Topic: soil test

Test what when to help crop nutrition decisions?

Lab tests help advisors with fertiliser and soil amendment planning. Without lab tests, crop nutrition can be a ‘best guess’. Returns from fertiliser inputs might not be optimal. Yields could suffer.
Soil, plant tissue, and grain testing can guide crop nutrition throughout the season. Soil tests indicate crop available nutrient levels […]

Kick-start crops with compost

Compost can improve overall soil health and benefit crops. The organic matter may improve soil structure, infiltration and porosity.  The soil’s water and nutrient holding capacity may get a boost. Compost feeds the microbes in soil, which in turn increases soil fertility.
Compost and nutrients
Individual composts are different. The source […]

How to include ammonium-N in recommendations

It used to be that nitrate was often the only form of nitrogen (N) specified in soil test results. Now it’s common for soil test results to specify the quantity of ammonium-N as well.
Recently some unusually high ammonium levels – equal to or higher than nitrate levels – have […]

Q&A: Target levels for Zn & Cu

Question: Target trace element soil concentrations
What target trace element (Zn and Cu) soil concentrations should a farmer be aiming for on duplex mallee soils? (Cascade, WA)
Received: 19/09/2014
Answer
The value of soil tests in diagnosing micronutrient supply is limited. Soil test values give a general view of the potential response to added […]