Sushil Thapa, Ph.D.

Postdoctoral Research Associate

 Adjunct Professor
West Texas A&M University
Ph.D., West Texas A&M University, Texas – 2016
M.S., WageningenUniversity, the Netherlands – 2009
B.S., Purbanchal University, Nepal – 2005

Texas A&M AgriLife Research
6500 Amarillo Blvd W
Amarillo, TX 79106
Phone: (806)677-5600
Fax: (806)677-5644



My research interests extend across integrated crop management and environmental disciplines with particular emphasis on issues related to biotic and abiotic stress on crop production, soil-water extraction and use, nutrient management, and evaluation of plant traits using high-throughput remote sensing.


Postdoctoral Research Associate (June 2016 – Present), Texas A&M University, Texas A&M AgriLife Research at Amarillo, Texas

Graduate Research Assistant (Aug. 2012 – May 2016), West Texas A&M University, Canyon, Texas

Lecturer of Crop Science (Sept. 2009 – Aug. 2012), Purbanchal University, Kathmandu, Nepal

Agriculture Officer (Jan. 2005 – Aug. 2007), Collaborative project between ICCO-the Netherlands and WOREC-Nepal, Kathmandu, Nepal


Award of Excellence – Non-Professional Researchers/Specialists, 2017. Texas A&M AgriLife Research and Extension Center, Amarillo, Texas.

 Special Achievement Award for Research Collaboration, 2017. Soil and Crop Sciences Department, Texas A&M University, College Station, Texas.

First Place Research Award (oral), 2016; Second Place Research Award (poster), 2015; Third Place Research Award (talk), 2014. West Texas A&M University, Canyon, Texas.

B.A. and Jane Ann Stewart Dryland Agriculture Scholarship, 2013, 2014 and 2015. West Texas A&M University, Canyon, Texas.

Future Leaders Forum Scholarship, 2013. Association for International Agriculture and Rural Development (AIARD), Washington, D.C.

Netherlands Fellowship Programme (NFP) Award, 2012. Executive Program in Project Management (21 days) at Maastricht School of Management, the Netherlands.

Netherlands Fellowship Programme (NFP) Award, 2007-2009. M.S. in Agro-ecology at Wageningen University and Research Centre, the Netherlands.

Ministry of Commerce, P.R. China Fellowship, 2006. Training on Farming Systems and Dryland Farming Techniques (60 days) at the Agricultural University of Hebei, P.R. China

 PUBLICATIONS (2016 – Present)

Book Chapters

Stewart, B.A., and Thapa. 2016. Dryland farming: Concept, origin, and brief history. In: Innovations in Dryland Agriculture, M. Farooq and H.M. Siddique (eds). Springer International Publishers. p. 3-29.

Peer-reviewed Journal Articles 

Thapa, S., B.A. Stewart, Q. Xue, M.B. Rhoades, B. Angira, and J. Reznik. 201x. Canopy temperature, grain yield, and harvest index in corn as affected by planting geometry in a semi-arid environment. Field Crops Res. (in review)

Thapa, S., Q. Xue, and T. Marek. 201x. Production potential of maize hybrids under restricted irrigation in a semi-arid environment. Agric. Water Manag. (in review)

Thapa, S., Q. Xue, K.E. Jessup, J.C. Rudd, S. Liu, R.N. Devkota, and J. Baker. 201x. Soil water extraction and use by winter wheat cultivars under limited irrigation. Field Crops Res. (in review)

Stewart, B.A., S. Thapa, Q. Xue, and R. Shrestha. 2018. Climate change effect on winter wheat (Triticum aestivum) yields in U.S. Great Plains. J. Soil Water Conserv. (in print)

Thapa, S., S.K. Reddy, M.P. Fuentealba, Q. Xue, J.C. Rudd, and S. Liu. 2018. Physiological responses to water stress and yield of winter wheat cultivars differing in drought tolerance. J. Agron. Crop. Sci. (early view published) doi:10.1111/jac.12263 

Thapa, S., Q. Xue, K.E. Jessup, J.C. Rudd, S. Liu, R.N. Devkota, and J. Baker. 2018. Canopy temperature depression at grain filling correlates to winter wheat yield in the U.S. Southern High Plains. Field Crops Res. 217:11-19.

Thapa, S., Q. Xue, K.E. Jessup, J.C. Rudd, S. Liu, G.P. Pradhan, R.N. Devkota, and J. Baker. 2017. More recent wheat cultivars extract more water from greater soil profile depths to increase yield in the Texas High Plains. Agron. J. 109:1-10. doi:10.2134/agronj2017.02.0064

Thapa, S., and E.A. Lantinga. 2017. Growing coffee in shade: A strategy to minimize the prevalence of Coffee White Stem Borer, Xylotrechus quadripes. Southwestern Entomol. 42(2): 357-362. doi: 10.3958/059.042.0205

Thapa, S., B.A. Stewart, Q. Xue, and Y. Chen. 2017. Manipulating plant geometry to improve microclimate, grain yield, and harvest index in grain sorghum. PLoS ONE 12(3): e0173511. doi:10.1371/journal.pone.0173511

Thapa, S., B.A. Stewart, and Q. Xue. 2017. Grain sorghum transpiration efficiency at different growth stages. Plant Soil Environ. 63: 70-75. doi: 10.17221/796/2016-PSE

Thapa, S., B.A. Stewart, Q. Xue, P. Pokhrel, T. Barkley, and M. Bhandari. 2016. Growing corn in clumps reduces canopy temperature and improves microclimate. J. Crop Improv. 30: 614-631.

Thapa, S., and E.A. Lantinga. 2016. Infestations by Coffee White Stem Borer (Xylotrechus quadripes) in relation to soil and plant nutrient content and associated quality aspects. Southwestern Entomol. 41 (2): 331-336. doi: 10.3958/059.041.0209

 Other Publications

More than 20 scientific abstracts and presentations, and more than 10 newspaper and online articles.


2015 – Present, National Society of Leadership and Success
2013 – Present, American Society of Agronomy
2013 – Present, Crop Science Society of America
2013 – Present, Soil Science Society of America
2013 – 2016, Environmental Science Society at WTAMU
2013 – 2014, Association for International Agriculture and Rural Development (AIARD)

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