The effect of land use on the availability of soil nitrogen (N) was studied by separating total soil N into one labile and one stable fraction by oxidation and extraction of labile N with potassium permanganate. The nitrogen management index (NMI) was calculated according to Blair et al. (1995) f...
Westerhof, R
,
Vilela, L
,
Ayarza, Miguel Angel
,
Zech, W.
,
[Labile N and the nitrogen management index of oxisols in the Brazilian cerrados]
,
Labile N and the nitrogen management index of oxisols in the Brazilian cerrados
The permanganate oxidation procedure is easily performed and may help monitor large areas for their soil organic matter (SOM) quality and nitrogen (N) availability. Knowledge of the chemical characteristics of fractions that are lost or remain after oxidation will help explain results obtained by...
Westerhof, R
,
Vilela, L
,
Ayarza, Miguel Angel
,
Zech, W.
,
[Characterization labile and stable nitrogen]
,
Characterization labile and stable nitrogen
Soil organic matter quality is usually seen as a major attribute of soil quality. In this study, we extracted organic carbon with water (WEOC) or with potassium permanganate (PEOC). We assessed these extractions for their potential as sensitive indicators of the effect of land use on two importan...
Westerhof, R
,
Vilela, L
,
Ayarza, Miguel Angel
,
Zech, W.
,
[Carbon fractions as sensitive indicators of quality of soil organic matter]
,
Carbon fractions as sensitive indicators of quality of soil organic matter