the idea of smart farming is not new! and if in the right place with a good infrastructure for support; this could make a change in how things are done, but for the most part of backward nations it is not practical or even fathomable as the degraded environment and lack of local support will make this nothing but a get rich fast scheme for the dev!
I agree... It will post great challenge for the crypto developers to incorporate transactions of modern smart farming into an cash-less society specially on regions as you have mentioned.