Extraction+of+roots

  • 131Montana — This article is about the U.S. state of Montana. For other uses, see Montana (disambiguation). State of Montana …

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  • 132Soil pH — is the pH of soil water. It is based on the measurement of pH, which depends on the activity of hydrogen ions (H+) in a solution.There are many different methods to collect soil water, all which influence the measured soil pH in one way or… …

    Wikipedia