luckily we dont have that problem here
yet
if we did i'd look at growing the sugar yielding forms of sweet sorghum
they can contain cyanide but if fermented to silage its safe for animals
also its ideal for biogas
Its potential yield is lower than sugar cane but it can do so with less fertiliser and less water
Biogas has a lot of potential for reducing energy costs here as its money people dont need to earn to cook their food, plus the bioslurry from biogas units is amazing and balanced fertiliser
http://www.fao.org/3/a-i3441e.pdf
its a good way to turn waste food and purspose grown high energy but inedible crops to usable carbon negative energy and fertiliser for food crops