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Soil test??'s
Terry Horton wrote:
Plants are not just passive recipients of whatever is in solution around them. They in effect chemically "mine" surrounding minerals, and feed other organisms in return for a supply of water and minerals Absolutely! I wonder if research has been done to model the mass transfer mechanishm that occur in the soil... that would be an interesting project. I would think that every time you water a plant, the mass transfer drastically changes and a more homogeneous concentration profile is achieved, albeit temporarily. Are you seeing evidence of P deficiency? No, because everything gets bone meal when planted and organic fertilizers throughout the year. -- Victor M. Martinez http://www.che.utexas.edu/~martiv |
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