TY  - JOUR 
T1  - Effect of tillage systems and permanent groundcover intercropped with orange trees on soil enzyme activities
JO  - Brazilian Archives of Biology and Technology
A1  - Balota, Elcio Liborio
A1  - Machineski, Oswaldo
A1  - Truber, Priscila Viviane
A1  - Auler, Pedro Antonio Martins
SN  - 1516-8913
UL  - 10.1590/S1516-89132011000200001
VL  - 54 
Y1  - 2011
PB  - Brasil 
ER  -