The soil probe or auger is the most desirable tool for collecting soil
samples. The soil probe works better than a shovel or trowel because
these tools equally collect soil in a continuous core from the surface
through the entire sampling depth with minimal disturbance of the soil.
It also allows for faster sampling.
Some of the disadvantages of a soil probe are: it cannot be used
when the soil is too wet because the soil compresses; it cannot be
used when the soil is too dry because it is difficult to penetrate
the soil. Soil probes also do not work well in soils that contain gravel.
Soil probes are available through agricultural supply companies or your
agriculture Extension agent may be able to help you locate a supplier.
Cost is typically $25 or more.
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