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Soil Fertility Management Explained: Sufficiency vs Albrecht-Kinsey

This lesson compares the two main soil fertility management approaches used in New Zealand: the sufficiency approach and the Albrecht-Kinsey cation balance system. Dr Ants Roberts, Science Mentor, explains how Liebig’s Law of the Minimum underpins sufficiency-based nutrient management and outlines what scientific research and long-term farm trials show when the two systems are compared. A clear guide to choosing a soil fertility strategy based on evidence, productivity and profitability.

 

Video details
Duration 2:12

Presented by

Dr Ants Roberts, Science Mentor at Ravensdown

Dr Ants Roberts

Science Mentor

Dr Ants Roberts is a Science Mentor at Ravensdown and a recognised authority on soil fertility management with more than four decades of experience. He leads agronomic research and development, works directly with farming shareholders, and trains Agri Managers and staff in soils, fertilisers and pastoral agriculture.