Chemical | ||||||||
---|---|---|---|---|---|---|---|---|
Treatment | Al – exchangeable (titrimetry) | Ca (atomic absorption) | H + Al - Acidity (titrimetry) | K (flame photometer) | Organic matter (OM) (Walkley & Black) | Mg (atomic absorption) | pH in water | P (Mehlich1 - spectrophotometry) |
me/100 cc | me/100 cc | me/100 cc | mg/L | % | me/100 cc | pH | mg/L | |
NT | 0.007 B | 2.847 A | 5.745 B | 46.667 A | 3.209 AB | 0.978 A | 5.670 A | 26.563 A |
CT | 0.014 B | 1.545 B | 4.717 C | 30.000 B | 2.751 B | 0.556 B | 5.647 A | 10.417 B |
Native | 0.682 A | 0.093 C | 8.432 A | 44.667 A | 3.667 A | 0.142 C | 4.687 B | 0.180 C |
p | 0.0000 | 0.000 | 0.0003 | 0.0118 | 0.0262 | 0.0001 | 0.0001 | 0.0008 |
CV% | 12.68 | 9.39 | 4.94 | 9.61 | 7.68 | 9.31 | 1.20 | 22.37 |