TPS Lab Blog
It is of upmost importance that the soil sample be representative of the entire field.
This Soil Sample Guide illustrates soil depths for reference to plant roots and gives step-by-step instructions for how to collect a soil sample.
Calculating Fertilizer Application Rates from Your TPSL® Soil Test Report
Why should I have my soil tested?
TPS Lab is getting a lot of soil samples recently from vineyards of all sizes and ambition.