Post(s) tagged with "agriculture"

The West Is Returning To Grassland

The great drought is making ‘ranching’ beef cattle unaffordable. I put ‘ranching’ in quotes because it sounds old-timey, and conceals the fact that it’s industrial agriculture, based on low-cost oil, abundant water, cheap fertilizer, cheap grain, and the beneficence of the US Department of Agriculture. And now that water is getting scarce — and likely to remain scarce for decades — the system is falling apart.

However, some ranchers are doing pretty well, principally because the reverted to native grasses in the fields, and are raising grass-fed, not grain-fed, beeves:

Stephanie Strom, A Long Drought Tests Texas Cattle Ranchers’ Patience and Creativity

[…] the Prices have had to buy hay to feed their cows during only two weeks in the last three years. Their animals graze the “bunch grasses” that were native throughout the prairie when the buffalo roamed and that Mr. Price reintroduced on his ranch after admiring their resilience on a small patch of virgin prairie left on his property.

Those grasses, which grow to five or six feet tall, have long roots that can tap into water far underground. Though they live a long time, when such grasses die, the roots deteriorate, helping to aerate the land for better water penetration. The thicker, taller grasses also create a kind of webbing that slows runoff, keeps sediment out of lakes and tanks, and creates shade that protects lower growing grasses and helps the ground retain water.

At times, Mr. Price rotates his cattle twice a day to give the grasses a chance to recover. He has not had to cull his herd, maintaining about 200 head throughout the drought, though he has not replaced cows as quickly as he would have if rainfall patterns were more normal.

He also has developed another source of revenue: hunters from Dallas and Fort Worth who pay to shoot the quail that like to nest in the bunch grasses on his land.

The Prices have won several awards for their land management practices. “I believe this is the best way to do it, not just for profit but also for sustainability,” Mr. Price said. “But every ranch is a specific entity with its own resources — its own shade, its own water.”

Asked whether he thought the Texas cattle industry would ever recover its former glory, Mr. Price thought for a moment. “We’re all very concerned about the decline in cattle numbers and also about the losses of infrastructure, feedlots and slaughtering facilities,” he said.

Reminds me of Joel Salatin of Polyface Farm in Virginia, who has been advocating grass-fed cattle for decades as the best way to convert sunlight into protein. It requires more human interaction — moving the cattle from one field to another to allow the grasses to recover — but less of all other artificial inputs. 

The recovery of the grouse speaks volumes about the recovery of the grasslands. In a few years, the only ranchers left in the dry lands will be the ones that fall back on tending the grasses, and using the cattle to fertilize them, with a valuable by-product: beef.

U.S. farmers converted more than 1.3 million acres of grassland into corn and soybean fields between 2006 and 2011.

- Corn and soy wiping out America’s grasslands at fastest pace since the 1930s.

Update: This is more about America’s heritage landscapes - grasslands - and less about particular crops. Grasslands provide important habitat for countless species. President Theodore Roosevelt protected millions of acres of grasslands by including them in several National Parks. Converting them to crops destroys habitat for animals, changes and poisons the soil, pollutes rivers, devalues people’s properties, among numerous other environmental harms. Destroying nature for a quick buck is not the right direction for America’s future. The situation is worse when climate change is factored in.

And, the US Forest Service has an excellent overview of how grasslands are threatened by agriculture and climate change.

(via climateadaptation)

Source: climateadaptation

Facing Planetary Enemy No. 1: Agriculture - NPR ⇢

Dan Clark via NPR

Can we feed the world without destroying the environment?

It’s a good question, because agriculture is probably the single most destructive thing that humans do to the earth.

Consider: Cropland and pasture now cover 40 percent of our planet’s land surface; farming consumes nearly three-quarters of all the water that humans use for any purpose; farming accounts for a third of all the emissions of greenhouse gases that humans release into the environment. (Those greenhouse emission come from clearing forests or grassland for crops, the emissions of methane from rice paddies, and the conversion of nitrogen fertilizer into nitrous oxide — a powerful greenhouse gas.)

That’s bad enough, but Jonathan Foley from the University of Minnesota, who led this new analysis, says it’s likely to get worse. Demand for food is expected to double over the next forty years. Are we truly, to quote environmentalist Bill McKibben, facing the “end of nature”?

According to the new study, not necessarily. But avoiding mass deforestation and food scarcity is going to take some very big changes. Briefly: Big investments in food production in places (think Ukraine and Uganda) where current farm land isn’t producing as much food as it could; much more efficient use of water and fertilizer; less wasted food; and (controversy alert!) eating less meat. About 40 percent of the planet’s crops, according to this study, currently are fed to animals.

Unfortunately, the paper does not really explain how this will happen. There’s no global dictator who can, for instance, abolish feedlots where corn is fed to cattle.

The issues with terrestrial meat can’t be waved away by suggesting it will be banished. Like the other issues — water use, etc. — smarter approaches need to be undertaken.

Polyface farm style grassfed beef raising is probably the greatest return on sunlight turned into protein. And we will see the adoption of techniques (and others) that rely on raising meat animals on land that is unsuited to agriculture: like raising beef cattle and fowl on dryer grasslands and pigs in oak forests, and without feeding them grain.

The economics of food are already changing, since we are headed for an era of increased urbanism, and at the same time, a planet where connectedness is both a tool and a danger. The global food system — where apples come from China and tomatoes are shipped from Mexico to New York City, both of which are over 90% water — is inherently unsustainable, and is based on the low cost of oil, and our willingness to burn it without consideration for ‘externalities’ like climate change.

There are real dangers ahead, since the confluence of these trends — increasing demand for food, decreasing water resources, and increased cost for oil — suggests that sustainable agriculture is perhaps the greatest single challenge we face.

I believe that new web-based social tools — food tech — is of critical importance for the world, and I have a hard time imaging why world governments are not allocating serious money on these problems.

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