even here, in the state of central equatoria, one of the most fertile patches of land in south sudan, farmers lack sufficient machinery and labour. it means they cannot produce enough food for the local population and growing influx of people fleeing conflict areas. >> the major problem is that we have no access to tractors. we have enough land, and we could hire a tractor, we could easily expand. >> the yei agricultural training center, a norwegian-funded local ngo, is trying to increase agricultural productivity by teaching farmers new techniques. for the centre's principal, coffee farming is an unnecessary distraction. >> the priority of the private sector is to fulfill the needs of the local market. that means that the next step is to go for cash crops to be imported to the outside countries or international, for example crops like coffee, crops like tobacco, but otherwise the priority is enough food for the local population. >> but with the onset of the conflict, private investments have dried up. ngos are focused on humanitarian rather than development projects. and the governme