tommy1808 wrote:flyguy89 wrote:VTKillarney wrote:You are missing my point. Sure, some individual organic farms can rely on alternatives to manure. But organic farms simply can’t feed anyone other than a fraction of the world’s elite without dependence on manure. The industry as we know it today depends on manure.
But this is not the main issue. The main issue is that organic farming can’t feed the world. People’s privileges are really showing here. Not everyone can afford to waste money on organic food that is scientifically proven to be no more nutritious than conventionally grown food.
The other issue with organic farming is land use. The amount of arable land that would be required to feed the world's population using organic farm techniques would be staggering..
The ~10% more land you´d need to go all organic are not really a staggering amount of extra land, aside of wheat most staple foods even just need single digit more land, and could easily be offset by even a slight decrease in food waste. We do throw 1/3 of all food calories we produce away after all.
And i am pretty sure that using 10% more land without much in the way or herbicides and pesticides will have less negative impact that exchanging one for the other.
You're taking best-case scenario here. That 10% yield variability is just for fruits and horticulturals, under modern management.... which btw includes a lot of (organic-approved) pesticide applications, and those pesticides cost more (often way more) than the conventional.
If you talk about, say, potatoes or other tubers the yield gap between organic and conventional is about 30% less. Beans? about 20% less. Cereals? Under 50% if you account for increased crop rotation needed.
Horticultural and fruit tree surface is a tiny % of worldwide agricultural land use. Horticulturals + fruit trees + citrus make under 10% of land use (8% or so). The rest are all crops where the gap between organic and conventional is much higher. Especially cereal where the gap is the highest makes up 2/3 of global land agricultural use.
Dial back the technology (think developing nations) and the gap grows, but the worst thing is how those organic crops are ill-equipped to deal with unexpected pests and a worse than average year for a certain fungus or insect might mean total crop loss.