- Gibberellic Acid GA3 90% TC
- Gibberellic Acid GA3 40% Soluble Granule
- Gibberellic Acid 4+7 /GA4+7 90%TC
- Gibberellic Acid 10% Tablet
Gibberellic Acid (GA3) is widely used to delay senescence (aging) and extend the freshness of fruits, flowers, and vegetables by regulating physiological processes. Below are its applications across various crops:
1. Fruits
- Grapes:
- Postharvest Treatment: Dip or spray clusters with 10–20 mg/L GA3 to delay berry softening, reduce decay, and maintain firmness.
- Effect: Inhibits ethylene synthesis and preserves color.
- Citrus (Oranges, Mandarins):
- Preharvest Spray: Apply 20–30 mg/L GA3 1–2 weeks before harvest to reduce peel aging and extend storage life.
- Postharvest Dip: Use 10–15 mg/L GA3 to delay chlorophyll degradation (peel greening).
- Mango:
- Preharvest Spray: 20–40 mg/L GA3 10 days before harvest to reduce respiration rate and delay ripening.
- Banana:
- Postharvest Dip: 50–100 mg/L GA3 to delay peel browning and starch-to-sugar conversion.
2. Vegetables
- Leafy Greens (Spinach, Lettuce):
- Postharvest Spray: 5–10 mg/L GA3 to delay chlorophyll breakdown and reduce leaf yellowing.
- Tomato:
- Preharvest Spray: 10–20 mg/L GA3 to slow down fruit softening and extend shelf life.
- Cucumber:
- Postharvest Treatment: 10–30 mg/L GA3 to maintain crispness and reduce water loss.
3. Flowers
- Cut Flowers (Roses, Carnations):
- Preservation Solution: Add 5–15 mg/L GA3 to vase water to delay petal wilting and extend vase life.
- Effect: Maintains cell membrane integrity and delays ethylene-induced senescence.
- Orchids:
- Preharvest Spray: 10–20 mg/L GA3 to slow flower abscission and prolong blooming period.
4. Root Crops
- Potato:
- Postharvest Treatment: 5–10 mg/L GA3 to inhibit sprouting and reduce weight loss during storage.
Mechanism of Action
- Delaying Senescence: GA3 suppresses ethylene biosynthesis and oxidative stress, slowing down cellular aging.
- Preserving Freshness: Maintains cell turgor, reduces respiration rate, and inhibits microbial growth.
Notes:
- Concentration: Adjust based on crop sensitivity and storage conditions.
- Combination: Synergistic effects when combined with calcium chloride (for firmness) or 1-MCP (ethylene inhibitor).
