Healthy soil is the hidden ingredient

(nature.com)

86 points | by gnabgib 3 days ago

6 comments

  • tbrownaw 2 hours ago
    > project to assess soil erosion and degradation in vineyards using geographical mapping systems and artificial intelligence (AI). ... AI helps me to design and polish the software codes that I use

    Is this describing use of something like GitHub copilot?

  • bgnn 29 minutes ago
    I started my gardening adventure with vegetables in pots. It was perfect, plants gave amazing yield, but required too detailed care and attention every day (or sometimes 2-3 times a day in a hot dry summer day). When I have moved to planting in soil I was shocked how worse the plants are doing. Same tomatoes giving 10-15 kg per plant yield in pots were under 3kg in soil. They got more disease issues, more pests (slugs and snails!).

    After talking to fellow natural hobby farmers I realized the soil quality was garbage (lack of earth worms and insects), and there were severe drainage and water holding issues: weirdly the soil didn't hold water but it drained way too slow too. So, ehen it rained it was swamped for days but when it got dry none of that water stayed at the top 1 meters of the soil. I'm lucky to find amazing help from local natural farmers, so I got natural green compost (no animal products/byproducts). I have been introduced to no-dig farming too. So first year I started by applying 20cm thick compost on top soil, after putting a layer of old paper boxes against weeds. Then planted my seedlings on these, with worm poop and for some phosphate loving plants bat guano as fertilizers around the plants, topping of with hemp mulch and cacao shell mulch as topping. When this soil has sunken enough, topped off with 2-3 cm compost and mulched again. I have sprinkled insect friendly flowers to attract insects too. This was an amazing succes with not only plants flourishing, fighting diseases much better and resulting in an amazing yield. I didn't need to water as often as before (4x less frequent than before in the soil, 8x less frequent than in the pot). After year 3 I stopped all fertilization and introduced cover crops that could be used as mulch and fertilizer at the same time.

    This process though is not linear. I still have plants which are not successful at all. I can grow juicy tasty watermelons in a northern European country but no parsnips or carrots or cauliflowers yet. This is what I love though, I'm interacting with a living microbiome rather than executing lab experiments. Failures are keeping it interesting and improving learning.

    • MortyWaves 25 minutes ago
      That was a great read. This is what I hope to achieve too. I know what you mean about some crops that won’t grow at all, for me, it’s carrots. They are never more than a couple of centimetres long. Deeply frustrating. I’ve tried lots, including making the soil loose, making it compact, adding sand, etc.

      Also Aloe Vera, absolutely the most frustrating house plants I’ve ever had.

      • thatcat 20 minutes ago
        You're probably over watering the aloe. Try growing carrots using a straw bale with soil added to a v cut in the center as a planter.
  • ralusek 2 hours ago
    I'm a gardening and landscaping enjoyer, but I am constantly confused about the bordering magical thinking surrounding dirt, among other aspects of growing things.

    If you look at hydroponics/aeroponics, plants basically need water, light, and fertilizer (N (nitrogen) P (phosphorous) K (potassium), and a few trace minerals). It can be the most synthetic process you've ever seen, and the plants will grow amazingly well.

    The other elements regarding soil health, etc, would be much better framed in another way, rather than as directly necessary for plant health. The benefits of maintaining a nice living soil is that it makes the environment self-sustaining. You could just dump synthetic fertilizer on the plant, with some soil additives to help retain the right amount of drainage/retention, and it would do completely fine. But without constant optimal inputs, the plants would die.

    If you cultivate a nice soil, such that the plants own/surrounding detritus can be broken down effectively, such that the nutrients in the natural processes can be broken down and made available to the plant, and the otherwise nonoptimal soil texture characteristics could be brought to some positive characteristics by those same processes, then you can theoretically arrive at a point that requires very few additional inputs.

    • thatcat 17 minutes ago
      There are also enzymes and secondary metabolites relevant to plant health associated with microbiome and ecological chains in healthy soil that go beyond the regenerative macronutrient cycles. If you try to grow edible fruits you'll notice flavor loss as a result of hydroponic / synthetic methods.
    • mattgrice 41 minutes ago
      Hydroponics is great at growing plants that are great at growing in hydroponics. Generally that is short-lived annuals.
    • bgnn 48 minutes ago
      I think what is forgotten is the organisms other than plants. Hydroponics is amazing for plants but not sure if you can sustain a wineyard in that fashion for long without having some kind of organism starting to cause issues. A well balanced soil doesn't only support the plants but also provides a healthy microbiome. Now, with the use of pesticides, artificial fertilizers, and tilling it's not less synthetic process than hydrophonics. Soil degradation in presence of these are so well documented and well understood that it's crazy we keep doing it.
    • memhole 1 hour ago
      Maybe it’s because I started with hydroponics. I don’t get the fascination with soil or animosity about hydroponics being unnatural. People do vastly underestimate what it takes to create a good soil mixture, though. In the end, you’re suspending nutrients in a substrate for the plants to uptake regardless of how you go about providing them.
    • cellular 1 hour ago
      I am terraforming my limestone rocky terrain using leaves.

      I believe they have trace minerals and the grub larve eat the oak leaves and poop amazing soil.

      I now have 6" of black soil with earthworms!

      This is in dry central Texas. Moisture helps microbial/fungal life. Leaves retain moisture.

      Another key ingredient is pressure/compaction of leaves.

      I have results on my YouTube channel: theRainHarvester

    • greenie_beans 2 hours ago
      sure, we can make them grow well in a lab. but a natural system is so much simpler and elegant
      • greenie_beans 1 hour ago
        and easier and time tested and resilient
        • lazide 26 minutes ago
          Uh, pretty much every farmer I ever met is going to disagree.

          Farming is hard, unpredictable (prone to disasters/famine/plagues), and prone to all sorts of problems with soil, weather, etc.

          The reason modern fertilizer and pesticides are used so widely is they make that fundamentally extremely difficult process easier and more predictable.

      • westurner 1 hour ago
        Plants absorb nitrogen and CO2 from the air and store it in their roots; plants fertilize soil.

        If you only grow plants with externally-sourced nutrients, that is neither sustainable nor permaculture.

        Though it may be more efficient to grow without soil; soil depletion isn't prevented by production processes that do not generate topsoil.

        JADAM is a system developed by a chemicals engineer given what is observed to work in JNF/KNF. https://news.ycombinator.com/item?id=38527264

        Where do soil amendments come from, and what would deplete those stocks (with consideration for soil depletion)?

        (Also, there are extremely efficient ammonia/nitrogen fertilizer generators, but still then the algae due to runoff problem. FWIU we should we asks ng farmers to Please produce granulated fertilizer instead of liquid.)

        The new biofuel subsidies require no-till farming practices; which other countries are further along at implementing (in or to prevent or reverse soil depletion).

        Tilling turns topsoil to dirt due to loss of moisture, oxidation, and solar radiation.

        • bgnn 27 minutes ago
          tilling with anything more than human power should be banned!
    • hackernewds 47 minutes ago
      hydroponics raised vegetables taste like bland slop. if you're an actual food enjoyer anyone can easily notice this
  • bethekidyouwant 3 hours ago
    they paywall right before they say anything of note I imagine this is climbing to the top because people like the idea of healthy soil. My very small organic no till garden is lots of manual labour. when one person grows food for 1 million I laugh to see a picture of someone standing in a field with a shovel ‘fixing soil’
    • bgnn 23 minutes ago
      Well, I don't know about a million, but there are small scale profitable commercial farms doing this. One local farm I get my seasonal veggies from had 200 tonne carrot and parsnip over-production this year due to favorable conditions and they are tiny: https://www.noshitfood.nl/ [unfortunately only in Dutch]
    • zeristor 2 hours ago
    • righthand 2 hours ago
      People don’t stand in a field fixing soil one shovel at a time. They’re fixing soil with larger machinery and taking samples to research the soils fixes.
      • bethekidyouwant 2 hours ago
        Sure, but in this article, they talk about traditional methods of soil management. There’s nothing about stopping erosion or implementing no till on an industrial scale.
  • SwayamDas 2 hours ago
    Here are the primary components that you would require - 1. Organic Matter: Compost and mulch enrich soil and improve structure. 2. Microorganisms: Bacteria, fungi, and mycorrhizae break down organic matter and enhance nutrient uptake. 3. Soil Fauna: Earthworms, insects, and arachnids aerate soil and mix organic matter. 4. Nutrients: Macronutrients (N, P, K) and micronutrients (Fe, Mn, Zn, etc.) are essential for plant growth. 5. Soil Structure: Aggregates and porosity improve aeration and water retention. 6. Water Management: Proper irrigation and drainage ensure optimal soil moisture.
    • noefingway 2 hours ago
      Item 3 is important in more ways than most people realize. Last year many farmers in my area that planted soybeans early had a problem with slugs eating the sprouting beans and were forced to replant multiple times. This spring I went to a growers conference and heard a presentation by a Prof. Tooker from Penn State Ag about the slug problem, which he has been researching for several years. Turns out that the slug infestation can be directly traced to the use of insecticides used in seed treatments. The insecticides kill beetles (and other beneficial insects) that eat the slugs but don't kill slugs because they aren't insects (they are mollusks). No beetles more slugs. Take away is don't use treated seed. However, standard practice at seed companies is to treat seed with fungicides and insecticides, thus creating a problem rather than solving it.
      • cameron_b 1 hour ago
        The attempt is surely to solve for an abundance of beetles, but it is often helpful to think of many of these 'problems' as imbalances.

        Nature does not work in two-variable equations, and the abundance or absence of an element typically has repercussions that are difficult to study.

        An often-cited example of missing the bigger picture in controlling one variable would be the Chinese campaign against the Four Pests - https://en.wikipedia.org/wiki/Four_Pests_campaign

      • vaylian 24 minutes ago
        When I think about insects and slugs, then slugs are typically considerably larger and have more body mass. Is it only the smaller slugs or slug eggs that the insects eat? I have a hard time imagining a beetle eating a slug.
      • behringer 1 hour ago
        We just need to add a mollusk treatment!
        • zeristor 1 hour ago
          The beetles are the mollusc treatment.
          • genter 3 minutes ago
            OP is making a joke: the solution to too many pesticides is even more pesticides.
        • fsckboy 1 hour ago
          copper kills invertebrates (it's in a range of fishtank infection treatments, doesn't kill fish but will kill snails and crabs)
    • cscheid 1 hour ago
      Please - if I wanted to know what an LLM thinks about this, I would have asked it myself.
      • malfist 57 minutes ago
        I was just coming to comment the same thing. This seems like an ai bot answer. And it's a green username
    • tastyfreeze 1 hour ago
      2 provides 4 from the insitu minerals. It may be necessary to add minerals if you are growing plants that require something the native minerals dont have. But, the majority of minerals plants need are available everywhere. The soil biology is required to unlock it for plants to use.

      If you see the macrobiota in soil it is an indicator microbiota is present. The more the merrier.

  • zeristor 2 hours ago
    There’s not that much in the article, it’s more of a setting the case.

    Mention is made of “using AI” and other data sources, and that’s what I’d like to read far more about.

    I wonder if the new future is writing MCPs so agents can access the data.