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SOIL SAMPLING AND TESTING Soil testing is the best guide to the wise and efficient use of fertilizers and animal manure. The first step in soil testing is the collection of a representative sample. Soil properties vary a lot in a field. The soil sample must accurately represent the whole field where manure or other fertilizers are going to be applied. A minimum of 15-20 sub-samples is needed to make a composite sample for a field. For details of soil sampling see: How to Get a Good Soil Sample. Sample bags, soil probe and other assistances are available at your County Extension Office. Soil samples should be submitted through your county extension office or directly to OSU Soil, Water and Forage Analytical Laboratory in Stillwater. You will find all the information you need about soil test at our lab web site.
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