0187-5779 0187-5779 S0187-57792012000100081 Brazil Brazil Brazil 00 03 2012 00 03 2012 30 1 81 87

1992 16 69-74 1982 10 57-61 1994 29 1303-12 2006 30 554-61 Empresa Brasileira de Pesquisa Agropecuaria 1985 2005 40 397-403 1999 29 7-30 1998 27 848-56 2005 27 83-9 1991 1-43 1985 8 227-37 2002 59 155-9 1989 1995 1996 2000 30 43-8 2003 60 125-31 1998 27 1069-75 2005 62 71-8 2006 22 9-19 1991 137-85 1997 263-73 1980