Interesting and disturbing food and agriculture news

First, this thoughtful number from Senegal, on the see-saw of global price prices.

Second, a mysterious plague of worms riddles Liberia. There is still no certainty on what they are and many upcountry farmers feel frightened and abandoned - but even though the spray teams from the Ministry of Agriculture come late, at least there are spray teams.

Third, another story on middle income countries buying food through barter deals. This time last year, it was because food was too expensive. This year, food is cheap, but they can't get credit to pay for it.