Magnum Calibre has been specially formulated to help prevent the development of hydrophobic soil conditions. It is a unique blend of environmentally friendly biodegradable turf wetting agent surfactants. On entering the root zone it attaches itself to soil particles and forms a film which not only helps water percolate evenly throughout the soil profile but will also help conserve water.
 
Magnum Calibre should be applied before onset of visible dry patch or localised dry spots. It is fully miscible in water but does not dissolve and ensures water penetration in areas difficult to wet. It should be used in a targeted wetting agent programme with Magnum CO. Magnum Calibre should be used between April and October. It should be applied at 10-20 lt/Ha, meaning a 10lt pack will cover 5,000-10,000m².