Re: OT - Using-Up the Land, Replenishing the Land Question

Posted by NY 986 on February 20, 2015 at 10:16:59 from (174.236.4.155):

In Reply to: OT - Using-Up the Land, Replenishing the Land Question posted by Bill Va on February 20, 2015 at 09:03:57:

Nutrients such as Potash, phosphate, and nitrates can not be created out of thin air. There are a variety of sources that satisfy NOFA if that is your goal. The three majors can be sourced from animal manure but the concentration and therefore the practicality of sourcing those nutrients from manure vary. My understanding that there are sources of Potash and Phosphate that are mined from the earth that satisfy organic requirements. If you are merely engaged in some sort of subsistence system you can use a rotation involving legumes such as clovers and/or alfalfa to build up the level of organic nitrate to be used for future crops. Whether they can be built up in the short term to eliminate commercial fertilizer to grow sufficient production is another question altogether.

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