Rock Phosphate
Rock Phosphate aims to be the premier supplier of direct application phosphate to the global agricultural sector.
We are passionate about the benefit of direct application fertilizer to sustainable farming and agricultural practices.
A slow release phosphate fertilizer suitable for maintenance applications.
Direct Application Phosphate Rock breaks down under acid soil conditions to release phosphate to the soil over time
Phosphate release is enhanced in the presence of soil moisture.
Can be safely mixed with elemental sulphur, dolomite or magnesium oxide
Chemical Analysis
Element |
RP 26% |
RP 27% |
RP 28% |
RP 30% |
P2O5 |
26.0 |
27.0 |
28.0 |
30.00 |
CaO |
44-45 |
45-46 |
47-48 |
48.00 |
MgO |
03.05 |
0.6-0.4 |
0.35-05 |
0.40 |
Fe2O3 |
1.90-2.00 |
1.8-2.00 |
2.00-2.50 |
2.20 |
Al2O3 |
0.5-0.8 |
0.6-0.8 |
0.35-0.55 |
0.60 |
CL |
0.05-0.07 |
0.08-0.06 |
0.04-0.07 |
0.07 |
F |
2.5-2.6 |
2.7-2.8 |
2.50-3.50 |
3.10 |
SiO2 |
11-14 |
10-11 |
7.00-10.5 |
8.00 |
L.O.I |
8-10 |
7.5-8.5 |
6.5-8.0 |
7-50 |
H2O |
4.0 (max) |
4.0 (max) |
4.0 (max) |
4.0 (max) |
Size Analysis
Size |
Result % |
+4.50 |
3.00 |
-4.50 + 0.16 |
68.0 - 72 |
-0.16 +0.08 |
14.0 - 16.0 |
-0.08 +0.05 |
10.0 - 12.0 |
-0.05 |
2.00 – 4.0 |