Ga₃ – A Core Active Ingredient In Modern Plant Growth Regulation Technology (Gibberellic Acid – Ga₃ ≥ 90%)

1. OVERVIEW OF GA₃

Gibberellic acid (GA₃) is a naturally occurring phytohormone from the gibberellin group. It plays a key role in coordinating physiological processes such as germination, shoot and leaf development, floral differentiation, fruit formation, cell elongation, and breaking dormancy.

First isolated in the mid-20th century, GA₃ quickly became one of the most widely used plant growth regulators (PGRs) globally. It is present in hundreds of commercial agricultural formulations and industrial crop production programs.

2. MODE OF ACTION

GA₃ directly affects apical and lateral meristems, supporting:

Promotion of cell elongation in stems, shoots, and buds.

Acceleration of germination in seeds, bulbs, and dormant buds.

Stimulation of floral differentiation and synchronized flowering.

Enhancement of fruit set and support for seedless fruit development.

Breaking physiological dormancy in many crops (onion, potato, melon, etc.).

GA₃ is particularly useful for off-season cultivation, synchronized crop development, and enhancing marketable yield.

It can be used alone or in combination with other actives in advanced PGR formulations.

3. TECHNICAL NOTES WHEN USING GA₃

GA₃ is highly sensitive to light, heat, and pH – it should be stored properly and used immediately after dilution. Do not leave it exposed to direct sunlight.

Apply at the correct dose and growth stage to avoid excessive stem elongation, fruit drop, or poor fruit quality (e.g., reduced sweetness, softness, uneven ripening, or delayed harvest).

GA₃ does not replace fertilizers – it supports growth but plants still require balanced nutrition.

GA₃ can be combined with cytokinin, auxin, or brassinolide to enhance flowering and fruiting, especially in off-season treatments.