So you need to solve the issue of electricity, internet access, education to read and write, education to read and write English, and the inapplicability of most modern hints and tips to subsistence farming that goes on in most of sub Saharan Africa, and also local crops.
In most cases, the local farmers know how to get the most out of their land, that isn't the problem - its that getting the most out of their land does fuck all for them, it won't raise them out of poverty, just like it didn't raise their parents out of poverty.
And in most of Africa, it isn't the local officials which stand in the way of these sort of things, its the locals themselves - I have extensive experience of Uganda, Namibia, Botswana and other countries, and in pretty much all cases its the locals which reject real means of raising themselves out of poverty because they haven't changed their mind set about what is important. One of our friends is a qualified nurse, and all of his siblings have been through similar education, while his father cannot read or write, cannot speak English, and still lives in a mountain village with no running water, no electricity, and a several hour drive to a tarmac road. So how did he do it? He sold his land. Was it easy? No, the rest of the villagers derided him for selling his ancestral land and no one would buy the land off him for three years. But now he has seven educated children, and a comfortable retirement ahead of him, while he has already outlasted Ugandas average life expectancy...
In another case, my wife treated a man who had been put through university - be came to the hospital with a growth. Except he came far too late - he had had the local village "doctor" treat it for years, only coming when it started bleeding. Cancer, spread to the bone - he died later that night. Wasted money.
Its not technology, education, medicine, or farming hints and tips that is needed, its a fucking huge epiphany by the locals.