Soil Quality Publications

24 Publications

Productivity, economics, and fruit and soil quality of weed management systems in commercial organic orchards in Washington State, USA

Granatstein, D., P. Andrews, and A. Groff. May 2014. Organic Agriculture. DOI 10.1007/s13165-014-0068-0

Nitrogen Management and Climate Change Mitigation in Pacific Northwest Cropping Systems

Yorgey, G. 2014. Recorded webinar. Part of Pacific Northwest Agriculture and Climate Change Webinar Series available here: http://csanr.wsu.edu/webinars/pnw-ag-and-climate-change/ .

Nitrous Oxide Emissions in Inland Pacific Northwest Cropping Systems

Yorgey, G. 2014. Recorded webinar. Part of Pacific Northwest Agriculture and Climate Change Webinar Series available here: http://csanr.wsu.edu/webinars/pnw-ag-and-climate-change/ .   Flux Tower 3-minute video referenced in presentation.

Nitrogen Cycling and Losses in Agricultural Systems

Borrelli, K. 2014. Recorded webinar. Part of Pacific Northwest Agriculture and Climate Change Webinar Series available here: http://csanr.wsu.edu/webinars/pnw-ag-and-climate-change/ .

Management to Reduce N2O Emissions in Organic Vegetable Production Systems

Cogger, C., A. Fortuna, D. Collins. Feb 27, 2014. The second of a two-part webinar series on Greenhouse Gas Emissions and Soil Quality in Long-term Integrated and Transitional Reduced Tillage Organic Systems.

This is the focus of our current research. How do different organic vegetable production systems affect N2O emissions, and how do other outcomes of those systems affect their potential for adoption?

  • Systems include full tillage with high-carbon amendment (compost), full tillage with low carbon amendment (broiler litter), pasture-vegetable rotation, and reduced tillage cover crop mulch.
  • Measurements include N2O and CO2 emissions, soil N, microbial ecology focused on denitrification organisms, crop yield, and soil quality. Measurements are focused on key times during the season, including amendment application and tillage, irrigation, and freeze-thaw.

Intended audience is other researchers, and interested extension faculty and farmers.

Why the Concern about Nitrous Oxide Emissions?

Cogger, C., A. Fortuna, D. Collins. Feb 25, 2014. The first of a two-part webinar series on Greenhouse Gas Emissions and Soil Quality in Long-term Integrated and Transitional Reduced Tillage Organic Systems.

Topics for this webinar include:

  • Source and properties of N2O as a greenhouse gas, its relative contribution to global
  • warming, and the role of agriculture in N2O emissions
  • Review of the nitrogen cycle and the production of N2O
  • The relationship between organic practices and N2O production
  • How we measure N2O emissions

Intended audience is extension faculty and farmers who want a big picture perspective on why we’re interested in nitrous oxide emissions.

Soil Fertility in Organic Systems: A Guide for Gardeners and Small Acreage Farmers

Collins,D. C. Miles, C. Cogger, R. Koenig. 2013.  Pacific Northwest Extension Publication PNW646.

Soil Testing: A Guide for Farms with Diverse Vegetable Crops

Collins, D. 2012. Washington State University Extension. EM050E.

Northwest Soil Science: Nitrogen Mineralization

Soil Scientist Doug Collins published an article on Readthedirt.org that explains his research on how and when soil nutrients are available to crops.

A Fine Thin Skin – wind, water, valcanoes and ice

Steury, 2011.  Article highlighting CSANR soil research in Washington State Magazine.

Closing the recycling loop through organic amendments in agriculture and gardens

Recorded webinar (online presentation) from Jan 2011 by Craig Cogger, Crop and Soils Scientist and Extension Educator. This seminar discusses research and guidelines on soil amendment choices based on use, nitrogen availability, carbon sequestration potential, handling nutrient imbalances in organic amendments, and an update on herbicide issues in some composts.

Growing Vegetables in Areas Where Soils Were Contaminated with Heavy Metals – March 2009

Article in Sustaining the Pacific Northwest Newsletter

Orchard floor management effects on nitrogen fertility and soil biological activity in newly established organic apple orchard.

L. Hoagland, L. Carpenter-Boggs, D. Granatstein, M. Mazzola, J. Smith, F. Peryea, and J. Reganold. 2008. Biology and Fertility of Soils online.

Soils and Soil Testing

Links for farmers and gardeners to resources on soil sampling, soil testing, and soil test interpretation.

Soil Quality

A series of measurements was begun in 2004 to assess selected soil physical and biological properties in a variety of cropping and management systems. Measurements include bulk density, soil compaction, soil organic matter, and aggregate stability. Biological measurements began in 2005.

Soil and winegrape quality in biodynamically and organically managed vineyards.

J. R. Reeve, L. Carpenter-Boggs, J. P. Reganold, A. L. York, G. McGourty, and L. P. McCloskey. 2005. Amer. J. Enol. Vitic. 56: 367-376.

Soil Organic Matters – September 2004

Article in Sustaining the Pacific Northwest Newsletter

On-farm Composting for Residue Management and Soil Quality Improvement – September 2004

Article in Sustaining the Pacific Northwest Newsletter

Measuring Soil Quality – Initial Considerations – September 2003

Article in Sustaining the Pacific Northwest Newsletter

Soil and plant mineral nutrition and fruit quality under organic, conventional, and integrated apple production systems in Washington State, USA.

P.K. Andrews, J.K. Fellman, J.D. Glover, J.P. Reganold. 2001. Acta Hort. 564:291-298.

Systematic method for rating soil quality of conventional, organic, and integrated apple orchards in Washington State

J.D. Glover, J.P. Reganold, P.K. Andrews. 2000. Agriculture, Ecosystems, and Environment 80:29-45.

Organic and Biodynamic Management: Effects on Soil Biology

Carpenter-Boggs, L., A.C. Kennedy, J.P. Reganold. 2000. Soil Sci. Soc. Am. J. 64:1651-1659.

Significance of gravimetric versus volumetric measurements of soil quality under biodynamic, conventional, and continuous grass management.

J.P. Reganold, A.S. Palmer. 1995. J. Soil Water Conservation 50:298-305.

Soil quality and financial performance of biodynamic and conventional farms in New Zealand.

J.P. Reganold, A.S. Palmer, J.C. Lockhart, and A.N. Macgregor. 1993. Science 260(5106):344-349.