open field situation in Spain, then you will, uh, end up at the end of the growing season with four kilograms per square meter. If you do this in a high tech greenhouse in the Netherlands at the moment, you will end up with 80 kilograms
for - comparison - food production - open field vs greenhouse - 4 kg / sq. meter - open field - 80 kg / sq. meter and 25% of open field water.- greenhouse