1405-3195 1405-3195 S1405-31952018000200231 Mexico Mexico 00 03 2018 00 03 2018 52 2 231 239

2008 26 246-55 2011 2 2005 23 83-9 2012 47 414-21 1993 118 130-4 FAOSTAT 2015 1973 24 519-70 2013 34 31-42 2002 2 2-10 2012 30 343-53 2005 444 139-58 1981 68 571-6 2001 89 23-40 2002 574 153-5 1984 Wageningen, The Netherlands 633-50 1993 118 456-63