1659-1321

S1659-13212018000300535

10.15517/ma.v29i3.28402

Costa Rica

00 12 2018

29 3 535 545

2005 59

191-201

AOAC (Association of Official Agricultural Chemists) 1984 14

AOAC (Association of Official Agricultural Chemists) 2000 17

2004 82

2200-6

2005 16

37-43

1996 16

385-400

1966 183

145-51

2005 60

129-35

2010 21

267-74

2002 28

269-81

2007 73

272-6

2015 10

2011 31

67-73

2014 151

157-63

2008 78

41-7

2013 23

157-62

1996 22

131-9

1996 33

249-61

2012

93-111

2007 25

253-9

2014 97

4444-54

2003 49

231-9

NRC (National Research Council) 1981

1992 32

337-47

2012

55-60

2016 40

11-27

2015 47

33-8

2004

2006 63

50-7

2013 35

37-41

2006 97

17-35

SAS Institute 2011

Taxonomy-Soil 2003

1993 41

171-9

1991 74

3583-97

2007 17

79-88