--- In [email protected], "sparaig" <[EMAIL PROTECTED]> wrote:
>
> --- In [email protected], bob_brigante <no_reply@> 
wrote:
> >
> > --- In [email protected], "sparaig" <sparaig@> wrote:
> > >
> > > --- In [email protected], "jyouells2000" 
<jyouells@> 
> > wrote:
> > > >
> > > > --- In [email protected], bob_brigante 
<no_reply@> 
> > wrote:
> > > > >
> > > > > The Plains drought near the Brahmastan, where the TMO plans 
to 
> > build, 
> > > > > is bad -- makes the proposed organic farming operation 
unlikely:
> > > > > 
> > > > > "That part of the state is going to be out of water in 
about 25 
> > years 
> > > > > at the current rate of consumption," said Mike Hayden, the 
> > secretary of 
> > > > > the Kansas Department of Wildlife and Parks and a former 
Kansas 
> > > > > governor.
> > > > > 
> > > > > http://www.nytimes.com/2006/09/16/business/16farm.html
> > > > >
> > > > Think yagyas. (Endless fund raising possibilities.)
> > > >
> > > 
> > 
> > > Heh. The community there is very old and probably doesn't use 
the 
> > latest agricultural 
> > > practices. I'm willing to bet that if the TMO manages to set up 
an 
> > organic farm there, they can 
> > > stretch the water to last indefintely.
> > >
> > 
> > *****************
> > 
> > The problem is, Kansas is in the rain shadow of the Rockies, so 
crops 
> > there depend on sucking up from the Ogalalla reservoir, which 
will be 
> > empty in 25 years. So no matter how clever water use is, the 
water is 
> > still going to go away, the reason being the same as oil deposits 
are 
> > going to go away: the resource is being depleted faster than 
nature 
> > can restore it.
> >
> 


> How much water does the MUM greenhouses use, net?
>

I'm not so sure that greenhouses have much of an advantage in water 
conservation. Most of the water probably goes into the veggies, swiss 
chard for instance being 94% water 
http://waltonfeed.com/self/h2ocont.html .

The raison d'etre for heated greenhouses is being able to grow 
veggies year round in the Siberian climate of the Midwest, not to 
conserve water, although I guess there must be some savings: 
http://aginfo.psu.edu/psa/ws2000/green5.html

One of the biggest problems with irrigated crops, especially when you 
try to recycle greenhouse water, is build-up of salts:

"Several hundred thousand acres on the west side of the San Joaquin 
Valley have severe drainage problems, to the extent that the long-
term productivity of the land is in question. The soil is naturally 
high in salt and selenium, and even "fresh" irrigation water contains 
salt that build up in soil over time. Farmers use irrigation water to 
leach unwanted salt from around crop roots, but leaching also 
threatens the high groundwater table. Despite their best efforts, 
farmers are fighting a losing battle: salt buildup from heavy 
irrigation is making the west side farmland less productive."

http://www.caff.org/publications/aa/02_spring/farm_management.shtml 








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