Comparison: Maincrop potatoes grown on randomised replicated plots were compared with
conventional fertiliser as TSP and MOP.
Conclusion: There were significant yield differences where fertiliser was applied but not
between Fibrophos and the comparable TSP and MOP suggesting that Fibrophos
is a suitable nutrient for potatoes. The results of the soil analysis showed
that Fibrophos can improve the soil K index by at least as much as MOP.
The results suggest that Fibrophos is as effective as conventional nutrient sources.