Complete Technical Guide for Triacontanol (Plant Growth Regulator) Application

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[1] Functional Characteristics

Triacontanol can be absorbed by plant stems and leaves, promoting growth and increasing dry matter accumulation. It:
• Enhances cell membrane permeability, facilitating mineral absorption and increasing protein/dry matter content.
• Boosts chlorophyll content and photosynthetic intensity.
• Elevates activity of amylase, polyphenol oxidase, and peroxidase, accelerating seed germination and root development.
• Stimulates sprouting, rooting, stem/leaf growth, and flowering, enabling early maturation and higher fruit-setting rates.
• Improves cold/drought resistance, increases yield, and enhances crop quality.

[2] Application Techniques

A. Seed Germination Enhancement
• Rice: 1 mg/L soaking (48h for early-season; 24h for mid/late-season). → Germination rate ↑2%, germination energy ↑8%.
• Wheat: 0.2-0.5 mg/L soak 4-12h. → Uniform early emergence, yield ↑4.3-7.1%.
• Cabbage: 0.05 mg/L soak 5h → Significantly ↑germination rate.
• Soybean: 0.05 mg/L soak 6h → ↑Germination rate/energy, ↑multi-seed pods.
• Sugarcane: 0.5-2.0 mg/L soak single-bud stems 30h → Promotes sprouting.
• Cucumber: 1 mg/L soak 24h → ↑Germination & disease resistance.
• Watermelon: 0.5 mg/L soak 6h → ↑Germination rate.

B. Growth Regulation & Yield Improvement
■ Field Crops:
• Rice: Spray 1-2 mg/L at panicle initiation & booting stages → Yield ↑15.4%.
• Corn: Spray 0.1-0.3 mg/L at tasseling & filling stages → ↓Tip barrenness, ↑kernel plumpness.
• Soybean: Spray 0.1-0.5 mg/L twice during flowering → Nitrogen fixation ↑, yield ↑21.1%.
• Peanut: Spray 0.5-1 mg/L at seedling/flowering → Early maturity 5-7d, yield ↑5-10%.
• Rapeseed: Spray 0.5 mg/L at full bloom → ↑Seed-setting rate & 1000-grain weight.

■ Vegetables:
• Tomato: Spray 0.1-1.0 mg/L 2-3 times after transplanting (7-10d intervals) → Significant yield ↑.
• Pepper: Spray 0.5 mg/L every 14d from initial bloom (3x) → Yield ↑20.55%, early yield ↑.
• Chinese Cabbage: Spray 0.5 mg/L at rosette & heading stages → Early maturity 2-5d, yield ↑10.8-16.3%.
• Celery: Spray 0.5 mg/L every 10d (3-4x, stop 15d pre-harvest) → VC ↑6.93%, sugar ↑3.7%.
• Radish: Spray 0.5 mg/L (50kg/mu) at root expansion (2-3x, 8-10d intervals) → VC ↑21.5%, sugar ↑28.4%.

■ Fruits:
• Apple: Spray 1.0 mg/L pre-harvest → Color index ↑17.76%, premium fruit ↑21.31%.
• Citrus: Spray 0.5-0.6 mg/L at flowering → ↑Brix, yield, and quality.
• Jujube: Spray 1 mg/L twice at full bloom → Fruit-setting rate ↑27-35%.
• Strawberry: Spray 0.1 mg/L at regreening & flowering → Chlorophyll ↑, yield ↑.

■ Specialty Crops:
• Tea: Spray 0.5-1.0 mg/L twice (at bud+1 leaf stage, 15d interval) → Amino acids ↑0.42%, yield ↑.
• Walnut: Spray 0.5 mg/L at female bloom & fruit expansion → Fruit-setting rate ↑8.8%.
• Seaweed (Laminaria/Porphyra): Soak seedlings 6h in 0.5-1.0 mg/L → Yield ↑15-20%.
• Mushrooms (Enoki/Oyster): Spray 0.5 mg/L at primordia stages → Harvest 3-4d earlier, yield ↑15-26.7%.

[3] Precautions

① Apply on sunny afternoons (20-25°C optimal). Avoid extreme temps/rain/wind.
② Strictly control concentration: High levels may inhibit germination.
③ Re-spray if rainfall occurs within 6 hours after application.