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Can We Grow More Food on Less Land?

nytimes.com

51–60 of 287 posts

Re: Can We Grow More Food on Less Land?

#51
post #8

Earlier quoted context omitted.

Continuing to improve artificial meat (e.g. Impossible Burgers) to get to the point where it's better than the real thing. You don't change people's minds by taking things away from them. You give them a better substitute.

Artificial food will always lack the bio-availabilities of real food our bodies evolved to process. For example, vitamin C artificially synthesized from glucose is more difficult to assimilate by the guts than "natural" vitamin C, especially when consumed with carbs.

But it’s easy to produce, consume and absorb enough vitamin C.

Vitamin C also breaks down fairly easily when cooked (necessary or common with a lot of foods).

Iron is a bigger issue where non-absorption of non-organic sources can cause some GI upset.

Re: Can We Grow More Food on Less Land?

#53
post #30

What would make people eat less beef? Since taxes seem a hard sell, would subsidizing chicken + non-meat protein help? As a vegetarian I'm trying to get my head around what would help change the behaviour of the meat eating HN members.

I have a mirror-image question: What will it take to convince vegetarians that a meat-based diet is actually the healthiest way to eat, and that meat can be raised in humane, environmentally-friendly ways? :-) Edit: This a serious question. Down voting is hardly a productive form of dialog.

I imagine it depends on the vegetarian.

And not all meats/animals are the same. I myself eat meat, but do not eat mammals. I am looking forward to the widespread availability of safe, delicious, lab-grown meats.

> the healthiest way to eat

I suspect that, for most people, the best plant-based diet is equal to the best omnivorous diet in terms of nutrition. Admittedly, it can take more effort to get your protein.

> meat can be raised in humane ways

"Humane" is a vague word. Some will tell you that slaughtering an animal at all in not humane.

> can be raised in environmentally-friendly ways

This would be really hard for many animals. Show me a carbon-neutral cow.

The ones that live in tiny spaces and eat corn have high carbon footprints because of all the farming that has to happen to feed them and all the land that is prevented from being forest to serve that need.

We don't spend nearly as much energy feeding the free-range ones, but the land-footprint needed to serve them is even greater.

Re: Can We Grow More Food on Less Land?

#54
post #25

Or we could stop throwing away nearly 1/3 of the food we produce...

Great point. As a kid growing up in India, reading about recurring starvation / famine there, and in Africa, etc., I also read about some European countries dumping mountains of butter and other edibles into the sea, due to surpluses, and maybe to keep the price up. I mean, I understand it is about economics, supply and demand, profits, etc., but still, shudder

Instead of making the famous mountain of butter (beside a lake of milk) they now pay famers not to farm, which has its own oddities. Including discouraging of re-wilding I think, as the land has to be plausibly farm-able to get the cash.

This aside, it's worth knowing that developed countries typically throw away much less food than developing ones. Basically because Tesco is much better at logistics than a million guys trying to drive into Delhi. I don't have the link to hand but there was a nice comparison US vs Mexico on this somewhere.

Re: Can We Grow More Food on Less Land?

#55

Earlier quoted context omitted.

I'm not interested in eating less meat so we can grow the population more. It's not a cost issue. Why do we want a population size that requires people to cut back on quality of life?

eating beef being higher quality of life may be less real and more perceived (because of habit and freedom), given that there are several similar substitutes.

When it comes to quality of life perceived is real. The substitutes suck. I've tried them. If that changes then I will switch over.

Re: Can We Grow More Food on Less Land?

#56

Earlier quoted context omitted.

I am not an agronomist, but my instinct is that companion planting interferes with large-scale farming, where machines or poorly paid humans in a hurry need to easy access to a single crop to harvest, and often destroy the field as they work. I'd like to think if the yields were worth it we'd have worked around that, but possibly robotic harvesters can take us there.

And that is the crux of the entire question. You get what you incentivize. Current US Farming practices are extremely incentivized towards singular homogenous products using an absolute minimum of human labor.

Eh, grains are never the problem. Essentially none of the problems you hear about in agriculture apply to grains.

We can produce just staggering amounts of grain on a per-acre basis, and we can ship them without refrigeration and store them for long periods of time without any significant loss of nutritional value. The carbon, energy and monetary cost of shipping huge quantities of grain from the center of the US to the coasts where people live is negligible.

You don't have the complex social issues of migrant and immigrant labor with grain production; I mean, it wouldn't surprise me if there's some, but it's definitely not a necessary component the way it is in current vegetable production and in meat processing.

There's some potential problems in water usage in some places grains are produced, you can have some good conversations about fertilizer and pesticide production, and about soil maintenance, and we continually want to be working to improve the resiliency and productivity of the crop varieties, but grains are in pretty good shape and there's a clear road map for future work, with lots of incremental progress being made every day.

Produce and meat production is where the big gains are to be had, for the environment, food security, and improving the conditions of working people. Just bank on having half our calories coming from massive grain farms located at great distance from the population centers and try to figure out how to fix the rest, and then maybe it will be time to revisit grains.

Re: Can We Grow More Food on Less Land?

#57
post #7

What would make people eat less beef? Since taxes seem a hard sell, would subsidizing chicken + non-meat protein help? As a vegetarian I'm trying to get my head around what would help change the behaviour of the meat eating HN members.

That is the wrong mindset, trying to fix the effect and not the cause.

What cause? The guy wants people to eat less meat. He's not saying that people eating meat is an effect of some other problem that he wants to solve.

Re: Can We Grow More Food on Less Land?

#58

Why is food grow not stuck up vertically? I mean let's go 3D, since at least majority of vegetables and most fruits do not need more than height of 2 feet of space. It also surprised me how old school modern farming still remains. Look at the first picture from this article: a bunch of modern tractors unnecessarily burning oil, unnecessarily operated by humans. By now this should be three times the size field with 15…

“Its a matter of setting up bunch of mirrors reflecting sunlight. Of course you need sun to grow.”

Doesn’t work > see thermodynamics.

The mirror you’d be setting up would have to set up away from the building where the food is grown and therefore occupy space.

In agronomy there is a concept that the rate of growth is set by whichever one necessary nutrient is limited. Since we fertilize and pump water, the limiting factor is sunlight.

EDIT: 1. This is why Brazil gasohol is the only net positive bio-fuel

2. Manual picking of produce is far superior to mechanized harvest. Tomatoes in the US are large and tasteless because they’ve been bread to be easily picked by machine. ( A lot of thought goes into picking a ripe fruit. It’s not obvious AI can do that. Or that the robots can ever grab fruit with dexterity and w/out crushing)

3.What energy source do you want to run your automatic tractors off of? Diesel for agriculture is arguably the segment that should be given the most slack when transitioning to “green” alternatives.

Re: Can We Grow More Food on Less Land?

#59
post #30

What would make people eat less beef? Since taxes seem a hard sell, would subsidizing chicken + non-meat protein help? As a vegetarian I'm trying to get my head around what would help change the behaviour of the meat eating HN members.

I have a mirror-image question: What will it take to convince vegetarians that a meat-based diet is actually the healthiest way to eat, and that meat can be raised in humane, environmentally-friendly ways? :-) Edit: This a serious question. Down voting is hardly a productive form of dialog.

You may be getting downvoted because your assertions are based on opinion, not fact. Many people don't want to take the time and effort to change a single stranger's opinion. cjrd is an exception and I'll point to their comment.

Re: Can We Grow More Food on Less Land?

#60

Earlier quoted context omitted.

And that is the crux of the entire question. You get what you incentivize. Current US Farming practices are extremely incentivized towards singular homogenous products using an absolute minimum of human labor.

Eh, grains are never the problem. Essentially none of the problems you hear about in agriculture apply to grains. We can produce just staggering amounts of grain on a per-acre basis, and we can ship them without refrigeration and store them for long periods of time without any significant loss of nutritional value. The carbon, energy and monetary cost of shipping huge quantities of grain from the center of the US to…

Well said.

I would also argue that concerns over crops taking up too much land are somewhat misplaced until we reach a point where we at risk of not having enough farmland to feed the population. When we reach that point, only food that can be grown in ultra-dense (calories per acre) ways will be affordable, and other foods will be luxuries with a high premium.

Until then we are enjoying our relative luxury of plentiful land, and can enjoy luxury crops and meat for cheap.

Although this harms the environment, nobody starves to death because of this current practice- all those who currently starve to death do so because of distribution problems /abject poverty.

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