When it is needed
When it is necessary to check whether soil variability, nutrition or water conditions could have affected crop development.
What we examine
- Field plots with differing plant conditions.
- Soil samples and examination reports.
- Field use history and fertiliser information.
Materials to prepare
- Plot map and problem zone boundaries.
- Crop rotation history and main operations during the period considered.
- Fertiliser application, irrigation and drainage data.
- Analysis reports together with sampling records and plans.
Sample questions
- Which soil properties are supported by the submitted examinations?
- Are the sampling locations and depth representative for the task posed?
- Are results from different inspections comparable?
- Which parameters may relate to crop condition?
- Which input data are needed to check water or nutrient stress?
How the work is carried out
- Check the connection of samples to the plot, depth and sampling date.
- Compare parameters with the crop, seasonal conditions and damage distribution.
- Prepare conclusions and, where needed, a further inspection programme.
Result
Agronomic interpretation of input data and description of growing factors to be checked.
What affects the conclusions
A single sample result does not automatically characterise the whole field. Specialist contamination examinations and an official soil fertility assessment require separate briefs.
Frequently asked questions
Can last year's analysis be used?
Yes, as part of the input data. Its significance depends on sampling time, subsequent operations and the parameters examined.
Should I collect soil myself?
It is better to agree a sampling plan first. A random mixture of soil from different zones may conceal differences important to the examination.