5 ms·

That's an unfair and unrealistic assumption. Industrial farming doesn't use synthetic fertilizer - the 'unsustainable' - because they lack basic accounting kno

That's an unfair and unrealistic assumption. Industrial farming doesn't use synthetic fertilizer - the 'unsustainable' - because they lack basic accounting knowledge, they do so because they can make more food for less money (or some variation thereof) over reasonable accounting lifetimes. At the risk of invoking the rational market hypothesis, if using 'sustainable' methods were cheaper over the lifetime of the non-sustainable we wouldn't be having this conversation because the sustainable methods would already be in use. edit: nor is there meaningful capital inertia behind synthetic vs. other fertilization. To not use synthetic fertilizer, today, would increase food costs today. To run out of synthetic fertilizer e.g. 150 years from now would increase food costs an equal or lesser amount. Potentially lesser as a result of increased time to develop better sustainable methods. Integrating cost over the next e.g. 250 years, it will always be cheaper (better) to use the non-sustainable resources at the time sustainable methods are most expensive (today). Externalities, like global warming aside, as they aren't relevant to the example of fertilizer I was replying to.

Retric 7y ago
It’s not quite that simple, sustainability is more than simply a binary choice between 100% synthetic vs other fertilizers. There is also a huge amount of inertia around crop types. For example subsidies play such a huge role in agriculture we are far from the economic optimal usage just a local optima under current tax law. Consider what happens if we stop ethanol subsidies while paying some farmers to keep some fields fallow. ~40 percent less corn * 96,000,000 acres is quite a bit less fertilizer. That’s not a recommendation, just a demonstration that the solution space is huge. Different subsidies and taxes can make a huge difference.
- thereisnospork 7y ago
  Sure a full treatment would require a few hundred pages, at least but I believe my point that 'not using any synthetic fertilizer because we will eventually run out of natural gas is probably inane' stands despite the relative simplicity. Subsidies or no, a farmer with x acres will still try and maximize yield (and $$$) from those acres.
  - Retric 7y ago
    While I generally agree with the thrust of your argument. Farmers maximize profit not yields, as those are rarely the same thing.
    - chicob 7y ago
      For each crop, to maximize yield is to maximize profit. In fact, those are usually the same thing. Unless some requirement must be met, like moisture, protein or sugar content (i.e. corn or barley), in which case a given yield can mean different profits. Farmers have poor leverage on produce retail prices, and depending on the soil and climate they have, the local markets and distributors, a limited range of crops is available. Once chosen, they simply maximize yield. As for permanent crops, farmers simply maximize yield.
      - Retric 7y ago
        Several methods like hydroponics are generally not cost effective even though they increase yields. More realistic examples are Center Pivot Irrigation Systems which don’t utilize all available land. https://extension.uga.edu/publications/detail.html?number=B882&title=Factors%20to%20Consider%20in%20Selecting%20a%20Farm%20Irrigation%20System https://extension.uga.edu/publications/detail.html?number=B8...
        chicob 7y ago
        Sure, but that doesn't mean increasing yield is not increasing profit for regular agricultural practice. Fringe agriculture like hydroponics becomes cost effective when having no other means of production rises produce prices just enough. And central pivot irrigation increases total production, and average yields as well, when the alternative is rainfall. Many central pivots near me have permanent crops in most of the corners, usually with drip irrigation. Also worthy of notice is not all land lots are neat squares, and some corners end up being quite small.
        Retric 7y ago

Retric 7y ago

It’s not quite that simple, sustainability is more than simply a binary choice between 100% synthetic vs other fertilizers. There is also a huge amount of inertia around crop types. For example subsidies play such a huge role in agriculture we are far from the economic optimal usage just a local optima under current tax law. Consider what happens if we stop ethanol subsidies while paying some farmers to keep some fields fallow. ~40 percent less corn * 96,000,000 acres is quite a bit less fertilizer. That’s not a recommendation, just a demonstration that the solution space is huge. Different subsidies and taxes can make a huge difference.

thereisnospork 7y ago
Sure a full treatment would require a few hundred pages, at least but I believe my point that 'not using any synthetic fertilizer because we will eventually run out of natural gas is probably inane' stands despite the relative simplicity. Subsidies or no, a farmer with x acres will still try and maximize yield (and $$$) from those acres.
- Retric 7y ago
  While I generally agree with the thrust of your argument. Farmers maximize profit not yields, as those are rarely the same thing.
  - chicob 7y ago
    For each crop, to maximize yield is to maximize profit. In fact, those are usually the same thing. Unless some requirement must be met, like moisture, protein or sugar content (i.e. corn or barley), in which case a given yield can mean different profits. Farmers have poor leverage on produce retail prices, and depending on the soil and climate they have, the local markets and distributors, a limited range of crops is available. Once chosen, they simply maximize yield. As for permanent crops, farmers simply maximize yield.
    - Retric 7y ago
      Several methods like hydroponics are generally not cost effective even though they increase yields. More realistic examples are Center Pivot Irrigation Systems which don’t utilize all available land. https://extension.uga.edu/publications/detail.html?number=B882&title=Factors%20to%20Consider%20in%20Selecting%20a%20Farm%20Irrigation%20System https://extension.uga.edu/publications/detail.html?number=B8...
      - chicob 7y ago
        Sure, but that doesn't mean increasing yield is not increasing profit for regular agricultural practice. Fringe agriculture like hydroponics becomes cost effective when having no other means of production rises produce prices just enough. And central pivot irrigation increases total production, and average yields as well, when the alternative is rainfall. Many central pivots near me have permanent crops in most of the corners, usually with drip irrigation. Also worthy of notice is not all land lots are neat squares, and some corners end up being quite small.
        Retric 7y ago