Your source says:

> It is clear that the yield per crop varies depending on the species and variety sown. However, in the case of the chinampas, yields are between 10 to 15 tonnes/hectare. An average of 12.5 tons/ha

That's not 80 tons per hectare as you stated.

> I'm sorry but I can't take your comment more seriously than a paper published in a respected journal that has been cited 1,099 times

You took the quote out of context, it's about rice agriculture in South East Asia, not Xochimilco. I check the citations and you obviously didn’t.

You are blatantly making things up here and trying to back your bullshit claims with papers that you are misrepresenting.