Seed Consultants Field Agronomist Jordan Bassler says timing and consistency are critical when collecting soil samples.

“Fall is the preferred time because that is when the soil microbes are at their highest activity because the soil is still warm at that time of year,” he says. “Fall also has a little better soil conditions then the spring.” 

He says soil samples can still be collected in the spring, but results may be skewed because of low soil microbial activity and soil temperature.

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