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Full-Text Articles in Soil Science
Urban Lead In Minnesota: Soil Transect Results Of Four Cities, Howard W. Mielke, Sara Burroughs, Randall Wade, Timothy Yarrow, Paul W. Mielke
Urban Lead In Minnesota: Soil Transect Results Of Four Cities, Howard W. Mielke, Sara Burroughs, Randall Wade, Timothy Yarrow, Paul W. Mielke
Journal of the Minnesota Academy of Science
The focus of this field study was the development of a soil collection and analysis method for the rapid assessment of urban lead (Pb) buildup in four Minnesota cities, Minneapolis, St. Paul, Duluth, and Rochester. The results show that soil Pb buildup is mainly a function of urban size, although specific geographic factors, such as a bluff that constrains city development along a narrow corridor, also play a role in Pb distribution and concentration. Maximum urban Pb concentrations were approximately 25, 70, and 100 times rural soil Pb levels, in Rochester, Duluth, and the centers of Minneapolis and St. Paul …
Till Fabrics And Pedoturbations In Some Soils Of Minnesota, Gerald W. Mccormick
Till Fabrics And Pedoturbations In Some Soils Of Minnesota, Gerald W. Mccormick
Journal of the Minnesota Academy of Science
Till-fabric analyses provide an index of pedoturbation for soils formed in till. This analysis of four soils in east-central Minnesota shows that pedoturbation has had little or no effect upon the orientations of pebbles in B2 horizons and ambiguous effects in the B 1 and A2 horizons. Effects of frost action are not apparent.
Observation And Prediction Of Soil Water Under Different Types Of Vegetation, D. V. Wroblewski, D. F. Grigal
Observation And Prediction Of Soil Water Under Different Types Of Vegetation, D. V. Wroblewski, D. F. Grigal
Journal of the Minnesota Academy of Science
Soil water trends were monitored during the 1971 growing season on the Anoka Sand Plain in east-central Minnesota. Soils were sampled under four vegetation densities, ranging from old field through increasing amounts of oak overstory. There was no difference over the sampled period in total soil water content (to 100 cm) on the four sites. Differences were found in water content of individual soil horizons, and especially in the surface horizon (0 to 10 cm). A model of evapotranspiration was used to simulate the observed trends and the prediction and observations were closely correlated (r2 ~ 0 .91).
Procedure And Structure For An Instructional Laboratory Which Supplements Research, R. S. Adams Jr.
Procedure And Structure For An Instructional Laboratory Which Supplements Research, R. S. Adams Jr.
Journal of the Minnesota Academy of Science
This paper describes the organization of a laboratory course in Soil Chemical Analysis. Students select and pursue small research problems to gain experience in the soil analyses that are discussed in lecture and required in the laboratory. Involvement of the class in an actual research problem proved challenging to both the instructor and the class. The data obtained often supplemented current departmental research. Individual projects were found to be easier to supervise than team problems. This paper reports results of a team project examining parameters of a pot experiment. Shape of the pot, methods of watering, methods of fertilizing, and …