Here is some info you might enjoy: Phosphorous in soil - a detailed explanation (Livestock and Poultry Environmental Stewardship Curriculum): http://www.lpes.org/Lessons/Lesson34/34_3_Phosphorus_Soil.pdf Phosphorous binding (New York Water Environment Association): http://www.nywea.org/clearwaters/321031.html Phosphorous activating bacteria: http://www.inventor.hu/Olympic2000/ga1/ga1101e/ga1101e.htm Heide Lawrence F. London, Jr. wrote:
Heide Hermary wrote:Actually, phosphorous (phosphate) exists in the soil as an anion and is not held at cation exchange sites. However, instead of being leached out of the soil it forms water-insoluble compounds with other minerals, depending on pH. Phosphorous uptake is 500% or so higher from organic matter than from the mineral soil. HeideGreat information. Many thanks, Heide. What other minerals does P combine with and would amending soil with rock dusts enhance this process thus making P more readily available, given high soil organic matter content? LL -- L.F.London lfl@intrex.net http://market-farming.com http://www.ibiblio.org/ecolandtech
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