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Table 2 Soil chemical proprieties at the 0–10 cm layer in an Oxisol under native vegetation of Cerrado (Native) or cropped with soybean/corn under no-tillage (NT) or conventional tillage (CT) systems

From: Shifts in taxonomic and functional microbial diversity with agriculture: How fragile is the Brazilian Cerrado?

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
  1. Values in columns sharing the same letter do not differ significantly (p < 0.05) as determined by the Tukey’s test