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A product name for a damp grade of Iron Sulphate which is used for greening up and ‘hardening’ a turfgrass surface. It has a typical application rate of 5-10kg, being dissolved in 200-600 litres of water per hectare. It can be applied at 3-6-week intervals, although not during extended dry / drought periods nor during frost. See also Ferrous Sulphate and Iron Sulphate entries. It is supplied by GBR Technology.