Prohydrojasmon (PDJ)–Promote Fruit Color Changing

Prohydrojasmon (PDJ) is a highly bioactive derivative of jasmonic acid, an endogenous plant growth regulator.

• It induces the orderly synthesis of ethylene, promoting anthocyanin production and accelerating fruit coloration.
• Once absorbed by the plant, it metabolizes into jasmonic acid, aiding in growth promotion, stress resistance, and ripening.

Physical and Chemical Properties

• Appearance: Colorless to pale yellow oily liquid
• Solubility: Insoluble in water, soluble in organic solvents
• Stability: Stable at room temperature

Formulations of Prohydrojasmon

• 98% TC
• 10% SP
• 10% SL

Functions and Effects

• Enhances Fruit Coloring: Speeds up fruit coloration, promotes uniform coloring, improves quality, and shortens the ripening period.
• Improves Stress Resistance: Activates the plant’s defense system, enhancing resistance to diseases and abiotic stress such as drought, salinity, and low temperatures.
• Boosts Root Vitality: Strengthens root nutrient absorption capacity and increases chlorophyll content and nitrate reductase activity (NRA) in leaves.
• Promotes Nutrient Accumulation: Increases soluble sugar and protein content in fruits, contributing to dry matter accumulation.
• Prevents and Resists Diseases: Provides effective resistance against fungal, bacterial, and viral diseases.

Key Features of Prohydrojasmon

1. Fast and Uniform Coloring: Promotes complete, natural fruit coloration without patchy coloring or regreening.
2. Improved Quality: Increases the sugar-acid ratio, enhances fruit appearance, and boosts internal quality.
3. Broad Application: Suitable for use during the crop’s growth stage for rooting and stress resistance, and during the fruit coloration stage for ripening.
4. Disease Prevention: Protects fruits from fungal, bacterial, and viral diseases.
5. Safe and Reliable: Does not harm young fruits, leaves, or affect fruit enlargement.
6. Applicable to All Crops: Suitable for multi-harvest crops, without negatively impacting subsequent fruit growth.

Usage Instructions

1. For Fruit Coloring
   • Foliar Application: Dilute at a ratio of 1:200–1:1500 and spray evenly on the entire plant.
   • Drip Irrigation: Apply 80–300 grams per acre.
   • Timing: Use during the initial coloring stage (when coloration reaches 10%) and repeat after 7–14 days.

2. For Stress Resistance
   • Foliar Application: Dilute at a ratio of 1:1500–1:5000 and spray evenly on the entire plant.
   • Drip Irrigation: Apply 30–100 grams per acre.

Application Guidelines

• Early Coloring Stage: When fruit coloration exceeds 10%–20%, apply the maximum concentration for foliar spraying or the highest dosage for drip irrigation. Repeat the application after one week to ensure complete coloration 7–10 days earlier.
• Late Coloring Stage: When fruit coloration exceeds 50%–60%, double the maximum concentration for foliar spraying or increase drip irrigation dosage to 1.5 times. This ensures complete coloration 7–10 days earlier.