Corrêa, M.F., Navroski, R., Gomes, A.D., Gazolla Neto, A., Nadal, A.P., Flores, J.H.N., Vergara, R. de O., Gadotti, G.I. e Schuch, L.O.B. 2017. Spatial variability of chemical and agronomic attributes of soil in wheat seed production field. Scientia Agraria Paranaensis. 16, 4 (dez. 2017), 500–509.