@article{(Open Science Index):https://publications.waset.org/pdf/5273, title = {Assessing drought Vulnerability of Bulgarian Agriculture through Model Simulations}, author = {Z. Popova and L. S. Pereira and М. Ivanova and P. Alexandrova and K. Doneva and V. Alexandrov and M. Kercheva}, country = {}, institution = {}, abstract = {This study assesses the vulnerability of Bulgarian agriculture to drought using the WINISAREG model and seasonal standard precipitation index SPI(2) for the period 1951-2004. This model was previously validated for maize on soils of different water holding capacity (TAW) in various locations. Simulations are performed for Plovdiv, Stara Zagora and Sofia. Results relative to Plovdiv show that in soils of large TAW (180 mm m-1) net irrigation requirements (NIRs) range 0-40 mm in wet years and 350-380 mm in dry years. In soils of small TAW (116 mm m-1), NIRs reach 440 mm in the very dry year. NIRs in Sofia are about 80 mm smaller. Rainfed maize is associated with great yield variability (29%}, journal = {International Journal of Agricultural and Biosystems Engineering}, volume = {5}, number = {11}, year = {2011}, pages = {760 - 773}, ee = {https://publications.waset.org/pdf/5273}, url = {https://publications.waset.org/vol/59}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 59, 2011}, }