CROWN MN

Physiological Control Technology

"Crown MH" from the Belgian manufacturer Kreglinger Europe NV is a specialized tool designed to manage plant metabolism during the final stages of the growth cycle. The active ingredient, maleic hydrazide, functions as a potent inhibitor of cell division. Unlike standard fungicides, this growth regulator is engineered to target and halt sprouting processes and excessive tissue development, which are primary causes of post-harvest quality loss.

Mechanism and Application Tactics

Application via foliar spraying (strictly before the onset of natural senescence) allows the active ingredient to move systemically into storage organs—onions or potatoes. Maleic hydrazide effectively blocks meristematic activity, essentially "preserving" the harvest from within. This is critical for shelf-life extension, as it significantly reduces tissue respiration and prevents premature sprouting.

• Performance: A single application ensures stable protection against storage losses during long-term warehouse shelf-life.
• Regulations: The application rate ranges from 8.9 to 11 L/ha. It is essential to strictly adhere to the timing of application: only one treatment per season is permitted.
• Formulation: The soluble concentrate ensures rapid penetration and uniform distribution across the leaf surface, which is vital for efficient systemic transport into the tubers or bulbs.

Given the product's hazard class 2 rating, strict compliance with safety protocols during handling and application is mandatory. Incorporating "Crown MH" into your pre-harvest strategy is an effective investment in quality, reducing post-storage culling by up to 5–8 months.