TY  - JOUR 
T1  - Corn and soybean yields as affected by cover crops and herbicide timing under no-tillage system
JO  - Planta Daninha
A1  - Oliveira, P.
A1  - Nascente, A.S.
A1  - Kluthcouski, J.
A1  - Castro, T.A.P.
SN  - 0100-8358
UL  - 10.1590/S0100-83582013000400020
VL  - 31 
Y1  - 2013
PB  - Brasil 
ER  -