1. Department of Soils and Plant Nutrition, Federal University of Tocantins, Gurupi, Tocantins, Brazil
2. Plant Protection Department, Federal Rural University of the Amazon, Belém, Pará, Brazil
3. Department of Soils, Federal University of Lavras, Lavras, Minas Gerais, Brazil
4. Department of Soils, Federal University of Tocantins, Araguaína, Tocantins, Brazil