In the context of my country, Kenya, [which is] largely reliant on agriculture, sustainable development will work only if we empower our smallholder farmers [SHFs] on better ways to farm.
One reason why there are constant food shortages even in arable areas is because our farmers still use rudimentary farming methods that can't work now, when farmlands are less and less.
Embracing simple solutions to address hunger is the way forward. For instance in western Kenya, a simple technique of applying lime to soils to lower their acidity has resulted in bumper harvests of maize.
Read More : "Rio+20: A voice from Nairobi, Kenya" http://www.guardian.co.uk/global-development/2012/jun/15/rio20-voice-nairobi-kenya