1. National Wheat Research Center (Embrapa Trigo), Brazilian Agricultural Research Corporation, Passo Fundo, Rio Grande do Sul, Brazil
2. Department of Soil Science, Federal University of Viçosa, Viçosa, Brazil
3. Department of Agricultural Science, Rio Paranaíba Campus, Federal University of Viçosa, Rio Paranaíba, Brazil
4. College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu, USA