Hi there!
Yes, we are growing in Panama. In total this year we have planted about 70 acres (or about 30 ha) with different cassava varieties, both bitter and 'sweet'. Indeed we need to distinguish between bitter and sweet varieties, but the line between them is not that clear (at least not to me
. We see the difference between sweet and bitter determined by the level of starch, not the level of cyanid. We have a couple of hybrid varieties, which are 'sweet' in the first 10 months but become bitter afterwards. THe % of starch mainly determines the bitternes. That said, I am sure that there are certain varieties with high cyanid%, more than others, independent from the starch %. Will look a bit more into this subject. Thanks! Frans