B. Bulut, S. Uranbey, H. A. A. Ahmed, M. Çali_kan
1 Cankiri Karatekin University. Institute of Science Forestry Engineering Çank1r1/Turkey
2 Ankara University, Agriculture Faculty, Department of Field Crops, 06100 Ankara/Turkey
3 U_ak UniversityFa, culty of Agriculture and Natural Sciences Department of Field Crops, 64200 U_ak/Turkey
4 Central Research Institute for Field Cronps, Ministry of Food, Agriculture and Livestock, Ankara, Turkey