Soil hydraulic properties: a simple and practical approach to estimate the number of samples - Salemi, Luiz Felippe; Fernandes, Rafael Pires; Silva, Robson Willians da Costa; Garcia, Lara Gabrielle; Moraes, Jorge Marcos de; Groppo, Juliano Daniel; Martinelli, Luiz Antonio (Eurasian Journal of Soil Science, 2020)