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In pictures: Ethiopian herder
Need for land

One of the reasons more people have started to farm is that there is less land for grazing, partly because of a plant called prosopis.

We call it Dergi hara, because it was brought from Mexico during the socialist Derg era in the 70s.

It was used to bring soil stability to very dry areas, but has spread out of control and is very thorny and dense, and means we can't graze where it grows.

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