The organic matter percentage of the soil dropped 0.002 percent at both the Clarinda and Bethany stations for each ton of soil lost by erosion. It is shown that the amount of organic matter removed by erosion is greater than the corresponding depletion indicated by analyses of the plot soils,...
Fauna is highly abundant and diverse in soils worldwide, but surprisingly little is known about how it affects soil organic matter stabilization. Here, we review how the ecological strategies of a multitude of soil faunal taxa can affect the formation and persistence of labile (particulate organic...
Organic matter status and the size, activity and metabolic diversity of the soil microflora as indicators of the success of re- habilitation of mined sand dunes. Biology and Fertility of Soils 39, 429-437.Graham, M. H. and Haynes, R. J.: Organic matter status and the size, activity ...
Soil samples were taken from a depth of 0-20 cm and the percentage of organic matter and soil texture were determined. Three kinds of organic matters (peat, farmyard manure and filter press apple) were mixed with the soils at four levels (0, 4, 8 and 12% by mass), and were ...
In the Atlantic climate, a significant negative correlation was observed for wheat, with yields being on average 75卤2 (95%CI)kgha 1 lower on soils with one percentage point more SOM ( p <0.05). For sugar beet, a significant positive correlation ( p <0.05) between SOM and crop yields ...
Amongst the most labile fractions, fulvic acid predominated, resulting in a HA/FA ratio < 1 for most land uses. The predominance of a higher percentage of fulvic acids, asReferences (35) Y. Ashagrie et al. Soil aggregation and total and particulate organic matter following conversion of ...
In terms of soil microbial carbon sources this clearly shows a high percentage of C4 labelled and thus young plant carbon as microbial carbon source in topsoils. With increasing soil depth this percentage decreases and SOM is increasingly used as microbial carbon source. Among all PLFA that were...
The reduction of soil thermal diffusivity by the presence of organic matter (Fig.1) leads to a stronger dampening of the seasonal-cycle amplitude along the soil depth, and thus cools the deeper soils during summer, thins the active layer thickness (ALT), and reduces microbial respiration of SO...
Where OM is the soil organic matter (percent) and M is a particle size parameter, which is estimated by multiplying the silt percentage (particles of 0.002 to 0.1 mm in size) by 100–% clay. The S and P parameters describe soil structure and permeability respectively. When the available or...
waste disposal, sludges, soil organic matterThe long term effet (8 years) of an anaerobic partially dried sewage sludge (10 t/ha/year or 100 t/ha/2 years in dry matter basis applica-tions) on the organic status of a sandy soil cropped to continuous maize was compared to the effect of...