TY  - SER
AU  - Souza,J.I.
AU  - Silva,A.A.P.
AU  - Chagas,R.R.
AU  - Oliveira Neto,A.M.
AU  - Maciel,C.D.G.
AU  - Resende,J.T.V.
AU  - Ono,E.O.
TI  - Weed interference periods and transplanting densities of onion crop in the brazilian region of Guarapuava, PR
KW  - CEBOLA
KW  - COMPETIÇÃO DE VARIEDADE
KW  - ERVA DANINHA
ER  -