"by working for a company/nonprofit that is assisting African nations with improving their agriculture?"
Haha, this is my end-goal. If I get the degree, it will be a means towards this end. So if I already had such experience, I wouldn't waste my time and money at school. That said I am working on building my personal experience that can serve as an technical "intro to agriculture" - it started small, simply learning to ID plants, keep a garden, and shovel compost. I now work at a nursery and I have volunteered with an urban gleaning project as an intern for a year and a half (want an orange?). Next year I'm going to go to school for a semester to get a technical certificate in horticulture, and in the meantime I have been and will continue to take online classes and read textbooks about botany, agronomy, smallholding, food systems, and the like. So I'm getting there. I'm just being realistic - when I look at job postings id like to fill one day, most seem to strongly desire or require a technical degree (sometimes an advanced degree) in an ag related field. I will try to get into the field without the degree, so that if I don't need to get it I won't have to. But if necessary I will get the degree(s) necessary to make it happen. I figured I should at least have tbe bones of a plan for that contingency. Either way, this is my life's work. Time and money are no object, because this is my top priority.
Thanks for the help everyone, I have a much better idea of how to proceed.