Factors affecting critical phosphorus values and responsiveness in different soil types

Abstract

Key findings »» The Making Better Fertiliser Decisions for Cropping Systems in Australia (BFDC) database allows us to search for soil test calibrations for four macronutrients across a range of crops, soils types, regions and time spans. »» As an example, the critical range for soil test P (Colwell) for wheat grown in red chromosols in NSW has increased under minimum-tillage management.