Once upon a time I participated in a conference on international farm broadcasting at FAO. It looks like the event has produced results.
FAO now has a Rural Radio website up and running with lots of content. In developing countries radio can and is playing a key role in the delivery of information. Just like it did here in the early days of our development in America.
You can download a book they published called, “The One to Watch, Radio, New ICT’s and Interactivity.” (122 pg pdf)
Since it looks like they talk about blending radio and the internet I think that makes it “international farm podcasting” time.