Composition: 80% clinoptilolite , 20% dolomite chalk. Used in agriculture : crops, pastures, vegetables, fruit, viticulture Applying zeoplant in the soil significantly increases its capacity of retaining nutritious substances and water, therefore resulting a more efficient use of fertilizers and water. The ionic exchange is : Ca2+ 71 115% Mg2+ 2, 5 6 % K+ 13 19% Na+ 40-60 mg/100g. The chemical composition in dolomite chalk is : Cao 50 55 % Mgo 5- 10% Sio2 0, 2 % P2o5 0, 5 % Fe2o3/ti o2 / Mno/ na2o/k2o 0 , 01 0, 02 %