IS THIS THE WAY TO FEED THE WORLD?

In warmer climates the green houses are not nesseccary and solar power  is used  for pumps and fans

 

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Growing with out soil, not easy to set up on an allotment site or at home, but commercially it has endless possibilities. No worry about soil condition, by stacking certain plants less space is needed, about one tenth of the water  used normally on crops is needed, the same solution can be used for weeks, the nutrient levels are monitored daily and only topped up when needed this prevents salinity of the water caused by the salts that are in the fertilisers . This reduces the amount of fertilisers needed and it cannot leach into the soil. The plants are grown in containers with just the roots in the water, the plant it’s self is anchored in either coir or Rockwool. Growth is rapid due to ideal growing conditions plus the extra oxygen in the water that’s being pumped round continuously , lettuce and cucumbers can be ready in just 42 days. Australia have huge set ups that run like conveyor belts  new plants feed on one end and mature plants off the other end daily Pakistan have started a hydroponics scheme and Africa is next. Not cheap to set up at the moment, but neither are war machine and hydroponics are a lot more benificial

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8 Responses

  1. gertie says:

    This, plus everyone growing some of their own … way to go perhaps :good: :rose:
    Have noticed already, that salad cress grown on the white papery stuff is much easier to clean and use too, than on the old earthy base. :good:

  2. dandlyon says:

    Hi Dix looks a bit of a Heath Robinson job, right on my door step Growell Hydroponics , it was their technical adviser that gave the talk I listened to. You must have an eec meter in the system and because of the conditions you need to check for salmonella in the water, no mention of this in homehydrosystems

  3. Beanstew says:

    This is certainly an idea whose time has come – in many ways. But it seems to me that commercial growers of this method are largely growing “quick stuff” with a quick turnover like salad leaves and herbs – and with the best will in the world, will it ever be used to provide the bulk of our nutritional needs? But I do think that it will become more important, given the loss of agricultural land, the denatured state of a lot of productive land, agrobusiness and monocultures, and climate change.
    http://ag.arizona.edu/ceac/sites/ag.arizona.edu.ceac/files/Merle%20overview.pdf
    http://modernfarmer.com/2013/06/dirt-free-farming-will-hydroponics-finally-take-off/

  4. dandlyon says:

    At the moment its quick things as you say, at least the potential is there, it seems almost anything can be grown this way. This was one of the most interesting talks we have had at the gardening club. The effect oxygen has on the plants impressed me and will definitely keep the hoe going round my plants next year and attempt to get more oxygen into the water I use

  5. Beanstew says:

    I wonder if the range of crops grown by this method will be limited financially by the need for quick returns to repay the financial investment which is considerable? Can you ever see it being used to provide crops like some of the broccolis with a long maturation and needing more space in the system?

  6. dandlyon says:

    I agree Shelia it may be just a pipe dream, and if the world is ever forced to adopt these methods its good to know they are there and with more development they may become more affordable Love the cartoons that go with the one link :lol:

  7. VegVamp says:

    Missed this earlier Tony, a very interesting read and yes good to know it is possible. Can’t help feeling that if a quarter of the money they send on armies and wars were spent on this then we could feed everyone.

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