Single Super Fertiliser (SSP) used to be generally spread at a hundred weigh per acre (CWT) on pastures. The following helps you convert these imperial fertiliser application rates into metric and compare other various phosphate fertilisers.
1 CWT/acre = 125kg/ac of Single (~309kg/ha)
Equivalent phosphorous application rates (125kg/ha) using other available phosphate fertilisers:
Double Super S5 (0-16-0-5) – 70 kg/ha
Double Super S9 (0-15-0-9) – 74kg/ha
Double Super S13 (0-14-0-13) – 78kg/ha
Double Super S17 (0-13-0-17) – 81kg/ha
Triple Plus Super S10 (0-18-0-10) – 62kg/ha
Triple Super (0-21-0-2) – 53kg/ha
MAP (10-22-0-2) – 50kg/ha
GoldPhos (11-18-0-12) – 61kg/ha
Tunza Feed (26-10-0-12) – 110kg/ha
