... P and K.Although most turf is built up on sand, which contains silicon dioxide, this Si cannot ... silicon Guaranteed Analysis: Sizing:SiO2≥20%Green grade: 0.5-1.5mmCaO≥20%Fairway grade: 1.5- ... solve these problems :1.) Thicken the cell wall ,make the turf stronger , improve the overridden ability, increase ... .4.Direction for use:Need watering for 5-10 minutes after applying, application rate is 15-25g per ...