Soil and water pollutants
Organic or inorganic substances can be present in harmful amounts in soil, water and air.
Cation exchange capacity
Cation exchange capacity (CEC) is the total capacity of a soil to hold exchangeable cations.
Australasian Soil and Plant Analysis Council
ASPAC provides a national and international focus for promoting excellence in all aspects of soil and plant tissue analysis...
Trace nutrients
Trace nutrients are chemical elements that are present in soil in small concentrations.
Processes of soil nutrient supply to plant roots
Professor Richard Bell explains how plant roots take up nutrients from the soil by diffusion, mass flow, and interception.
Recycled nutrients
As inorganic fertiliser costs continue to increase, greater reliance may be placed on retaining and recycling nutrients on-farm.
Role of potassium in tolerance to stress
Professor Richard Bell explains how potassium helps plants buffer against stress like disease and drought.
Accumulation of phosphorus in high rainfall pastures in WA
In the south-western agricultural region of WA, the strategy of fertilisation has changed in the decades since new land...
