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Background:
Education
B.S. in Soil Science,
University of Minnesota, Saint Paul, MN, 1984,
http://www.soils.umn.edu/directory.php
M.S. in Agronomy (Soil
Physics/Management), South Dakota State University, Brookings, SD, 1986,
http://plantsci.sdstate.edu/
Ph.D.
in Agronomy (Soil Biochemistry/Chemistry), South Dakota State University,
Brookings, SD, 1992,
http://plantsci.sdstate.edu/
2002-present, Soil Scientist, USDA-ARS, Pendleton OR
1997-2002, Research Associate, University of Minnesota, St. Paul, MN
1994- 1997, Post-doc. Research Associate, University of Minnesota, St.
Paul, MN
1985-1992, Graduate
Research Assistant, South Dakota State University, Brookings, SD
Soil Science Society of America,
SSSA
American Society of Agronomy, ASA
Soil and Water Conservation Society, SWCS
Center for Natural
Organic Matter Research
International Humic Substances
Society, IHSS
Sigma Xi, The
Scientific Research Society
Research Interests:
My research focuses on impact of farming systems
on soil chemical and physical properties, biogeochemical processes that
influence carbon storage and nutrient cycling, and interactions within the
soil-water-plant-air continuum, using process based models for studying.
Current Research
Projects:
Objective:
Identify pathways of water infiltration into soil and factors producing
high infiltration rates. Produce guidelines for high infiltration
capacity. Evaluate functional and taxonomic diversity of soil
microorganisms. Delineate soil organic matter components and their
relationship to soil quality. Develop a soil carbon model capable of using
readily available data to predict the storage or loss of soil carbon in
relation to management practice.
Approach:
Changes in soil fauna, carbon accumulation, porosity characteristics,
compaction, aggregation, and microbial activity will be investigated for
their role in water infiltration into tilled and untilled cropping
systems. Dye tracing and other techniques will be developed to identify
actual infiltration routes. Climax communities of soil microorganisms in
long-term agroecosystems will be identified using physiological and
biochemical methods. The population dynamics of selected taxa will be
determined and the activity of important microbial groups will be
measured. Carbon and nitrogen transformations in selected management
systems will be evaluated by standard analytical methods. Soil organic
matter pools will be investigated and their relationship to soil quality
evaluated. A mathematical model, in Windows format, for carbon
sequestration in agricultural soils will be developed. The model will be
based on observations from local long-term experiments and will be
validated using long-term data from sites across the USA.
Objective:
1. Quantify soil erosion, hydrology, and crop yield of two systems: a
winter wheat/fallow inversion tillage system and a no-till four-year
rotation, to evaluate the systems on a landscape basis and provide
databases for soil erosion model validation and decision support tool
development.
2. Determine the
effects of quality of carbon on soil aggregate stability; that in turn
influences surface soil hydrology, soil erosion, and crop production.
3. Improve the
economic viability of conservation farming systems by developing and
evaluating new, innovative technologies for harvesting that properly sizes
crop residue for optimum no-till drill performance and adds value by
segregating grain by quality; and for applying cropping inputs in
accordance with spatial variability in soils and landscapes to improve
grain yields and grain quality.
Approach:
A combination of plots and watershed-scale research will be used to test
working hypotheses within each of the sub-objectives. Development and
testing of a new crop rotation will be conducted using paired watersheds
and small plots to examine the effectiveness of soil and water
conservation, changes in the soil properties, and cropping system
productivity. Soil aggregate stability influences infiltration and water
retention. The influence of aggregate stability on infiltration and water
retention will be determined within the watershed research site at
specified landscape positions. Economic and efficiency improvements to
conservation farming systems will be made through the development of new
crop residue management and harvest technologies, and precision
conservation practices that overcome the inherent constraints imposed by
spatial variability in soil/crop productivity within farm fields. These
improvements will be accomplished through the use of engineering
procedures, plot research, and integration of geospatial information and
analysis technologies.
Selected
Publications:
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Tillage and Nitrogen Fertilizer Influences on Carbon and Soluble Silica
Relations - (22-May-05)
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Incorporated Source Carbon and Nitrogen Fertilizer Influence on
Sequestered Carbon and Soluble Silica in a Pacific Northwest Mollisol
Gollany, H.T., Allmaras, R.R., Albrecht, S.L., Copeland, S.M., Douglas, Jr,
C.L. 2005. Incorporated source carbon and nitrogen fertilizer influence on
sequestered carbon and soluble silica in a Pacific Northwest mollisol.
Third USDA Symposium on Greenhouse Gas Emissions and Carbon Sequestration
in Agriculture and Forestry. 21-24 March, 2005. p. 107.
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Predicting Carbon Sequestration in Agricultural Soils with the Carbon
Balance Model 'cqestr'
Rickman, R.W., Gollany, H.T., Albrecht, S.L., Wilhelm, W.W., Follett, R.F.,
Douglas, Jr., C.L. 2005. Predicting carbon sequestration in agricultural
soils with the carbon balance model 'CQESTR'. Third UDSA Symposium on
Greenhouse Gases and Carbon Sequestration in Agriculture and Forestry.
21-24 March, 2005. p. 108.
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Tillage and Nitrogen Fertilizer Influence on Carbon and Silica
Distribution in a Mollisol of the Pacific Northwest
Gollany, H.T., Allmaras, R.R., Copeland, S.M., Albrecht, S.L., Douglas,
C.L. 2005. Tillage and nitrogen fertilizer influence on carbon and silica
distribution in a mollisol of the Pacific Northwest. Soil Science Society
of America Journal 69:1102-1109.
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Sequestering Carbon in Cropland: Effects of Management in Semiarid Regions
of Northwestern Usa and Western Canada
Liebig, M.A., Gollany, H.T. 2004. Sequestering carbon in cropland: Effects
of management in semiarid regions of northwestern usa and western canada.
Meeting Proceedings.
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Greenhouse Gas Contributions and Mitigation Potential of Agricultural
Practices in Northwestern Usa and Western Canada
Liebig, M.A., Morgan, J.A., Reeder, S.J., Ellert, B.H., Gollany, H.T.,
Schuman, G.E. 2005. Greenhouse gas contributions and mitigation potential
of agricultural practices in northwestern usa and western canada. Soil &
Tillage Research 83:25-52.
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Carbon Sequestration in the Semi-Arid Pacific Northwest: Effects of Land
Management and Landscape Position
Gollany, H.T., Baker, A.A., Oviatt, H.S. 2004. Carbon sequestration in the
semi-arid Pacific Northwest: effects of land management and landscape
position. Agronomy Abstracts. CD-ROM, S03-gollany4540. Madison, WI.
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Greenhouse Gas Contributions and Mitigation Potential of Agricultural
Practices in Northwestern Usa and Western Canada.
Liebig, M.A., Morgan, J.A., Reeder, S.J., Ellert, B.H., Schuman, G.E.
2004. Greenhouse gas contributions and mitigation potential of
agricultural practices in northwestern usa and western canada. Meeting
Abstract.
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Rotary Subsoiling to Reduce Erosion and Improve Infiltration in Newly
Planted Winter Wheat after Summer Fallow
Williams, J.D., Wuest, S.B., Schillinger, W.F., Gollany, H.T. 2004. Rotary
subsoiling to reduce erosion and improve infiltration in newly planted
winter wheat after summer fallow. IN: Special Report 1054, 2004 Columbia
Basin Agricultural Research Center Annual Report. Oregon State University,
8 june 2004, Adams, OR.
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Carbon and Nitrogen Dynamics in the Soil-Plant Continuum: Measured and
Simulated
Gollany, H.T., Clapp, C.E., Molina, J., Linden, D.R., Allmaras, R.R.,
Layese, M.F. 2002. Carbon and nitrogen dynamics in the soil-plant
continuum: measured and simulated. Meeting Abstract. Proceedings of
natural organic matter in soil and water. North Central Region Symposium.
p. 68.
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Nitrogen Leaching and Denitrification in Continuous Corn As Related to
Residue Management and Nitrogen Fertilization
Gollany, H.T., Clapp, C.E., Molina, J., Linden, D.R., Allmaras, R.R.,
Layese, M.F., Baker, J.M. Cheng, H.H. Nitrogen leaching and
denitrification in continuous corn as related to residue management and
nitrogen fertilization. Environmental management. 2004.
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Extractable Phosphorus Following Soil Amendment with Manure from Swine Fed
Low-Phytate Corn
Gollany, H.T., Schmitt, M.A., Bloom, P.O., Randall, G.W., Carter, P.R.,
Extractable phosphorus following soil amendment with manure from swine fed
low-phytate corn. Soil Science 168:606-616. 2003
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Subsoiling Influence on Nutrients in Runoff Following Rainfall Simulation
Gollany, H.Y., Wuest, S.B., Williams, J.D., Schillinger, W.F., Baker, A.A.,
Robertson, D.S., Subsoiling influence on nutrients in funoff following
rainfall simulation. Agronomy Abstracts.
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Nitrogen
Leaching and Denitrification As a Function of Residue Management and
Nitrogen Fertilzer Rates in the Continuous Corn System
Gollany, H.T., Clapp, C.E., Molina, J., Linden, D.R., Allmaras, R.R,
Layese, M.F., Dowdy, R.H., Cheng, H.H. Nitrogen leaching and
denitrification as a function of residue management and nitrogen
fertilizer rates in the continuous corn system. USDA symposium on natural
resource management to offset greenhouse gas emissions. 2002.
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