1585
Can't enjoy anything out here (discuss.online)
submitted 5 months ago by to c/microblogmemes@lemmy.world
120 comments fedilink hide all child comments
 
you are viewing a single comment's thread
view the rest of the comments
[+] -14 points 5 months ago (6 children)

I'm just replying to the comment above mine that says rice is not hurting the climate. That's simply factually wrong. I'm also comparing rice to other grains, not rice to growing nothing at all. We could improve the climate impact of agriculture by switching to other carbs that are just as productive while having a lesser environmental impact, such as Maize and potatoes. However I don't think we should actually do that as some people eat rice for cultural reasons and the impact rice has, as many have pointed out, is dwarfed by animal agriculture. So switching away from rice while still eating beef would feel a bit hypocritical. However it's still true that rice is far from the most environmentally friendly carb source.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 6 child comments
    •
  • [–] 32 points 5 months ago (4 children)

    And I replied telling you you were wrong.

    Rice is one of the most environmentally friendly carb sources, and in its native environments is an essential plant. Corn takes up more space and the production and refining creates more CO2 than rice. Potatoes are much more vulnerable to rot and much more likely to fail, not to mention the much higher fertilizer requirements.

    Climate change is not one thing. Methane isn't the enemy. Hell CO2 isn't the enemy. It is taking out things out of balance. If we were to eliminate rice and just grow corn, yes, we'd drop 10% of methane production... except we wouldn't because corn requires 5x the fertilizer and fertilizer production is a larger contributor to GHG emissions than aviation and shipping.

    Corn is also horribly space inefficient outside the US. Not just outside the Americas, but outside specifically the midwest in the US. Despite it now being attempted to be grown on every continent there is no place on Earth besides the US and Canada that corn becomes more productive per hectacre than rice. It simply cannot replace rice, which is more productive on every single other continent.

    So that's 5x the fertilizer, at least 1.5x the space (up to 3x the space) which then logarithmically increase the amount of CO2 produced for transportation and production, all while destroying native ecosystems (or at least ecosystems that have adapted to rice farming over the last few thousand years), oh and we can't forget water management systems would need to change drastically so add 50 years of construction to any CO2 calcs.

    'Methane bad' is true, sure, but we can't look at one single source, which provides HALF OF ALL CALORIES CONSUMED BY HUMANS, and say that's a thing that needs to switch. If we replaced corn with rice tomorrow the world would have a net negative GHG production from where we started. The same is not true in reverse, despite rice causing a minor amount of separate methane production.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 4 child comments
    •
  • [–] 4 points 5 months ago (2 children)

    Doesn't rice grown without standing water eliminate that problem? I have no clue about which varieties one could grow like this though. Or how much of a harvest one could expect in comparison.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 3 points 5 months ago

    I don't know either, but the places where I've seen rice growing is on very steep mountainous areas where would have been jungle, and lots of rain. It's deforested to make way for rice, and there's not much else humans can use it for. So while people can comment it can be done without water, places like this I think it would be a challenge, especially when yeild is important to very poor farmers, and a huge population needs feeding.

  • permalink
  • fedilink
  • source
  • parent
  • [+] -13 points 5 months ago

    Sorry but you just produced a whole lot of bullshit. You admit that maize is more productive than rice in the US and Canada. But you never reflect more on that. The reason that listed average yields for maize is lower than for rice in most other countries has a very simple explanation. Rice is higher value per kg and if you can grow rice in a certain environment, you are very likely to do so. Maize then gets pushed to less productive land that can't support rice, either because it's too mountainous or it's too dry. However what we see is that when maize and rice are grown on the same land the maize tends to either yield similar or more than rice. A few years ago I made an agricultural study trip to Indonesia where they grew rice everywhere where rice could be grown but grew mostly maize on the rest of the land. Traditionally they used to have highland rice varieties that could be grown without irrigation but they were mostly abandoned when maize came, because it was far more productive. All animals where also fed maize because maize was cheaper to produce than rice. Even animal farmers whose grain never ended up in market, were growing maize to feed their chickens, because it yielded the most. Maize has 4C photosynthesis that's more productive than rice's 3C photosynthesis in subtropical and tropical climates.

    Now the claim you make that maize uses 5x more fertilizer I have no idea where you got that from, but I'm guessing straight out of your ass. If we are talking nitrogen it's about 22kg per ton for maize and 18kg per ton for rice. However since maize has a higher protein content the nitrogen use efficiency ends up being close to the same. And nowhere near the 5x fertiliser claim you pulled. You also briefly mention water but rice is almost universally irrigated while maize is chiefly rainfed.

  • permalink
  • fedilink
  • source
  • parent
  • [–] 8 points 5 months ago

    Carbon release from biological sources are all net neutral. Every single atom released came from the environment in the first place. Every story about grain or cows ruining the environment is propaganda to protect the real culprit in fossil fuels. Every single atom from that source is extra material that had been sequestered for millions of years. That is the only additive source we have the ability to stop.

  • permalink
  • fedilink
  • source
  • parent