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Defining a realistic control for the chloroform fumigation-incubation method using microscopic counting and 14C-substrates
Author(s):Harris, David; Horwath, William R.; Paul, Eldor A.; Horton, Kenneth A.; Jagger, Leslie; Norton, Jeannette
Date Issued:1996-11
Format:born digital; articles
Chloroform fumigation-incubation (CFI) has made possible the extensive characterization of soil microbial biomass carbon (C) (MBC). Defining the non-microbial C mineralized in soils following fumigation remains the major ...
Measurement of microbial biomass N:C by chloroform fumigation-incubation
Author(s):Harris, D.; Voroney, R. P.; Paul, Eldor A.
Date Issued:1997-11
Format:born digital; articles
We present a calculation for soil microbial biomass N:C ratio determined from a 10-d incubation following chloroform fumigation. The calculation is based on a mathematical model of the N content of the pre- and post-fumigation ...
Soil resources, microbial activity, and primary production across an agricultural ecosystem
Author(s):Ellis, Boyd G.; Crum, James R.; Paul, Eldor A.; Klug, Michael J.; Klingensmith, Katherine M.; Robertson, G. Philip
Date Issued:1997-02
Format:born digital; articles
The degree to which soil resource availability is linked to patterns of microbial activity and plant productivity within ecosystems has important consequences for our understanding of how ecosystems are structured and for ...
Estimation of slow- and fast-cycling soil organic carbon pools from 6N HCI hydrolysis
Author(s):Leavitt, S. W.; Follett, R. F.; Paul, E. A.
Date Issued:1996
Format:born digital; articles
Acid hydrolysis is used to fractionate the soil organic carbon pool into relatively slow- and fast-cycling compartments on soils from Arizona, the Great Plains states and Michigan collected for carbon isotope tracer studies ...
Analytical determination of concentric carbon gradients within stable soil aggregates = Détermination analytique de gradients concentriques de carbone au sein d’agrégats stables de sol
Author(s):Paul, Eldor A.; Smucker, Alvin J. M.
Date Issued:1998-08
Format:born digital; articles
Soil aggregation dynamics directly control agricultural production and reduce environmental contamination by convection-dispersion sequestrations of most ions. Greater containment and longer residence times of most plant ...
14C Allocation in tree–soil systems
Author(s):Paul, Eldor A.; Pregitzer, Kurt S.; Horwath, William R.
Date Issued:1994
Format:born digital; articles
We studied whole-tree C allocation with special emphasis on the quantification of C allocation to roots and root respiration. To document seasonal patterns of C allocation, 2-year-old hybrid poplar trees greater than 3 m ...
Fate of legume and fertilizer nitrogen-15 in a long-term cropping systems experiment
Author(s):Janke, Rhonda R.; Peters, Steven E.; Paul, Eldor A.; Hesterman, Oran B.; Harris, Glendon H.
Date Issued:1994-09
Format:born digital; articles
Relying more on biological N2 fixation has been suggested as a way to meet one of the major challenges of agricultural sustainability. A 15N study was conducted to compare the fate of applied legume and fertilizer N in a ...
Injection of nitrogen-15 into trees to study nitrogen cycling in soil
Author(s):Pregitzer, Kurt S.; Paul, Eldor A.; Horwath, William R.
Date Issued:1992-01
Format:born digital; articles
Most 15N dilution techniques disturb either the soil or N-pool size. The objective of this study was to develop a method of labeling the roots of Populus trees with 15N without physically disturbing the soil. Such a method ...
Carbon isotope ratios of Great Plains soils and in wheat-fallow systems
Author(s):Peterson, G. A.; Lyon, D.; Halvorson, A. D.; Leavitt, S. W.; Paul, Eldor A.; Follett, R. F.
Date Issued:1997-07
Format:born digital; articles
The purposes of this study were to improve knowledge of regional vegetation patterns of C3 and C4 plants in the North American Great Plains and to use δ13C methodology and long-term research sites to determine contributions ...
Terrestrial carbon pools: preliminary data from the Corn Belt and Great Plains regions
Author(s):Hickman, Michael V.; Turco, Ronald F.; Huggins, David R.; Halvorson, Ardell D.; Lyon, Drew J.; Frye, Wilbur W.; Blevins, Robert L.; Cole, C. Vernon; Paul, Eldor A.; Collins, Harold P.; Paustian, Keith H.; Frey, Serita D.; Monz, Christopher A.; Elliott, Edward T.; Burke, Ingrid C.
Date Issued:1994
Format:born digital; articles
Soil organic matter is recognized as an important component of soil quality (Granatstein & Bezdicek, 1992; Arshad & Coen, 1992). In mineral soils, many properties associated with soil quality, including nutrient mineralization, ...