Stirokap VG

Engineering a Protective Barrier for Orchards

Effective management of apple diseases requires a strategy that blocks pathogens before they penetrate the plant tissue. Stirocap WG by ADAMA MAKHTESHIM LTD. utilizes advanced phthalimide chemistry to create a robust, preventative shield on leaves and fruit surfaces.

Technical Mechanism of Action

The core of Stirocap is Captan, a contact-action fungicide. Unlike systemic agents, it acts as a multi-site inhibitor. It disrupts the metabolic processes—specifically respiration and cell division—within a broad spectrum of fungal pathogens. Because Captan attacks the fungus at multiple metabolic points, the risk of developing resistance is virtually non-existent, making it a critical tool for long-term resistance management programs.

The Advantage of Water-Dispersible Granules (WG)

• Formulation Stability: The WG formulation ensures that the product forms a homogeneous suspension upon contact with water, preventing sedimentation in the spray tank and ensuring a consistent application rate.
• Superior Adhesion: The micro-particle size is engineered for high-affinity bonding to the apple cuticle. This structural property is essential for surviving rainy periods, where less advanced formulations would simply wash off.
• Operational Safety: The granular form prevents dust generation during mixing, enhancing safety for operators and aligning with the product's 3rd hazard class rating.

Application Strategy

Stirocap WG is most effective when applied as a preventative measure. With a recommended application rate of 1.8–2.5 kg/ha, the product provides comprehensive control against apple scab and fruit rot. Users should ensure full canopy coverage for maximum effect. With up to 4 treatments allowed per season and a 30-day pre-harvest interval, Stirocap WG serves as an ideal component for early to mid-season disease control, ensuring that the fruit remains clean and the tree's physiological health remains uncompromised.