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Can We Grow More Food on Less Land?

nytimes.com

191–200 of 287 posts

Re: Can We Grow More Food on Less Land?

#191
post #34

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?

Plenty has been written on "the population question". Your intuitions don't agree with my understanding of the state of the art. Many environmentalists say that even the current world population can't afford Western middle-class quality of life. Efforts to limit population growth are already in place but it's mostly occurring in parts of the world too poor to do anything about it. We don't "want" higher population bu…

>Many environmentalists say that even the current world population can't afford Western middle-class quality of life.

What makes you think we (we as in those of us who see reduction as a focus on environmentalism) disagree with this? We are, indeed, already too many, meaning that we should reduce further, and further, and not just be content with our current numbers, and certainly not allow those numbers to keep growing.

The city I was born in, Montpellier, grew from 100k inhabitants in 1960 to 270k in 2018. It turned from beautiful Haussmann style architecture surrounded by crops of vines and wild countryside land to a nightmare of concrete towers, oppressive modern architecture ( https://upload.wikimedia.org/wikipedia/commons/b/b0/Pierres_... can you look at this and not feel overly disgusted?), overgrowth of suburbs around it to the point where we need to travel much further to see any wildland and a homeless problem ala san francisco that keeps getting worse and worse as we fail to build as much as necessary to fulfill the need of our constant growth and and rents and property costs keep growing beyond more and more out of reach of the average french man living there.

It is not just about CO2 emissions like what people on the left side focus on so much. It is about quality of life itself. Or lack thereof induced by letting things go on like this.

You are right, current numbers are horrendous and more than the earth could withstand if everyone had western middle class style economy, as even western countries have too much population. It isn't solely poor countries that should reduce their numbers. Encouraging people to sterilize in France would be a great thing too.

Re: Can We Grow More Food on Less Land?

#192
post #176
post #123

Earlier quoted context omitted.

Wow, that is such an anti earth practice. How can we change this type of insanity? How can we protect our own guts?

Voting with your wallet is a good start. In the EU there are strict requirements on what can be labeled ecological, including the use of the EU ecolabel. I believe the US has similar labelling. If you local supermarket doesn't have a suitable stock of ecological supplies, write to them and ask for some, or start shopping at an organic shop.

At least in Germany since 2015 desiccation with Glyphosat is strictly regulated and only allowed in rare circumstances. Not sure about EU global situation, tho.

Re: Can We Grow More Food on Less Land?

#193

Earlier quoted context omitted.

Is it possible that the soil is also depleted of interesting nutrients and that the fertilizer isn't providing them either? Our understanding of what micronutrients humans need is not great. For plants, it may be even less understood.

Depending on what you mean, either yes or no :-) This is based on my poor understanding of the situation. Someone who is knowledgeable will hopefully be able to correct me. I think there are actually plenty of nutrients in soil (even many "poor" soils). The real problem is that they aren't bio-available. So you'll have lots of different mineral salts in the soil (usually one or two orders of magnitude more than you n…

>Really you want a variety of plants pulling up nutrients out of the ground (because different varieties have different abilities to break down and convert the nutrients in the soil)

That doesn't appear to be needed. The plants don't have the ability at all, the microorganisms they attract and feed do it. You can build fertility while growing a single crop year after year, Fukuoka did rice and wheat every year for decades on the same land just fine. As long as you keep the microorganisms fed and don't insist on a program of routinely killing them, they'll break down the minerals that the plants need and make them available.

>Finally, you often want some of that happening in an anaerobic environment, so you don't bind oxygen to it.

No you don't. When it happens in an anaerobic environment you get end products that hinder plant growth instead of helping it. This is the main reason soil compaction is a problem, you get pooled water in the ground creating anaerobic conditions which kill off all the good bacteria and fungi.

Re: Can We Grow More Food on Less Land?

#194

Earlier quoted context omitted.

It is actually very easy to bring them back, but you can't go ahead and then kill them a week later and expect any benefit. Stop tilling and spraying and put down some compost and you've got your microorganisms back and the food to get them through until the first plant roots are well established to keep it going from there. The thing that is hard to bring back is the thousands of years of accumulated topsoil that we…

Either tilling or herbicides. It is not that simple to say stop tilling. No-till might become viable when we have farming robots that can deal with weeds. I think the bigger problem is moving away from crop rotation to monocultures.

Watch the video I linked. It explains how weeds thrive under bacterially dominated soils, precisely what is created by tillage and spraying. When you have a balance of bacteria and fungi, crop species out compete weeds on their own, because the environment is suited to their needs.

Re: Can We Grow More Food on Less Land?

#195
post #20

There's a great method called Agroforestry that uses forest floors to produce more food: Quick overview of a farmer's land that uses this method: https://www.youtube.com/watch?v=stABAx82TbY he harvest around 3x more cocoa per hectare than traditional methods and its one of the most valuable in the world right now. Big producers joining to make it more scalable: https://www.youtube.com/watch?v=gSPNRu4ZPvE

I’m sorry but this fails reason on even a basic level and reminds me of something a snopes fact check would be needed for. There is x amount of energy in sunlight and if it is going through leaves it is not available to your crop to grow. Same goes for the nutrients fueling all those trees etc. He is doing a great job at making a forest web but I’d like some verified figures for that cocoa production vs a real cocoa farm.

Re: Can We Grow More Food on Less Land?

#196
post #182

I recently conducted a report and presentation about reducetarianism (though in my own language). There are 3 main reasons why people go vegetarian, vegan, or reducetarian (the former 2 are a subset of reducetarianism): environment, animal welfare, and health. Re: "Can We Grow More Food on Less Land?". My conclusion to based on the research I performed is: Yeah, we can, and not only that we can also reduce the Co2 fo…

Would you care to explain what 'CNS' is?

Re: Can We Grow More Food on Less Land?

#197
post #177

Earlier quoted context omitted.

Or just pay humans?

After Brexit I can only see practices like this increasing in the UK. A lot of the farm work is done by immigrants, because natives don't want to do the work. People aren't going to pay more for food, so the wages can't go up, meaning more 'efficient' farming practices will be used.

While your examples and reasoning seems good, I don’t think it’s enough to support the conclusion.

From what I have seen, everyone who thinks there are any significant difficulties that need to be overcome is a Remainer and everyone who is a Leaver is absolutely certain that any claim of difficulty is “just project fear” — this, combined with the inherent time lag between planting and harvesting, means that what crops are around next year is entirely down to what UK farmers already believe will happen next year.

Four outcomes, for any given farm:

1. Current crops, easy access to labour: fine

2. Efficient crops, easy access to labour: fine

3. Efficient crops, no access to labour: fine

4. Current crops, no access to labour: bankruptcy

You may consider 4. to be an obvious safe bet, but when I say I think Leavers regard any talk of difficulty as total nonsense, I mean I get the impression they place it in the same mental bucket as “Satan is real and knows your online banking password”.

In outcome 4., the farms won’t be around afterwards to try it again the right way.

Given the UK is a net food importer, this is mostly separate to any question of food security, but ironically the lack of access to labour could increase unemployment.

Re: Can We Grow More Food on Less Land?

#198
post #196
post #182

I recently conducted a report and presentation about reducetarianism (though in my own language). There are 3 main reasons why people go vegetarian, vegan, or reducetarian (the former 2 are a subset of reducetarianism): environment, animal welfare, and health. Re: "Can We Grow More Food on Less Land?". My conclusion to based on the research I performed is: Yeah, we can, and not only that we can also reduce the Co2 fo…

Would you care to explain what 'CNS' is?

In this context, it stands for Central Nervous System [1]

[1] https://en.wikipedia.org/wiki/Central_nervous_system

Re: Can We Grow More Food on Less Land?

#199

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.

If enough of the global beef supply were tainted by a human-communicable disease, people might shy away from it. Could the plot of some eco-terrorist film, preferably starring Nicolas Cage. Working title: "The Meating"

Re: Can We Grow More Food on Less Land?

#200

From a recent Bloomberg article[1] The last two graphs show that 41% of the land in the contiguous 48 states is used for feeding livestock. More than 33% of the 48 states is just pasture, most of which I believe is used by cattle. What would it take to shift protein consumption from beef (3% efficient) to products like poultry (21%) and eggs (31%)? [2] I think we have to take a hard look at taxes, fees, and subsidies…

wow. those numbers are so cool. never knew poultry was so efficient. No wonder it’s so much cheaper. What would it take to make beef production more efficient? genetic engineering perhaps. People wil naturally switch to more efficient food as population goes up and food resources become more scarce.

It's not exactly surprising, is it? Besides efficiency, what would increase the price of a piece of food? (In the long run I assume supply would match demand so a mismatch there wouldn't be the cause.)

So I think the answer to your question about increasing efficiency is probably pretty difficult. There's already a huge profit motive to increase efficiency, so if a few labcoats could easily solve the problem I'm sure they would have by now. I think the answer is to eat animals who reach maturity faster (or just grow more per unit time?). Like insects :-)

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