systems.

Compound Sodium Nitrophenolates (Atonik) is a broad-spectrum, highly efficient plant growth regulator for agricultural use. It activates crop cell vitality and serves multiple functions, including promoting growth and root development, preserving flowers and fruits, enhancing stress resistance, and improving fertilizer efficiency.

how to use Pineapple King,pgr use for pineapple?
*a lower dosage will increase production effectively, and a higher dosage will inhibit the growth of leaf crowns effectively and delay fruit maturity.