Interesting read.
http://www.bbc.co.uk/nature/18612661
http://www.bbc.co.uk/nature/18612661
Air ?........OK ! Does leaf litter count ?"The pictures reveal that the roots "sense the size of the pot" and restrict the growth of the plant."
Thats why the best grow medium is air A reason aeroponics and hydroponics yield more per square foot then conventional.
If you look at the point of a soilless media the whole point of it is to provide and anchor for the plant with great air porosity.
Just like LGHT made the example of the size of the container is the ONLY limiter in this.....
If you grew one plant in the soil, and another one in a 55 gal drum of promix hp using a hydroponic fertilizer I can tell 100% the one in the soilless 55gal drum will grow faster then in ground. The reason is air porosity. Soilless mix is expensive, the native soil is free.....
Air ?........OK ! Does leaf litter count ?
http://www.airpotgarden.com/
[background=rgb(240, 240, 240)]Air-Pot containers get the best out of all plants because they develop a remarkable root system. And vigorous roots support healthy and prolific plants.[/background]
[background=rgb(240, 240, 240)]Like many clever tools, it is actually very simple – the Air-Pot ‘air-prunes’ roots and this constant pruning prevents any root circling and promotes the growth of more and more feeder roots. It is these fine, fibrous roots which use all the available water and food very efficiently, to help develop great top growth and excellent fruit.[/background]
[background=rgb(240, 240, 240)]But good roots can only develop in healthy soil/compost - soil that is alive.
Air-Pot containers also allow more air and better drainage than in any other container, another vital element that makes Air-Pot grown plants much healthier and happier.[/background]
[background=rgb(240, 240, 240)]Roots are the foundation for all good growing.[/background]
Better not fence in your yard if you plant in the ground"Even the largest pot was not large enough not to limit growth."
This is a clear example of just because they did a "test", do not listen to a word of it It is going agains science.
??? What does this mean?
"Even the largest pot was not large enough not to limit growth."
So a 1,000 gallon tank would not be large enough???? Come on!!
Exact quote "For every plant species we looked at, pot size was the factor limiting its growth." So where is the issue?
That means that they gave the plants every single bit of nutrition they needed and only changed the pot size. It doesn't matter if they were grown in concrete. The media stayed the same, the nutrition stayed the same only the pot size changed.
But that is not how you write an article. You need a catchy title and first sentence to grab attention so that people will read the WHOLE article.