[NAFEX] leachy phosphate?

Kevin Moore aleguy33 at yahoo.com
Thu Jun 18 18:02:52 EDT 2009

It certainly leaches into the subsoil here in the Southeast, but we have almost as much rain as the Pacific Northwest. Phosphorus deficiency is a common problem in this area. Water soluble forms only last for a season or two. Yes, Fungi can be great allies in growing plants. Too bad we have an indigenous fungus here that is outlawed by international treaties and is sought out and destroyed by law enforcement. Their methods do not distinguish between one fungus and another.

From: Alan Haigh <alandhaigh at gmail.com>
To: nafex at lists.ibiblio.org
Sent: Tuesday, June 16, 2009 6:57:42 PM
Subject: [NAFEX] leachy phosphate?

Kevin wrote, "That's too bad. Rock phosphate is more slowly available than the others. That's why it's so good. It doesn't leach out of the soil the way the others do. If you have a rich, biologically active soil, it should be available to the plants shortly after it is applied. If you have dead, chemically burned soils, it may never become available." 
Phosphorus doesn't hardly leach at all- even tripple superphosphate, but quickly forms nearly insoluble precipitates with other minerals becoming mostly unavailable to plants when applied to the soil.  Where phosphorous pollutes water is when the soil itself erodes into the water.   Anyway, that's how I understand it. As a fruit grower and a gardener I have never experienced phosphorous deficiency.  Hooray for our fungus friends. 

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