1. Institute of Agricultural Policy and Market Research, Justus Liebig University Giessen, Giessen, Germany
2. Department of Agricultural Economics, Tashkent Institute of Irrigation and Agricultural Mechanization Engineers-National Research University (TIIAME-NRU), Tashkent, Uzbekistan
3. Center for International Development and Environmental Research (ZEU), Justus Liebig University Giessen, Giessen, Germany
4. Depatment of External Environment for Agriculture and Policy Analysis, Leibniz Institute of Agricultural Development in Transition Economies (IAMO), Halle (Saale), Germany