Good point. Not sure if it would work at that small a scale. You might have to look around more (on and off the Net); it could help. Some searching through organic gardening sites, Rodale Press mags/sites, permaculture sites, etc., may help.
Vaguely remember seeing some such points mentioned (about companion planting, plant-plant symbiosis examples for gardening, etc.) a while ago, but did not save those particular ones, unfortunately, although I do often save web pages of interest to my PC.
Just remembered / thought of another point: Just because beans and corn may not work at your small scale (tiny pots), does not mean that nitrogen fixation may not work at all (or other forms of symbiosis). I remember reading somewhere that there are many plants and trees in the legume family ( Fabaceae (or Leguminosae)) [1], and they range from small herbs to trees. So some googling for small leguminous plants may help. For example, clover (which can be small) is probably a legume. Also, a person I know - and who has a background in farming - once told me that there are many wild species that are legumes, and one way (not guaranteed to work always) to detect them, is that they have trifoliate leaves.
Just googled:
legumes have trifoliate leaves
and it seems to indicate that what he said is partly right, at least.
Vaguely remember seeing some such points mentioned (about companion planting, plant-plant symbiosis examples for gardening, etc.) a while ago, but did not save those particular ones, unfortunately, although I do often save web pages of interest to my PC.
Just remembered / thought of another point: Just because beans and corn may not work at your small scale (tiny pots), does not mean that nitrogen fixation may not work at all (or other forms of symbiosis). I remember reading somewhere that there are many plants and trees in the legume family ( Fabaceae (or Leguminosae)) [1], and they range from small herbs to trees. So some googling for small leguminous plants may help. For example, clover (which can be small) is probably a legume. Also, a person I know - and who has a background in farming - once told me that there are many wild species that are legumes, and one way (not guaranteed to work always) to detect them, is that they have trifoliate leaves.
Just googled:
and it seems to indicate that what he said is partly right, at least.[1] https://en.wikipedia.org/wiki/Legume