Profile

Curriculum Vitae (pdf)

Education

• PhD, 2018, Soils and Biogeochemistry, University of California, Davis
• MS, 2015, International Agricultural Development, University of California, Davis
• BS, 2010, Plant Science, Cornell University

Teaching

• Soil: A Living System (SOIL SCI 201)
• Organic and Sustainable Agricultural Certifications: From Principles to Practice (SOIL SCI 303)
• Soil Fertility Management (SOIL SCI 547)

Research Interests

My research program focuses on soil-plant-water relations, soil physical and hydrologic health, soil fertility, and water-nutrient interactions. Key questions include: How can we manage soils to improve water relations, and how can we manage water to optimize soil processes and plant productivity? In western Washington where my research program is based, infiltration and hydraulic conductivity are central considerations for farmers wanting to get excess water off the field during the wet winters, but dry summers and limitations on irrigation mean that the soil’s water-holding capacity quickly becomes a key factor. With regard to soil fertility, key interests include nutrient requirements of understudied crops, the relationship between soil properties and crop nutrient requirements, interactions between nutrient management and plant health, and impacts of novel or alternative irrigation practices on soil nutrient dynamics. The focus of my Extension program is to help farmers to make informed decisions about managing soil moisture, irrigation, soil health, and soil fertility to improve productivity, reduce costs, safeguard plant health, and promote good stewardship of our natural resources.

Selected Honors and Awards

• 2025: American Society of Horticultural Science Outstanding Education Publication Award winner for papers published in 2024 (Sloan et al., 2024; senior and corresponding author, former MS student was the first author)
• 2024: Agronomy Journal top viewed article in the 12 months after publication (Belo et al., 2023; senior and corresponding author, former MS student was the first author)
• 2023: Vadose Zone Journal top 10% most downloaded article in the 12 months after publication (Singh et al., 2022; senior and corresponding author, former postdoc was the first author)
• 2022: WSU Global Campus Excellence in Online Teaching Award Nominee

Recent Publications

Scholarly Publications

Jadhav S., DeVetter L.W., LaHue G.T., Spencer S.L., Prudencio A., Caldana C., Fernie A.R., and M. Borghi. 2025. Nitrogen fertilizer exerts little impact on highbush blueberry floral chemistry, pollinator visitation, yield, and fruit quality. Physiol. Plant., 177:70526.

Singh N., Flury M., Neely H., Akin I., Bary A., and G.T. LaHue. 2025. Compaction of a sandy loam soil not impacted by long-term biosolids applications. Soil Tillage Res. 253:106648.

Wilson R., Aegerter B., and G.T. LaHue. 2024. The influence of sprinkler and drip irrigation on the incidence and severity of bacterial disease in onions grown in northeast California. Plant Health Prog. 25:293–298.

Varner H., Myhre L., Schacht B., Pupo J., Spawton K., du Toit L., and G.T. LaHue. 2024. Impacts of irrigation timing and quantity on spinach seed yield, vegetative growth, and Stemphylium leaf spot. HortScience. 59:820–830.

Sloan C., DeVetter L.W., Griffin LaHue D., Benedict C., Bryla D., and G.T. LaHue. 2024. Nitrogen supply from soil organic matter: Predictors and implications for recommended nitrogen application rates in northern highbush blueberry. HortScience. 59:725–735.

Belo T.R., du Toit L.J., Waters T.D., Derie M.L., Schacht B., and G.T. LaHue. 2023. Reducing the risk of onion bacterial diseases through managing irrigation frequency and final irrigation timing. Agricultural Water Management 288:108476.

Belo T.R., du Toit L.J., and G.T. LaHue. 2023. Reducing the risk of onion bacterial diseases through irrigation, fertility, and other cultural management strategies. Agron. J. 115:459–473.

Singh N., Kogan C., Chaudhary S., Rajagopalan K., and G.T. LaHue. 2022. Effects of controlled drainage and subirrigation on crop yield and soil moisture. Vadose Zone J. 21:e20219.

Carrijo D.R., LaHue G.T., Parikh S.J., Chaney R.L., and B.A. Linquist. 2022. Mitigating the accumulation of arsenic and cadmium in rice grain: a quantitative review of the role of water management. Sci. Total Environ. 839:156245.

Kendall A., Alexander T.R., LaHue, G.T., and C.A. Miles. 2022. Summer mechanical hedging is effective for pruning of eight cider apple cultivars. HortTechnology. 32:313–320.

Kendall A., Miles C., Alexander T., Scheenstra E., and G.T. LaHue. 2022. Reduced irrigation during orchard establishment conserves water and maintains yield for three cider apple (Malus domestica Borkh.) cultivars. HortScience. 57:118–125.

LaHue G.T. and B.A. Linquist. 2021. The contribution of percolation to water balances in water-seeded rice systems. Agric. Water Manag. 243:106445.

LaHue, G.T. and B.A. Linquist. 2019. The magnitude and variability of lateral seepage in California rice fields. Journal of Hydrology. 574:202-210.

Dahlke, H.E., G.T. LaHue, M.R.L. Mautner, N.P. Murphy, N.K. Patterson, H. Waterhouse, F. Yang, and L. Foglia. 2018. Aquifer Recharge as a tool to enhance sustainable groundwater management in California: examples from field and modeling studies. In: J. Friesen and L. Rodriguez Sinobas (Eds.), Advances in Chemical Pollution, Environmental Management and Protection: Advanced Tools for Integrated Water Resources Management, Volume 3. 215 pp.

Chirinda, N., L. Arenas, M. Katto, S. Loaiza, F. Correa, M. Ishitani, A.M. Loboguerrero, D. Martinez-Baron, E. Graterol, S. Jaramillo, C.F. Torres, M. Arango, M. Guzmán, I. Avila, S. Hube, D.B. Kurtz, G. Zorrilla, J. Terra, P. Irisarri, S. Tarlera, G.T. LaHue, W.B. Scivittaro, A. Noguera, and C. Bayer. 2018. Sustainable and low greenhouse gas emitting rice production in Latin America and the Caribbean: A review on the transition from ideality to reality. Sustainability. 10:671. doi: 10.3390/su10030671

Chirinda, N., L. Arenas, S. Loaiza, C. Trujillo, M. Katto, P. Chaparro, J. Nuñez, J. Arango, D. Martinez-Baron, A.M. Loboguerrero, L.A.B. Lopez-Lavalle, I. Avila, M. Guzmán, M. Peters, J. Twyman, M. García, L. Serna, D. Escobar, D. Arora, J. Tapasco, L. Maazbel, F. Correa, M. Ishitani, M. Da Silva, E. Graterol, S. Jaramillo, A. Pinto, A. Zuluaga, N. Lozano, R. Byrnes, G.T. LaHue, C. Alvarez, I. Rao, and R. Barahona. 2017. Novel technological and management options for accelerating transformational changes in rice and livestock systems. Sustainability. 9:1891. doi:10.3390/su9111891

LaHue, G.T., R.L. Chaney, M.A. Adviento-Borbe, and B.A. Linquist. 2016. Alternate wetting and drying in high yielding direct-seeded rice systems accomplishes multiple environmental and agronomic objectives. Agriculture, Ecosystems and Environment. 229:30-39.

LaHue G.T., M.A. Adviento-Borbe, B.A. Linquist, C. van Kessel, and S.J. Fonte. 2016. Fertilizer memory effects increase nitrous oxide emissions from zero N controls: implications for estimating fertilizer-induced emission factors. Journal of Environmental Quality. 45:1501-1508.

Selected Extension Publications

Maltry J., Collins D., LaHue G.T., and A. Jayakaran. 2025. Soil compaction in annual crop production: Causes, impacts, and solutions. WSU Extension Fact Sheet. FS396E. 14 pp.

Yoder J., Chaudhary S., Duarte B., Greene C., Jobe J., LaHue G.T.^†, Maroney C., Mauger G., Morgan H., Padowski J., Rajagopalan K., Raymond C., Rogers M., Rossman N., Singh N., Timpane-Padgham B., Wiseman C., and J. Won.  2021. Skagit Water Supply and Demand Synthesis. Story Map Series Prepared for the State of Washington Joint Legislative Task Force on Water Supply. 

Hills K., and C. Benedict (Eds.), Blua M., Collins D., DuPont T., Griffin LaHue D., Hoheisel G., Jensen A., Keller M., Koenig R., Kruger C., LaHue G.T.^†, McGuire A., and M. Moyer. 2021. Washington Soil Health Initiative Roadmap. 124 pp.

Other Selected Publications

Belo T., du Toit L., Waters T., Derie M., and G.T. LaHue. 2021. Effects of irrigation frequency and final irrigation timing on onion bacterial diseases in the Columbia Basin of Washington, 2020. Plant Disease Management Reports. 15:V109

García, M.A., M.C. Katto, J. Twyman, G.T. LaHue, and N. Chirinda. 2016. How might the gender roles affect the implementation of a new water-saving technique for Colombian rice production? Report of gender dimensions in Colombian rice production. Working Paper. CIAT Publication No. 437. International Center for Tropical Agriculture (CIAT), Cali, Colombia. 37 p.

Advising and Mentorship

Current Graduate Students

• Molly Monahan, M.S. Student in Soil Science, Project: Understanding the motivations and challenges of participants in incentive programs for compost application (Fall 2025 – Present)
• Isha Chand, M.S. Student in Soil Science, Project: Managing soil moisture and soil physical health for annual specialty crops in northwestern Washington (Spring 2024 – Present)
• Gagandeep Kaur, Ph.D. Student in Soil Science, Project: Impacts of tillage, lime, residue removal, and micronutrient fertilizers on soil health and crop nutritional quality (Fall 2022 – Present)
• Paul Martinez, Ph.D. Student in Soil Science, Project: Managing soils and micronutrients for soil physical health and crop nutritional quality (Fall 2022 – Present)

Former Graduate Students

• Sahil Thapa, M.S. Student in Soil Science, Project: Irrigation and nitrogen management to reduce the risk of bacterial bulb rots in onion crops (Fall 2023 – Summer 2025)
• Chloe Waters, M.S. Student in Agriculture, Project: Critical soil and plant tissue thresholds to guide nitrogen management in onion production (Spring 2023 – Spring 2025)
• Claire Yost, M.S. Student in Soil Science, Project: Impacts of regulated deficit irrigation on cider apple yield and quality (Fall 2022 – Present)
• Harmony Varner, M.S. Student in Soil Science, Project: Farmer-led irrigation experimentation: A model for learning and adaptation (Fall 2021 – Spring 2023)
• Tessa Belo, M.S. in Soil Science, Project: Impacts of irrigation and fertilization practices on bacterial diseases in onion bulb crops (Fall 2020 – Spring 2022, co-advisor – Dr. Lindsey du Toit)
• Aidan Kendall (co-advisor), M.S. in Horticulture, Project: Developing resource-efficient cider apple production systems (Fall 2020 – Spring 2022, primary advisor – Dr. Carol Miles)
• Cheyenne Sloan, M.S. Student in Soil Science, Project: Valuing nitrogen release from high organic matter soils (Fall 2019 – Summer 2021, co-advisor – Dr. Lisa DeVetter)

Former Postdoctoral Research Associates

• Navdeep Singh, Projects: Evaluating the contribution of soil organic carbon to improved water-holding capacity through increased compaction resistance; Skagit Basin Supply and Demand Analysis (Sept. 2020 – Dec. 2022)

Related Sites

• Google Scholar profile
• ResearchGate profile
• WSU NWREC