Roland Bunch, a researcher and activist for Food First, published a report focused on fact that in Sub-Saharan Africa smallholder farmer’s lands have gotten smaller on average due to population increase and growing amounts of wasteland. This decrease in the size of farms has resulted in the decline of the practice of letting a large portion of such land lie fallow for years at a time, while farmers are able to feed themselves and their families with the rest of it. Without letting their lands have a rest, Bunch says, the soil quality which has held steady for some 3000 years is now declining from overuse.
In his report, Green Manure Crops in Africa: A Report from the Field, Bunch detailed his agroecological approach to educating smallholder farmers about the use of green manure, also known as cover crops(GM/CC), which can be grown in tandem with the farmer’s regular crops. Bunch found that the right green manure/cover crop for the specific region can return nutrients to the soil while growing usable foods for local communities.
Bunch has been investigating the use of planting crops that can fertilize the soil since the early eighties. Working with an independent group of agronomists from Brazil, he has led an effort to put these methods on the agendas of prominent development agencies. He was also very important to the introduction of the campesino a campesino(farmer to farmer) movement in Central and Southern America; cover crops were a central part of that movement.