Unless my impressions above are incorrect, no need to throw the baby out with the bath water... Nil aon leigheas ar an ngra ach posadh
Sugarcane (though an efficient photosynthesizer) is still a plantation monoculture entailing soil degradation and erosion.
A 2006 study from Nomad's (home) university offers a fairly sympathetic view of potential sustainability. But I don't see how Brazil's production could be increased to levels permitting largescale exports towards the EU (or elsewhere), without taking land from the rainforest and also from food production.
Thanks for the link, I was trying to remember where that came from. Nil aon leigheas ar an ngra ach posadh