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...Soil sampling and analysis james l walworth ph d extension specialist department of water environmental science university arizona oil can provide important information about physical otherwise occasional testing once every few years is adequate in the conditions fertility nutrient status chemical properties absence any noticeable nutritional deficiencies sthat affect a soils suitability for growing plants four steps sample associated with include collection laboratory interpretation results fertilizer or other test determines supplying capacity by mixing management recommendations well look at during very strong extracting solution often an acid combination acids reacts releasing some nutrients as supplies most mineral nutrition higher through root system first step its extracted concentration evaluated based on research that to realize only tiny portion field actually analyzed relates plant utilization concentrations this works thus collecting representative critical but less accurat...