Publications

Scientific Journal Articles

Park, E.Y., B-K Baik, S. Machado, H. Gollany, and E. P. Fuerst5. 2015. Functional and Nutritional Characteristics of Soft Wheat Grown in No-Till and Conventional Cropping Systems. Cereal Chem. 92(2)332-338. http://dx.doi.org/10.1094/CCHEM-09-14-0184-R

Machado. S., L. Pritchett, and S. Petrie. 2015. No-tillage Cropping Systems can Replace Traditional Summer Fallow in North-Central Oregon. Agron J. 107:1863-1877.

Ghimire, R. and S. Machado. 2015. Long-Term Crop Residue and Nitrogen Management Effects on Soil Profile Carbon and Nitrogen in Wheat – Fallow Systems Agron J. 107:2015-2240

Brady, M.V., K. Hedlund, R-G. Cong, L. Hemerik, S. Hotes, S. Machado, L. Mattsson, E. Schulz and I. K. Thomsen. 2015. Valuing Supporting Soil Ecosystem Services in Agriculture: a Natural Capital Approach. Agron. J. 107:1809-1821. doi:10.2134/agronj14.0597

Gwenzi, W., N. Chaukura, F.N.D. Mukome, S. Machado, B. Nyamasoka. 2015. Biochar production and applications in sub-Saharan Africa: Opportunities, constraints, risks and uncertainties. Journal of Environmental Management 150:250-261.

Smiley, R. W., Machado, S., Gourlie, J. A., Pritchett, L. C., Yan, G. P., and Jacobsen, E. E. 2013. Effects of crop rotations and tillage on Pratylenchus spp. in the semiarid Pacific Northwest United States. Plant Dis. 97:537-546.

Smiley, R. W., Machado, S., Gourlie, J. A., Pritchett, L. C., Yan, G. P., and Jacobsen, E. E. 2013. Influence of semi-arid cropping systems on root diseases and inoculum density of soilborne pathogens. Plant Disease 97:547-555.

Machado, S. 2011. Soil Organic Carbon Dynamics in the Pendleton Long-Term Experiments: Implications for Biofuel Production in Pacific Northwest. Agron. J. 103:253–260 (doi:10.2134/agronj2010.0205s)

Solomon, D., J. Lehmann, K. Knoth de Zarruk, J. Dathe, J. Kinyangi, B. Liang, and S. Machado. 2010. Speciation and Long- and Short-term Molecular-level Dynamics of Soil Organic Sulfur Studied by X-ray Absorption Near-Edge Structure Spectroscopy. J. Environ. Qual. 40: doi:10.2134/jeq2010.0061

Machado, S. 2009. Does intercropping have a role in modern agriculture? Journal of Soil and Water Conservation 64(2):55A-57A; doi:10.2489/jswc.64.2.55A

Stevens, J.F., R. L. Reed, S. Alber, L. Pritchett, and S. Machado. 2009. Herbicidal Activity of Glucosinolate Degradation Products in Fermented Meadowfoam (Limnanthes alba) Seed Meal. J. Agric. Food Chem., Article ASAP • DOI: 10.1021/jf8033732

Smiley, R. W., and Machado, S. 2009. Pratylenchus neglectus reduces yield of winter wheat in dryland cropping systems. Plant Dis. 93:263-271.

Inostroza, L., A. del Pozo, I. Matus, D. Castillo, P. Hayes, S. Machado  and  A. Corey. 2009.  Association mapping of plant height, yield, and yield stability in recombinant chromosome substitution lines (RCSLs) using Hordeum vulgare subsp. spontaneum as a source of donor alleles in a Hordeum vulgare subsp. vulgare background. Molecular Breeding 23(3):365-376.

Solomon, D.,  J. Lehmann,  J. Kinyangi, A. Pell, J. Theis,  S. Riha,  S. Ngoze,  W. Amelung, C. Do Preez,  S. Machado,  B. Ellert,  and  H. Janzen. 2008. Anthropogenic and climate influences on biochemical dynamics and molecular-level speciation of sulfur in temperate, subtropical and subhumid tropical ecosystems. - Ecological Applications 19(4):989-1002

Machado, S., S. Petrie, K. Rhinhart, and R. E. Ramig. 2008. Tillage effects on water use and grain yield of winter wheat and green pea in rotation. Agronomy Journal 100:154-162.

Machado, S., S. Petrie, K. Rhinhart, and A. Qu. 2007. Long-Term Continuous Annual Cropping in the Pacific Northwest (PNW): Tillage and Fertilizer Effects on Grain Yield and Profitability of Winter Wheat, Spring Wheat, and Spring Barley. Soil and Tillage Research 94: 473-481

Machado, S. 2007. Allelopathy of Various Plant Species on Downy Brome. Agronomy Journal 99:127-132.

Machado, S., and S. Petrie. 2006. Analysis of unreplicated experiments: Introduction. Crop Sci. 46:2474-2475. This paper is an introduction to a series of four papers presented at a special symposium on "Analysis of Unreplicated Experiments", ASA, CSSA, SSSA Annual Meetings, Nov 8, 2005, Salt Lake, City, Utah.

Analysis of Unreplicated Experiments Symposium Papers

Introduction, Johnson, Loughin, Perrett, Roger

Machado, S., K, Rhinhart, and S. Petrie. 2006. Long-Term Cropping Systems Effects on Soil Organic Carbon Sequestration in Eastern Oregon. Journal of Environmental Quality 35:1548-1553.

Machado, S., C. Humphreys, B. Tuck, and M. Corp. 2006. Seeding Date, Plant Density, and Cultivar Effects on Chickpea Yield and Seed Size in eastern Oregon. Crop Management Journal, 21 June, 2006).Online publication: http://www.plantmanagementnetwork.org/sub/cm/research/2006/chickpea/ChickpeaYieldSize.pdf

Machado, S., R. Smiley, C. Humphreys, J. Gourlie, S. Easley, R. Whittaker, K. Rhinhart, and M. Siemens. 2006. Paraplow Effects on Diseases and Grain Yield of Spring Wheat and Chickpea, 2002-2003 (Biological and Cultural Tests for Control of Plant Diseases. Vol 21:FC057). Online publication: http://www.plantmanagementnetwork.org/pub/trial/bctests/Vol21/

Machado, S. 2006. Demarcating Management Zones For Site Specific Farming Using Electromagnetic Induction and Yield Maps in eastern Oregon. Crop Management Journal). Online publication: http://www.plantmanagementnetwork.org/sub/cm/research/2006/zones/SiteSpecific.pdf

Machado, S, E.D. Bynum, Jr., T. L. Archer, R.J. Lascano, L.T. Wilson, J. Bordovsky, E. Segarra, K. Bronson, D. M. Nesmith, and W. Xu. 2002. Spatial and Temporal Variability of Corn Growth and Grain Yield: Implications for Site-Specific Farming. Crop Science 42:1564-1576.

Machado, S, E.D. Bynum, Jr., T. L. Archer, J. Bordovsky, E. Segarra, K. Bronson, D.M. Nesmith, D.T. Rosenow, and G.C. Peterson. 2002. Spatial and Temporal Variability of Sorghum Grain yield: Site-Specific Relations of Soil, Water, Pests, and Diseases. Precision Agriculture 3: 389-406.

Machado, S. and G.M. Paulsen. 2001. Combined Effects of Drought and High Temperature on Water Relations of Wheat and Sorghum. Plant and Soil 233:179-187.

Machado, S., E.D. Bynum, Jr., T. L. Archer, R.J. Lascano, L.T. Wilson, J. Bordovsky, E. Segarra, K. Bronson, D.M. Nesmith, and W. Xu. 2000. Spatial and Temporal Variability of Corn Grain yield: Site-Specific Relationships of Biotic and Abiotic Factors. Precision Agriculture 2:343-360.

Wan, C. G., W. Xu, R.E Sosebee, S. Machado, and T. Archer. 2000. Hydraulic lift in drought-tolerant and -susceptible corn hybrids. Plant and Soil 219:117-126.  

Mashiringwani, N. A., S. Machado, and E. Mtisi. 1992. Wheat. p. 102-118. In E. E. Whingwiri, K. Mashingaidze, and M. Rukuni (ed.) Small-Scale Agriculture in Zimbabwe: Field Crop Production. Book Two. Rockwood Publ., Harare, Zimbabwe.

 

 

Numbered OSU Experiment Station and Extension Publications

Experiment station special reports and Extension publications are the primary resources for growers, fellow scientists, and the general public. Papers are blind-reviewed by peers at CBARC and USDA-ARS at Pendleton.

 

Experiment Station Special Reports

Machado, S., L. Pritchett, E. Jacobsen, S. Petrie, D. Smiley, D. Ball, D. Wysocki, S. Wuest, H. Gollany, and W. Jepsen. 2008. Long-term experiments at CBARC-Moro and the Center of Sustainability, Heppner, 2007-08. Oregon Agricultural Experiment Station Special Report 1091

Machado, S., L. Pritchett, E. Jacobsen, S. Petrie, D. Smiley, D. Ball, D. Wysocki, S. Wuest, H. Gollany, and W. Jepsen. 2007. Long-term experiments at CBARC-Moro and the Center of Sustainability, Heppner, 2006-07. Oregon Agricultural Experiment Station Special Report 1091

Machado, S., L. Pritchett, E. Jacobsen, S. Petrie, R. Smiley, D. Ball, D. Wysocki, S. Wuest, H. Gollany, and W. Jepsen. 2006. Long-term Experiments at CBARC-Moro and Center of Sustainability, Heppner, 2005. Oregon Agricultural Experiment Station Special Report 1068

 

Machado, S., Karl Rhinhart, Steve Petrie, Stewart Wuest, and Tami R. Johlke. 2006. Long-term Experiments at CBARC-Pendleton. Oregon Agricultural Experiment Station Special Report 1068

Machado, S., B. Tuck, and C. Humphreys. 2006. Alternate rotation crops: Lentils (Lens culinaris). Oregon Agricultural Experiment Station Special Report 1068.

 

Machado, S., B. Tuck, and C. Humphreys. 2005. Alternate rotation crops: Peas (Pisun sativum). Oregon Agricultural Experiment Station Special Report 1061.

 

Machado, S., Karl Rhinhart, Steve Petrie, Stewart Wuest, Robert F. Correa, and Tami R. Johlke. 2005. Long-term Experiments at CBARC-Pendleton, 2004. Oregon Agricultural Experiment Station Special Report 1061.

Machado, S. 2004, 2004. Potential Alternative Crops for Eastern Oregon. Oregon Agricultural Experiment Station Special Report 1054:84-102.

Machado, S. 2004. Christopher Humphreys, Brian Tuck, and Mary Corp. 2004. Evaluating Chickpea (Garbanzo Bean) for Adaptability to Eastern Oregon. Oregon Agricultural Experiment Station Special Report 1054:35-43 

Machado, S., Karl Rhinhart, Steve Albrecht, and Steve Petrie. 2004. Long-term Experiments at CBARC-Pendleton, 2002 and 2003. Oregon Agricultural Experiment Station Special Report 1054:61-76

Smiley, R., S. Machado, and K. Rhinhart. 2004 2004. Competition for water by windbreak trees: Distance of impact on wheat yield. Oregon Agricultural Experiment Station Special Report 1054:30-34

Machado S., C. Humphreys, B. Tuck, T. Darnell, and M. Corp. 2003. Variety, seeding date, row spacing, and seeding rate effects on grain yield and grain size of chickpeas in eastern Oregon. Oregon Agricultural Experiment Station Special Report 1047:25-31.

Albrecht, S., S. Machado, and D. Wilkins. 2003. Soil carbon trends in the Pacific Northwest wheat-fallow systems. Oregon Agricultural Experiment Station Special Report 1047:53-57.

 

Extension Publications (peer reviewed)

Machado, S., B. Tuck, J. Igo, S. Macnab, and J. Maley. 2006. Alternative Crops for the Columbia Basin. Oregon State University Extension Pub no: EM 8915.

Corp, M., S. Machado, R. Smiley, D. Ball, S. Petrie, M. Siemens. S. Guy. 2004. Chickpea production guide. Oregon State University Extension Pub no: EM 8791.

Kettel, K., B. Tuck, W.A. Payne, C. Chen, S. Machado, and R. Karrow. 2003. Dryland Cropping Systems: Narrow-leaf Lupin. OSU Extension Pub no EM 8834-E

 

Other Publications 

Machado, S. 2003. Improving Wheat Grain Quality Through Post-Flowering Drought and Heat Resistance. Oregon Wheat Pub. (September/October 2003 Issue)

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