TY  - JOUR 
T1  - Critical values of nitrogen indices in tomato plants grown in soil and nutrient solution determined by different statistical procedures
JO  - Pesquisa Agropecuária Brasileira
A1  - Fontes, Paulo Cezar Rezende
A1  - Ronchi, Cláudio Pagotto
SN  - 0100-204X
UL  - 10.1590/S0100-204X2002001000010
VL  - 37 
Y1  - 2002
PB  - Brasil 
ER  -