Thank you for your post Phebagirl.
Your concerns are valid. I share the philosophies of alternative agriculture but something about articles like this really get my goat. I distrust any fundamentalist dogma. Is it just me or does anyone else take issue with their self satisfied, holier than thou attitude?
I was one of the first members of the organic club at U of G, I've worked on organic farms. The people I know who are farming organically are great and don't proselytize. But this article helps me understand the people who say organic agriculture is evil.
Conventional farms could feed the world today. It's a distribution problem, there is enough food in the world. It's poverty that causes hunger, not lack of production. We will need to make massive changes as we powerdown, we should use what works. The realities of a market economy and a government cheap food policy have caused the industry to develop the way it has. Good small farmers are forced out of business because of the pressure to get big or get out.
If organic farms can have higher yields in the developed world why don't they? If they have higher economic yields conventional farmers would adopt those methods.
Organic farmers often choose lower yields, their economics favour a lower input/output model, and they don't want to push the biological system. Too many organic farms are "chicken manure" farms, really a conventional approach to agriculture with a different set of rules. They truck in their nitrogen. It's not sustainable and they are dependent on conventional chicken farms.
To say that organic methods could triple sub-Sahara African yields is unfair. Any farming system would increase yield. Traditional methods have been lost and the conventional system has broken down. Low international commodity prices make it impossible for these farmers to purchase the inputs they once did. Yields are between 17 bu./ac (Sacks) and 25 bu./ac.
IITA US now averages 150 bu./ac.
The best organic farms are dairy farms. They produce their nitrogen with the alfalfa crop and market it through the cows. Organic cash cropping is a more difficult proposition, although interesting work is being done with living mulches. You don't have to be an organic farmer to recycle on-farm nutrients. The University of Manitoba is doing work on low input agriculture, optimizing plant protection products and fertilizers for sustainability.
What does recycling nutrients in integrated agriculture systems have to do with not growing GMOs? Having corn and potato produce their own BT seems the low input way to go. I guess I object to having this bundle of technologies tied up with a piece of ribbon and held up as the be all to end all.
One reference to Jevons give his yields with bio-intensive methods as; 2 100 ft.sq. beds produce one loaf of bread per week. That works out to 140 bu./ac. or 100 bu./ac if we subtract the walkways. That is an excellent yield, 60 to 80 bu./ac would be a very good crop in Canada. In Holland average yields are 120 bu./ac., but that is with heavy N applications.
There is no magic bullet here, fu-fu dust doesn't increase yield. It's a matter of input/output. I'm assuming Jevons is irrigating and using alot of compost fertilizer. Sure, we could increase inputs and increase yields but irrigating corn isn't economic at $4.00 /bu. Being organic isn't going to solve the water crisis in the American SW. Trucking in chicken litter isn't sustainable.
I get tired of this "organic good", "conventional bad" assumption. Many consumers are choosing organic for the food safety issue. This seems self-centered to me. Organic agriculture was originally a biological design approach to the farm as organism, integrated into the biome and society. People who buy organic only because "our food is contaminated" are willing to buy at Wal-Mart and that is not sustainable.
We need good farmers who are moving toward sustainability. Whether they are conventional, organic, biodynamic or use permaculture is less important. Conventional agriculture talks about sustainability and stewardship, you don’t have to be organic to be a good farmer.