Soil sampling paddocks with a history of precision placement of fertilizer requires special planning. Some elements, such as soil P, remain very close to where they were placed in the soil. Random sampling could give falsely high or low test results depending on how the sampling pattern intersects with the placement […]
Topic: soil sampling
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 […]
Surveys have indicated soil testing is underutilised in Australia for developing paddock or site specific fertiliser applications. Soil testing provides a seasonal index of the nutrients present in soil and helps inform decisions on the right types, methods and rates of fertiliser to meet crop requirements. The process for developing […]
Diagnosing the cause of symptoms seen in crops can be helped by sampling soils and plant tissues during the growing season. Where patches of poor growth are seen, either soil or plant tissue samples from within the good and poor patches can be taken and sent for analysis.
For plant tissue […]