permaculture

[Jay Woods <woodsjay@cox.net>]

On Thursday, June 07, 2012 09:38:10 PM Gasper Family Farm wrote:
> Are we not facing a peak in the supply of mined phosphate? This is one of
> if not they key yield and plant health limiting nutrient; and also the
> hardest one to get outside the mine. Other than the mandatory recycling of
> phosphorus from humanure, are their any other permanent solutions for
> sourcing phosphorous for the farm (on a broad acre scale)?
> 
> Pete

This is the reason for planting crops that pull nutrients such as potash and 
phosphate from deep in the soil (over three feet) as one component of the 
annual cropping. An alternative is the use of tree crops that mine the soil 
in 
the same sense. The prunings and thinnings while the leaves are still on will 
compost carrying the high mineral content for use with the vegetables.
> 
> On 05/11/2012 07:54 PM, Lawrence F. London, Jr. wrote:
> > It should seek to
> > reduce off farm inputs. Natural, mined phosphate and other minerals will
> > likely be needed from time to time as crops deplete levels of nutrients
> > needed for healthy livestock and plant production. If enough acreage is
> > available the other major nutrients can for the most part be generated
> > on site and later recycled.
> 
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