1. Department of Crop Sciences, Institute of Agronomy, University of Natural Resources and Life Sciences Vienna (BOKU), Tulln, Austria
2. Department of Crop Sciences, Experimental Farm Groß-Enzersdorf, University of Natural Resources and Life Sciences Vienna (BOKU), Groß-Enzersdorf, Austria
3. University of Agriculture Cracow, Institute of Crop Production, Cracow, Poland