ISSN:
1573-5036
Keywords:
137Cs activity
;
Erosion
;
Inorganic P
;
Organic P fractionation
;
Soil texture
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary The objective of this study was to evaluate the changes in soil phosphorus (P) forms and potential availability that occurred in a grassland soil when it was cultivated and cropped to winter wheat (Triticum aestivum L.) in a crop-fallow rotation using three tillage systems: no-till, stubble mulch, and plow (bare fallow). The experiment was located in western Nebraska on a Duroc loam (fine silty, mixed, mesic Pachic Haplustolls). After 14 years, significant differences had developed in the form of soil P as determined by a sequential fractionation procedures between the original control (grass-sod) and the bare fallow treatments. Most of the differences were associated with increases in sand content caused by erosion, accompanied on the bare fallow plots by a mixing of sand from lower horizons throughout the surface 0–15 cm.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02370935
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