systlin:

kawuli:

This person is my new best friend

Farming systems need to fit into their natural and social environment. Sometimes we describe this as a socio-ecological niche.

Caption; 

In a minute.

So, taking it that you said you live in
Arizona and “your family has a farm in Chihuahua,” A quick
congratulations are in order. You’re an absentee landowner! You’re
right at the peak of farming’s social pyramid. Living the dream.

So you probably don’t participate in
the day-to-day management, you just collect checks. Pretty common
situation for absentee landlords. From that distance, it’s
understandable that you have a poor grasp on water, land, and how
they play out in various types of agriculture.

But let’s take a step back.

Lots of cultures have used low or no
meat diets. The Ganges valley, ancient Egypt, China, much of early
Europe, ect.

Notice anything in common there?

They’re all very, very wet. Plants that
are edible for humans grow readily.

They also had intense hierarchies where
elites could just tell the lower classes they weren’t allowed to eat
meat-whether via religious teachings, custom, or just straight-up
economic exploitation to where animal protein was unattainable. But
that’s a whole different discussion.

On the other hand, lots of cultures
have used mostly or all animal diets.

E.G. The Bedouin, Mongols, Maasai,
Inuit, ect.

What do these have in common? They’re
in places that are either very dry or very cold. Either the plants
that grow are very sparse & tough, or none at all.

Humans can only digest specific types
of plant matter. We need tender stems, leaves & fruit; enlarged
seeds, or energy storing roots.

The entire rest of the plant is
inedible for us. Stalk, branch, dry leaves, ect.

And without intense irrigation, the
only plants that grow in dry areas are entirely made of things
that humans can’t digest. They’re almost entirely cellulose. Tough
stalks, fibrous leaves covered in wax and hair, thorns, ect.

That’s why we call these areas ‘scrub’.
The only use humans can make of the natural vegetation is to scrub
pots.

But…cows, sheep, goats, horses,
bison, deer, camels & other ruminants can digest all of it.

That’s what those 3 and 4 chambered
stomachs are for. These animals GI tracts are fermentation chambers
full of microflora that break long, tough cellulose molecules down
into sugars and fatty acids that the cow can use.

We can’t do that. We eat straw, we just
poop out straw.

That’s why people living in deserts,
scrub & dry grasslands aren’t vegetarian. They’d starve. They
kept close to the animals that can digest what grows there;
ruminants.

(The oceanic food chain that Inuit &
other maritime peoples are looped into is a whole ‘nother
discussion.)

Failure to recognize the role of local
environment in diet is a major oversight in the vegetarian community
at large, so again, no personal blame here.

Traditional vegetarian societies are
trotted out to showcase that low/no meat diets are possible. But it’s
done w/o recognition as to why ‘those particular’ societies did it,
and others did not.

Paying attention to local environment
is a huge part of sustainability, and yet sustainability movements
don’t always do so well at that.

We can also fall short by failing to
recognize that for dry regions, the bottleneck in productivity isn’t
land, it’s water.

As an absentee landowner, you may or
may not be aware of how much irrigation water it takes to grow
vegetables in a desert. Math time.

Let’s start w. cows. Best figures for
cow carrying capacity in landscape similar to Chihuahua are for dry
part of CO. Double that for Chihuahua’s longer growing season, and 10
cows would need about 73 acres to live on (wild scrub w no
irrigation.)

Cool, so we don’t have to irrigate to
feed those cows. All we have to do is give them drinking water. How
much? A cow needs about 18.5 gal/day, so 10 of them for a year would
need about 67,000 gallons.

67,000 gallons is a decent amount of
water.

Now let’s look at how much it takes to
grow vegetables on that same land.

Most plant crops need about an
acre-inch of water per week.

For the non-farmers and absentee
landlords following along, an acre-inch is just how much water it
takes to cover an acre of land 1” deep.

It’s about 27,000 gallons.

An acre of crops needs that every
single week.

Chihuahua’s got this amazing long
growing season. So let’s say a veggie, grain, soybean or other plant
protein farm in Chihuahua’s got crops in the ground 40 weeks out of
the year.

73 acres x 40 weeks x 27,000
gallons/week = 79 MILLION gallons of water.

That’s a thousand times more water.

It takes a thousand times more water to
grow an acre of crops for human consumption, than it takes to grow an
acre of cow on wild range.

Again, as an absentee farm owner you
may or may not be aware already. But for audience at home, most of
Chihuahua’s irrigation water comes from the Rio Conchos.

The river’s drying up so hard that it’s
the subject of a dedicated WWF preservation project.

“But that’s not a fair comparison. An
acre of crops can feed 10x as many people as an acre of cattle.”

Exactly. A crop-only diet can feed 10x
as many people. But it takes 1000x as much water.

In places where there’s limited land
and a surplus of water, it makes a lot of sense to optimize for land,
so there, grow & eat crops.

And in places where there’s a lot of
land and limited water, it makes sense to optimize for water, So
there, grow & eat ruminants.

It’s really interesting to me that the
conversation around vegetarianism & the environment is so
strongly centered on assumptions that every place in the world is on
the limited land/surplus plan.

You know what region that describes
really well? Northwestern Europe.

In many ways, viewing low/no meat diets
as the One True Sustainable Way is very much a vestige of
colonialism. It found a farmway that works really well in NW Europe,
assumed it must be universal, and tries to apply it to places where
it absolutely does not pencil out.