If you think your soil may be contaminated, contact your local USDA cooperative extension office (nifa.usda.gov/partners-and-extension-map), which will provide low-cost testing (usually less than $15) and recommendations based on the results. If you use a private lab, make sure it is accredited.
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The Agronomy Handbook is a comprehensive resource that discusses soil properties, plant essential nutrients, as well as soil test results and recommendations. It also covers soil sampling, fertilizer application methods, nutrient deficiency symptoms in plants, plant tissue analysis, nutrient uptake and removal in crops, and conversion factors for U.S. and metric measurements.READ MORE
How to calculate the Cation Exchange Capacity (CEC) is a calculation based on soil analysis results of Ca, Mg, K, Na, and H.READ MORE
This Memo helps you understand the challenges associated with cyst nematodes. We cover how to sample a field or area, how to submit samples for cyst analysis, and how to interpret results and manage cyst nematode affected fields.READ MORE