Active ingredient

Gibberellic acid

Description

Gibberellic acid is a naturally occurring phytohormone classified as a diterpene acid. In agricultural practices, it is utilized as a growth regulator that optimizes the physiological responses of crops. Unlike herbicides or fungicides, this active substance serves as a biochemical messenger that triggers specific developmental pathways, enabling farmers to manipulate plant growth cycles for improved yield and quality.

The mechanism of action involves the activation of genes responsible for cell elongation and division. By interacting with the plant's hormonal system, gibberellic acid enhances the synthesis of essential enzymes that mobilize energy reserves within seeds and plant tissues. This stimulation process leads to accelerated germination, increased stalk length, and the development of larger, more uniform fruits across various horticultural species.

Gibberellic acid is widely applied in modern agriculture for various purposes:

  • Grapes: To increase berry size and lengthen fruit clusters.
  • Citrus: To manage fruit set and delay senescence of the rind.
  • Vegetables: To overcome cold-stress induced growth stagnation.
  • Seed Potatoes: To break dormancy and ensure faster, uniform emergence.

When applying gibberellic acid, precision is paramount. The physiological response to the hormone is highly concentration-dependent. Excessive application rates can lead to spindly growth, reduced structural integrity of the plant, and potentially lower yields. It is recommended to apply the product during periods of mild temperatures to maximize absorption and ensure that the plant tissues are responsive to the hormone treatment.

Safety protocols must be strictly followed when handling concentrated solutions. Operators should wear appropriate personal protective equipment, including gloves and eye protection, to prevent irritation. While gibberellic acid is considered to have low environmental toxicity, it must be stored in a cool, dry environment away from direct sunlight. Ensure that all mixing and spraying equipment is thoroughly cleaned after use to prevent contamination of other agrochemicals.

Regulatory

Status in the European Union

Approved in the EU

CAS number
77-06-5
Category (EU)
PG - Plant growth regulator
Approved from
01.01.2026
Approval until
31.12.2040
ADI
0.23 mg/kg bw/day
ARfD
0.78 mg/kg bw
AOEL
0.23 mg/kg bw/day

Regulatory status data: EU Pesticides Database © European Union, CC BY 4.0. EU status is for reference only and does not replace national registration in your country.

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