what agricultural comodity, that can be grown in a greenhouse requires small land and has a low cost?

Answer 1

tomatos, bell pepper, jalapeno's, various beans, scallions, and some herbs such as thyme and basil

Answer 2

The best is algae.

Algae can be grown in a greenhouse and a whole lot can be grown in a very small area. Algae is free, and you can seal it in cheap plastic bags to keep the water and algae pure. Then you use a pump to push the water through and add nutrients. Algae doesn't need many nutrients to grow.

Okay, algae doesn't sound like it tastes very good, but some of it can be directly eaten by humans, mixed into human food, or fed to animals. Not to mention that the algae can be used to reduce carbon emissions.

I read an article in this month's Popular Science where a similar system was being designed to hook up to a coal burning power plant. The idea is to let the algae pull the CO2 out of the smoke and expel oxygen. Then if you get the right type of algae you can eat it or since it is formed of hydrocarbons you can reduce it to extract the hydrogen so you can burn it. The idea is to turn the pollution into a power green power source. The problem is finding the most efficient type of algae and circulating the water.

Answer 3

Most can be grown in a greenhouse. It just won't be enough to be worth anything!

Answer 4

erm....paddy.....thomas nickens showed it wil only cost u £1 a slet ( a square of paddy like 10m") and paddy is always useful

Answer 5

a small vegetable garden
tomatoes, some melons, onions etc...

Answer 6

tomatoes