Stoprost

Mechanism of Action and Field Application

«Stoprost» is a professional growth regulator based on chlormequat chloride, a well-established retardant. Its primary function is to inhibit the biosynthesis of gibberellins, the phytohormones responsible for internode elongation. In practice, this results in the shortening and thickening of the lower internodes of winter wheat, significantly increasing the crop's resistance to lodging.

The product is formulated as an aqueous solution, which allows for efficient tank mixing. Application rates range from 1.0 to 2.0 liters per hectare. The treatment protocol is strictly limited to one application per season, making precise timing essential. Field experience shows that the optimal efficacy is achieved when the product is applied at the beginning of the stem elongation stage (jointing stage).

Technical Advantages

• Structural Integrity: Shortening the internodes lowers the plant's center of gravity, drastically reducing mechanical failure during heavy wind or rain.
• Physiological Benefits: Thickening of the stem walls enhances nutrient transport efficiency and supports robust root development.
• Safety Profile: Classified as a Hazard Class 3 substance, ensuring suitability for industrial use under standard handling protocols.

The product is manufactured by Flegchem International Co., Ltd (Nanjing, China), with Khimagromarketing serving as the applicant. Implementing «Stoprost» is a critical technological step for intensive winter wheat production, where high nitrogen input often causes excessive vegetative growth that leads to crop lodging.