by P.N. Soltanpour and R.H. Follett

Colorado State University routinely analyzes soil samples Colorado State University routinely analyzes soil samples for pH, soluble salts, organic matter, nitrate nitrogen, phosphorus, potassium, zinc, iron, copper, manganese, lime and soil texture. This test replaces three separate tests previously used for extraction of these same nutrients. It is faster and more economical. 

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