1. Peat/organic soils DO NOT retain water-soluble P, form of P present in superphosphate, TSP or DAP. 2. Scientific research has...

1. New Zealand has over 200,000 ha of peat (aka organic) soils, mostly in the Hauraki Plains and the Waituna catchment in Southland. Most...

As people who read my website www.quinfert.co.nz or my posts on LinkedIn will know, I have started taking part in the debate on...

Does New Zealand need regenerative pastoral agriculture? The rapidly growing interest in regen farming has raised the ire of many dairy...

The complex judgement comes down to 6 key points: Ballance sought a permanent injunction preventing Quinfert Algerian RPR being described...

Industry finally dumping the Fertmark 30-minute citric P test for RPR

16. What actually is an RPR? The stated knowledge in 2019.

15. ‘Dicalcic’ vs Reactive Phosphate Rock (RPR), elemental S and Fine Lime (updated September 2019)

14. Quinfert Algerian RPR; All the facts

13. An Open Letter to New Zealand Dairy Farmers

12. The Sources and Causes of Soil P Losses and the Role of RPR in Reducing Them

11. An open letter to New Zealand farmers

10. The potential of RPR

9. Quin Environmentals Provides Two Quinfert RPR Grades (V1 and V2)

8. The time has come for New Zealand to completely stop making superphosphate

7. The facts about serpentine superphosphate

6. Important facts about superphosphate and RPR

5. The effect of the sulphur form used on the ratio of S to P required

4. What every farmer should know about cadmium (Cd)

3. Using RPR in low soil P, low rainfall, high pHor extremely high P retention (>97% PR)

2. How to define a true RPR

1. Economic and environmental benefits of reactive phosphate rock (RPR)