Olga S Walsh Research Assistant Professor

academic article

• Spring wheat yield and grain quality response to nitrogen rate.  Agronomy Journal.  2022
• Pinto bean response to seeding rate and herbicides.  Weed Technology.  35:628-631. 2021
• Recap of the 2021 Western Society of Crop Science Virtual Meeting.  CSA News.  66:20-20. 2021
• Nitrogen Fertilizer Rate and Time Effect on Wheat Production.  Agrosystems, Geosciences & Environment. .  2020
• Managing a Wheat Cultivar "Egan" with Gene for High Grain Protein.  Agrosystems, Geosciences & Environment.  2:1-8. 2019
• Nitrogen Fertilizer and Residue Management on No-Till Hard Red Spring Wheat Production. .  Agrosystems, Geosciences & Environment. .  2019
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• Seeding Rate and Nitrogen Fertilizer Rate Effect on Wheat Grain Yield and Quality.  Agrosystems, Geosciences & Environment. .  2019
• Assessment of UAV Based Vegetation Indices for Nitrogen Concentration Estimation in Spring Wheat.  Advances in Remote Sensing.  2018
• Effect of Combine Use of Bacteria Bacillus subtilis and Humic Preparation on Physiological Characteristics of Tomato Plants.  International Journal of Plant and Soil Science..  2018
• Evaluation of Sensor-Based Nitrogen Rates and Sources in Wheat. .  International Journal of Agronomy. .  2018
• Nitrogen Fertilizer Management in Dryland Wheat Cropping Systems..  Plants (Basel, Switzerland).  7. 2018
• Potential of Silicon Amendment for Improved Wheat Production..  Plants (Basel, Switzerland).  7. 2018
• The Influence of Water and Nitrogen Availability on the Expression of End-Use Quality Parameters of Spring Wheat.  Agronomy-basel.  8:257. 2018
• Sensitivity of sensor-based nitrogen rates to selection of within-field calibration strips in winter wheat.  Crop and Pasture Science.  68:101-114. 2017
• Estimation of synergistic effect of humic fertilizer and Bacillus subtilis on lettuce plants by reflectance measurements.  Journal of Plant Nutrition.  39:1074-1086. 2016
• On-farm evaluation of an active optical sensor performance for variable nitrogen application in winter wheat.  European Journal of Agronomy.  74:56-67. 2016
• Environmentally Smart Nitrogen Performance in Northern Great Plains' Spring Wheat Production Systems.  International Journal of Agronomy.  2016
• Relative Efficacy of Liquid Nitrogen Fertilizers in Dryland Spring Wheat.  International Journal of Agronomy.  2016
• Winter Wheat Genotype Effect on Canopy Reflectance: Implications for Using NDVI for In-Season Nitrogen Topdressing Recommendations.  Agronomy Journal.  107:2097-2106. 2015
• Can Oklahoma Mesonet Cumulative Evapotranspiration Data Be Accurately Predicted Using Three Interpolation Methods? .  Communications in Soil Science and Plant Analysis. .  2013
• Effect of Delayed N Fertilization on Corn Grain Yields. .  Journal of Plant Nutrition.  2012
• Use of Soil Moisture Data for Refined Greenseeker Sensor Based Nitrogen Recommendations in Winter Wheat (Triticum aestivum L.)..  Journal of Precision Agriculture.  2012
• Adjusting Midseason Nitrogen Rate Using a Sensor-Based Optimization Algorithm to Increase Use Efficiency in Corn (Zea mays L.).  Journal of Plant Nutrition. .  2008
• In-Season Estimation of Grain Sorghum Yield Potential Using a Hand-Held Optical Sensor.  Archives of Agronomy and Soil Science.  53:617-628. 2007
• Weather, Fertilizer, Previous Year Yield and Fertilizer Levels Affect Ensuing Year Fertilizer Response of Wheat.  Agronomy Journal.  99:1607-1614. 2007
• Expression of Variability in Corn as Influenced by Growth Stage Using Optical Sensor Measurements.  Agronomy Journal.  99:384-389. 2007
• Bed and flat planted dryland winter wheat as influenced by row configuration.  Archives of Agronomy and Soil Science.  53:293-304. 2007
• In-Season Prediction of Corn Grain Yield Potential Using Normalized Difference Vegetation Index.  Agronomy Journal.  98:1488. 2006