Using a threshold vector error correction model approach we find the wheat market of Russia segmented, with the primary grain export region poorly integrated into the domestic market. Results also indicate that trade costs are high, hindering spatial market efficiency of wheat markets in Russia....

This paper presents information not previously published about cereal self-sufficiency and marketable surplus among Afghan farmers, based on extensive survey work carried out in 2003 across the whole country. Year after year, even in a very good agricultural year, like 2003, most Afghan farmers...