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Tillage Alternatives

Tillage has long been used to incorporate crop residues, prepare a seedbed, control weeds, and loosen the soil. However, in accomplishing these goals, tillage also reduces soil organic matter, disrupts soil structure, and leaves the soil surface prone to wind and water erosion. Systems that reduce or even eliminate tillage, while maintaining yields, have been developed for some crops and regions. These systems have the potential to build soil quality and reduce erosion.

 

Featured Publications

Current Status of Certified Organic Agriculture in Washington State: 2017

Kirby, E. and D. Granatstein. Details on the Washington organic tree fruit sector, as well as some national and international data. Includes information on markets, production area, production volume, prices, and exports. Powerpoint format.

Approaches to Nutrient Recovery from Dairy Manure

Frear, C., J. Ma, G. Yorgey. 2018. WSU Fact Sheet EM112E. This fact sheet is part of the AD Systems Series.

Advancing Organics Management in Washington State: The Waste to Fuels Technology Partnership 2015-2017 Biennium

Chen, S., Frear, C., Garcia-Pérez, M., Kruger, C., Ewing, T., Jensen, J., Yorgey, G., Gang, D.R., Amonette, J., Ayiania, M., Berim, A., Botella, L., Carbajal Gamarra, F.M., Cleary, J., Dunsmoor, A., Finch, R.W., Fuchs, M., Haghighi Mood, S., Hall, S.A., Han, Y., Jobson, B.T., Long, R., Ma, J., Mainali, K., Moller, D., Neuenschwander, L., Seker, A., Sjoding, D., Stankovikj, F., Suliman, W., Tanzil, A., Terrell, E., Tran, C-C., Xiong, X., Yu, L. 2018. Compiled and edited by Hills, K., Hall, S.A., Saari, B., Zimmerman, T. Waste 2 Resources, Washington State Department of Ecology Publication No. 18-07-010. Olympia, Washington. 424 pp. June 2018.

Impacts of near-term climate change on irrigation demands and drop yields in the Columbia River Basin

Rajagopalan, K., K.J. Chinnayakanahalli, C.O. Stockle, R.L. Nelson, C.E. Kruger, M.P. Brady, K. Malek, S. Dinesh, M.E. Barber, A.F. Hamlet, G.G. Yorgey, and J.C. Adam. 2018. Water Resources Research.

Estimating climate change effects on grazing management and beef cattle production in the Pacific Northwest

JS Neibergs, TD Hudson, CE Kruger, K Hamel-Rieken. 2018. Climatic Change, 5-17.  

Completing a Successful Feasibility Study for an Anaerobic Digestion Project

Jensen, J., C. Frear, C. Kruger, G. Yorgey. Jan. 2018. WSU Fact Sheet FS292E. This fact sheet is part of the AD Systems Series.

Technology Research and Extension Related to Anaerobic Digestion of Dairy Manure, 2015-2017 Biennium

Garcia-Pérez, M., Chen, S., Kruger, C., Yorgey, G., Ai, P., Ayania, M., Dunsmoor, A., Englund, K., Ewing, T., Frear, C., Gao, A., Ghoghare, R., Hall, S.A., Jensen, J., Ma, J., Manoharan, G., Martinez, J., Nasir, A., Parlina, I., Pelaez-Samaniego, M.R., Pereira-Ferraz, G., Rajagopalan, K., Smith, M., Suliman, W., Wang, D., Yao, Y., Yu, L. 2017. Compiled and edited by Hills, K., Hall, S.A., Saari, B., Zimmerman, T. A Project Report for the Washington State University Agricultural Research Center and the Washington State Department of Agriculture. 173 pp.

Integrating historic agronomic and policy lessons with new technologies to drive farmer decisions for farm and climate: The case of Inland Pacific Northwestern U.S.

Pan, W., W. Schillinger, F. Young, E. Kirby, G. Yorgey, K. Borrelli, E. Brooks, V. McCracken, T. Maaz, S. Machado, I. Madsen, J. Johnson-Maynard, L. Port, K. Painter, D. Huggins, A. Esser, H. Collins, C. Stockle, and S. Eigenbrode. 2017. Frontiers in Environmental Science. 5:76. doi: 10.3389/fenvs.2017.00076

Comparison of Greenhouse Gas Offset Quantification Protocols for Nitrogen Management in Dryland Wheat Cropping Systems of the Pacific Northwest

TT Brown, CM Lee, CE Kruger, JP Reganold, DR Huggins. 2017. Frontiers in Environmental Science 5, 72.

Video: Recovering Nutrients from Manure – New Tools for Maintaining Air and Water Quality

Hall, S., and G.G. Yorgey. 2017.  Produced by CAHNRS Communications. Washington State University, Pullman, WA.  This video profiles two Washington State dairies – Edaleen Dairy and Royal Dairy – who have implemented new technologies that partition, and in some cases recover, some of the nitrogen and phosphorus in manure. The video discusses both the potential that these new tools have to improve manure management for dairies, and some of the challenges that remain.

Building Soils for Better Crops – 2016 Conference

Design and Use of Representative Agricultural Pathways for Integrated Assessment of Climate Change in US Pacific Northwest Cereal-Based Systems

John M Antle, Jianhong E Mu, Hongliang Zhang, Susan M Capalbo, Penelope L Diebel, Sanford D Eigenbrode, Chad E Kruger, Claudio O Stöckle, JD Wulfhorst, and John T Abatzoglou. 2017. Frontiers in Ecology and Evolution 5, 99.

Northwest U.S. Agriculture in a Changing Climate: Collaboratively Defined Research and Extension Priorities

Georgine Yorgey, Sonia A. Hall, Elizabeth Allen, Elizabeth Whitefield, Nichole Embertson, Vincent P. Jones, Kirti Rajagopalan, Brooke R Saari, Gabrielle Roesch-McNally, Bea Van Horne, John Abatzoglou, Harold P. Collins, Laurie Houston, Timothy W Ewing, and Chad E. Kruger,  Front. Environ. Sci., 31 August 2017

Current status of certified organic agriculture in Washington State: 2016

Kirby E. and D. Granatstein. A summary of the Washington organic sector in 2016, including certified and transition crop acres, dairy numbers, and organic farm gate sales. Additional data on national and global trends are included as well as a summary of key findings for Washington from the 2015 USDA Organic Producer Survey. Includes multi-year graphs of selected crops, dairy, and sales.  Powerpoint format.

Recent Trends in Certified Organic Tree Fruit: Washington State 2016

Kirby, E. and D. Granatstein.  Current statistics on organic tree fruit acreage trends, varieties, shipments, prices, exports, and markets. Includes some global area data and national area and production data. Annotated Powerpoint format.

Certified organic acreage and sales in Washington State: 2008-2016

Kirby, E. and D. Granatstein. Detailed tables showing specific crop acreages from 2008-2016, farm numbers and organic acres by county, and organic farm gate sales by county. Numbers of organic dairies and dairy cows are also included.

Biofumigant Cover Cropping in Potatoes: Dale Gies (Farmer to Farmer Case Study Series)

Yorgey, G.G., S.I. Kantor, C.E. Kruger, K.M. Painter, H. Davis, and L.A. Bernacchi. 2017. Pacific Northwest Extension Publication 693, Pullman, WA.

Crop Residue Management

Tao H., G. Yorgey, D. Huggins, D. Wysocki. 2017. Chapter 4 In Yorgey, G. and C. Kruger, eds. Advances in Dryland Production Systems in the Pacific Northwest. Washington State University Extension, Pullman, WA.

Precision Agriculture

Weddell, B., T. Brown, K. Borrelli. 2017. Chapter 8 In Yorgey, G. and C. Kruger, eds. Advances in Dryland Production Systems in the Pacific Northwest. Washington State University Extension, Pullman, WA.

Disease Management for Wheat and Barley

Kirby, E., T. Paulitz, T. Murray, K. Schroeder, X. Chen. 2017. Chapter 10 In Yorgey, G. and C. Kruger, eds. Advances in Dryland Production Systems in the Pacific Northwest. Washington State University Extension, Pullman, WA.

 

Additional Publications

C-Farm: A Simple Model to Evaluate the Carbon Balance of Soil Profiles

Chapter 26 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/.

Life Cycle Assessment of the Potential Carbon Credit from No- and Reduced- Tillage Winter Wheat in the U.S. Northwest

Chapter 25 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/.

An Economic Analysis of the Potential for Carbon Credits to Improve Profitability of Conservation Tillage Systems Across Washington State

Reduced Tillage in an Irrigated Potato Rotation

Chapter 20 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/.

Dryland Agriculture’s Impact on Soil Carbon Sequestration in the Pacific Northwest.

Chapter 13 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/.

Soil Carbon Under Dryland Agriculture in the Columbia Basin of the Pacific Northwest as Assessed by C-Farm

Chapter 27 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/.

No-Till: How Farmers Are Saving the Soil by Parking their Plows

Huggins and Reganold. Article published in Scientific American July 2008.

Comparing tillage and mulching for organic orchard performance

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

No-till: The quiet revolution

Huggins, D.R. and J.P. Reganold. 2008. Scientific American 299(July):70-77.

High Residue Farming Under Irrigation: Why Wait? – Summer 2007

Article in Sustaining the Pacific Northwest Newsletter. Summer 2007.

Cost Savings from Reduced Tillage in a Potato/Corn/Corn Rotation under Center Pivot Irrigation, Columbia Basin

Poster presentation from 2006 Paterson Field Day.


 
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