Apply Active Cal at 8-12 oz /1000 ft2 (225 – 340 ml / 100m2) in a minimum of 1.5 gallons (5.7L) / 1000 ft2 (65 gallons/acre) monthly (or at lighter rates more often).
Although there is no burn potential to the plant, for best results Active Cal should be watered-in lightly after application.
Active Cal modifies the surface soil chemistry to allow for improved water penetration, better soil aeration and enhanced nutrient utilization. It is most effective when used on lighter soils and sand-based root zones. (Heavier soils may require higher rates).
Active Cal is compatible with most THP fertilizers.