TY  - JOUR 
T1  - Critical ranges for leaf nitrogen and potassium levels in coffee fertigated at the production phase<sup>1</sup>
JO  - Revista Ciência Agronômica
A1  - Assis, Gleice Aparecida de
A1  - Guimarães, Rubens José
A1  - Colombo, Alberto
A1  - Scalco, Myriane Stella
A1  - Dominghetti, Anderson William
SN  - 1806-6690
UL  - 10.1590/S1806-66902015000100015
VL  - 46 
Y1  - 2015
PB  - Brasil 
ER  -