1. Faculty of Agriculture, Department of Soil Science and Plant Nutrition, Erciyes University, Kayseri, Turkey
2. Faculty of Engineering and Architecture, Department of Genetics and Bioengineering, Yeditepe University, Kayisdagi, Turkey
3. Faculty of Agriculture, Department of Agricultural Structures and Irrigation, Ataturk University, Erzurum, Turkey
4. Faculty of Science, Department of Biology, Ataturk University, Erzurum, Turkey
5. Faculty of Agriculture, Department of Soil Science and Plant Nutrition, Ataturk University, Erzurum, Turkey
6. Department of Soil Science, University of Wisconsin-Madison, Madison, Wisconsin, USA