TY - JOUR T1 - Carbohydrates Concentration in leaves of potato plants affected by nitrogen fertilization rates JO - Revista Ceres A1 - Braun, Heder A1 - Fontes, Paulo Cezar Rezende A1 - Silva, Tania Pires da A1 - Finger, Fernando Luiz A1 - Cecon, Paulo Roberto A1 - Ferreira, Ana Paula Sato SN - 0034-737X UL - 10.1590/0034-737X201663020016 VL - 63 Y1 - 2016 PB - Brasil ER -