Fertility Publications

54 Publications

Greenhouse Gas Fluxes from Irrigated Sweet Corn (Zea mays L.) and Potato (Solanum tuberosum L.)

Chapter 21 in Climate Friendly Farming: Improving the Carbon Footprint of Agriculture in the Pacific Northwest. Full report available at http://csanr.wsu.edu/pages/Climate_Friendly_Farming_Final_Report/.

Yield, Protein and Nitrogen Use Efficiency of Spring Wheat: Evaluating Field-Scale Performance

Chapter 17 in Climate Friendly Farming: Improving the Carbon Footprint of Agriculture in the Pacific Northwest. Full report available at http://csanr.wsu.edu/pages/Climate_Friendly_Farming_Final_Report/.

Organic Waste to Resources Research and Pilot Project Report: Producing Energy and Fertilizer from Organic Municipal Solid Waste: Enhancing Hydrolysis and Bacterial Populations and Mixing and Thermodynamic Modeling of New Solid Waste Treatment Technology

Usama Zaher, Shulin Chen, Chenlin Li, Liang Yu, and Timothy Ewing, June 2009. This project developed, tested and modeled a high solids anaerobic digester consisting of a solids reactor and a leached liquids UASB for reacting volatile fatty acids. At near neutral pH the system improves methane production 50% over existing digesters, while return flow reseeds the solids digester with high titer micro-organisms that improved biological kinetics. The dual reactors system provides for control of digester limiting acid and ammonia processes, while allowing for nutrient recovery, and significantly improves performance for capital outlay.

Proceedings of the Department of Ecology’s Beyond Waste Workshop (2009)

A special workshop planned by CSANR and hosted by the Department of Ecology Waste 2 Resources Division to feature state-funded research projects relating to the topics of recovering energy and resources (including soil amendments) from organic wastes.

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.

Improving Nitrogen Use Efficiency in Dryland Cereal Crops With Precision Nitrogen Management Technology – Fall 2008

Article in Sustaining the Pacific Northwest Newsletter

Monitoring Greenhouse Gas Fluxes from an Irrigated AgroEcosystem – Fall 2008

Article in Sustaining the Pacific Northwest Newsletter

Comparing tillage and mulching for organic orchard performance

Wiman, M., Kirby, E., Granatstein, D., Mullinix, K. 2008. Poster presented at 2008 BIOAg Research Symposium.

Material Registration for Organic Production – Winter 2008

Article in Sustaining the Pacific Northwest Newsletter

High Quality Fiber and Fertilizer as Co-Products from Anaerobic Digestion

Kruger, C.E., Chen, S., MacConnell, C.B., Harrison, J.H., Shumway, C.R., Zhang, T., Oakley, K., Bishop, C., Frear, C., Davidson, D., and Bowers, K. (2008). Journal of Soil and Water Conservation. 63(1), 12A-13A.

Effects of Ground Cover Management Strategies on Yield and Nitrogen Supply in Organic Apple Production Systems

Poster presentation – BIOAg Research Symposium 2008.

Optimizing Nitrogen Fixation in Pulses

Poster presentation – BIOAg Research Symposium 2008.

Renewable Fertilizer from Nutrient Extraction of Anaerobically Digested Dairy Manure

Poster presentation – BIOAg Research Symposium 2008.

Producing Energy and Fertilizer from Organic Municipal Solid Waste – Project Deliverable #1

Usama Zaher, Dae-Yeol Cheong, Binxin Wu, and Shulin Chen, June 2007. A literature review of current digester technologies formed the framework for designing a bench scale study of a high solids anaerobic digestion (HSAD) system. The study shows that significant improvements in methane production can be attained while decreasing capital costs for facilities. A new digester design is proposed that will optimize methane from organic food and green waste digestion, while recovering nutrients from the digestate.

Gaseous N-losses from potato under Center Pivot Irrigation

Poster Presentation

Reduced nitrate leaching and enhanced denitrifier activity and efficiency in organically fertilized soils.

S.B. Kramer, J.P. Reganold, J.D. Glover, B.J.M. Bohannan, and H.A. Mooney. 2006. Proc. Natl. Academy Sciences 103:4522-4527.

Organic Fertilizer Calculator: A New Planning Tool for Comparing the Cost, Value, and Nitrogen Availability of Organic Materials – September 2006

Article in Sustaining the Pacific Northwest Newsletter

Chemigation and Fertigation in Washington State – December 2006

Article in Sustaining the Pacific Northwest Newsletter

Estimating Plant-Available Nitrogen Release from Manures, Composts, and Specialty Products

Gale, E., D. Sullivan, C. Cogger, A. Bary, D. Hemphill and E. Myhre. 2006. J. Environ. Qual. 35:2321-2332.

Survivability of Fecal Coliform in Soil after Winter Application of Dairy Slurry on a Transitional-organic, Grazing Based Dairy – December 2005

Article in Sustaining the Pacific Northwest Newsletter

Using Leguminous Cover Crops as a Nitrogen Source for Organic Grape Production – September 2005

Article in Sustaining the Pacific Northwest Newsletter

Diving into Compost Tea

Carpenter-Boggs, L. 2005. Biocycle 46:61-62.

Using Local Sources of Organic Nutrients

Use of organic materials from livestock farms and recycled urban waste streams can help improve soil productivity and reduce nutrient imbalances, and can contribute to the sustainability of local agriculture. Site includes link to an organic fertilizer calculator.

Communal Farming with the Women of Iscayachi: Rock Phosphate and Manure Use in Small Farming Systems in Bolivia – December 2004

Article in Sustaining the Pacific Northwest Newsletter

Soil Organic Matters – September 2004

Article in Sustaining the Pacific Northwest Newsletter

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