0187-5779 0187-5779 S0187-57792011000400441 Mexico 00 12 2011 00 12 2011 29 4 441 448

2004 2010 34 59-73 2003 86 15-20 ASAE (American Society of Agricultural Engineers) 1991 2005 301-54 2005 2003 2009 69 60-70 2004 21 86-92 2005 36 1573-81 2005 42 1116-32 1977 2001 21 367-83 1995 Almería, España 1992 1995 172 45-54 1982 1973 24 519-70 2004 40 161-7 1998 38 59-68 2003 89 297-305 2005 78 25-38 2006 12 183-8 2006 24 177-82 2009 3 113-21 2005 65 26-34 2001 2009 15 245-50 2007 7 833-40 2007 3 260-8 2008 16 125-31 2004 22 178-81 2007 31 275-85 SAS/STAT 1998 1984 The Netherlands 2000 UN-WWDR (The United Nations World Water Development Report) 2006 Western Seed 2005