Table 6.
Nutrient | TN specimens | TP specimens | *Reference | |||
---|---|---|---|---|---|---|
LL | UL | LL | UL | LL | UL | |
g kg−1 | ||||||
N | 41.0 | 54.2 | 33.3 | 51.9 | 40 | 60 |
P | 3.47 | 4.59 | 2.62 | 4.09 | 4 | 8 |
K | 22.4 | 29.8 | 18.1 | 29.0 | 30 | 50 |
Ca | 26.6 | 37.1 | 14.6 | 25.4 | 14 | 40 |
Mg | 5.12 | 6.85 | 4.75 | 7.60 | 4 | 8 |
S | 5.82 | 7.96 | 3.99 | 6.09 | 3 | 10 |
xD | 869 | 887 | 884 | 915 | − | − |
mg kg−1 | ||||||
B | 28.5 | 39.9 | 23.3 | 41.2 | 30 | 100 |
Cu | 67.3 | 102 | 98.0 | 216 | 5 | 15 |
Fe | 221 | 306 | 203 | 414 | 100 | 300 |
Mn | 119 | 182 | 118 | 270 | 50 | 250 |
Zn | 80.7 | 124 | 49.9 | 114 | 30 | 100 |
LL, UL: lower and upper limits, respectively.
Current nutrient concentration standards in Brazil (Trani et al., 1997).