Name: Superphosphate explained: NZ's most widely used phosphorus fertiliser
Uploaded: 2026-05-11T00:00:00+12:00
Description: This lesson explains why superphosphate is one of New Zealand’s most widely used pastoral fertilisers. It covers how superphosphate supplies soluble phosphorus and sulphur in equal proportions, why it suits clover and grass-based pastoral systems, and how maintenance fertiliser replaces nutrients lost through production.

This lesson explains why superphosphate remains a cornerstone of New Zealand pastoral farming. Mike Manning, Strategic Science Advisor, previously Chief Science Officer and Sarah Bassett, Agri Manager outline how it supplies phosphorus and sulphur in the right balance for clover growth, how maintenance fertiliser replaces nutrient losses, and why withholding fertiliser leads to declining pasture production. A practical guide to maintaining soil fertility and pasture performance.

Video details
Duration 2:03