Pirus 400

French Precision in Crop Protection: Pirus 400

In the demanding world of commercial orchards and vineyards, managing fungal pathogens like apple scab or grey mold requires more than just standard solutions. Pirus 400, developed by Arysta LifeScience S.A.S. (Noguères, France), stands as a cornerstone for growers seeking reliable, systemic protection. This fungicide is renowned for its specific chemical action, which targets the biochemical pathways of fungi rather than just their external structures.

The active ingredient, pyrimethanil, acts by disrupting the pathogen's secretion of enzymes. Since these enzymes are essential for the fungus to penetrate the host tissue, Pirus 400 essentially 'starves' the infection, stopping its development from within. This systemic approach is particularly valuable for protecting developing foliage, ensuring that new growth remains shielded even after the initial application.

Operational Performance and Strategic Application

• Reliability in Cool Weather: One of the standout features of the pyrimethanil chemistry is its performance in cool, damp conditions—common in early spring when scab infection risk is at its peak.
• Effective Disease Control: The product is highly specialized for treating apple scab (Venturia inaequalis) and grey mold (Botrytis cinerea), two of the most economically damaging diseases in the pome fruit and grape industries.
• Flexible Scheduling: With a recommended rate of 0.5–1 l/ha and a limit of 3 applications per season, Pirus 400 offers growers a flexible tool that fits seamlessly into existing integrated pest management (IPM) programs.

As a suspension concentrate, Pirus 400 provides excellent stability in tank mixes. With a safety classification of 3 and a pre-harvest interval of 20–30 days, it allows for professional-grade disease control without compromising the harvest timeline. Its origin from France, combined with the technical pedigree of Arysta LifeScience, makes it a staple for farmers focusing on high yield and export-quality fruit production.