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William R. Raun
Researcher at Oklahoma State University–Stillwater
Publications - 256
Citations - 13301
William R. Raun is an academic researcher from Oklahoma State University–Stillwater. The author has contributed to research in topics: Fertilizer & Soil water. The author has an hindex of 54, co-authored 254 publications receiving 11835 citations. Previous affiliations of William R. Raun include International Maize and Wheat Improvement Center & University of Nebraska–Lincoln.
Papers
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Journal ArticleDOI
Improving Nitrogen Use Efficiency for Cereal Production
TL;DR: The Consultative Group on International Agricultural Research (CGIAR) linked with advanced research programs at universities and research institutes is uniquely positioned to refine fertilizer N use in the world via the extension of improved NUE hybrids and cultivars and management practices in both the developed and developing world.
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Improving Nitrogen Use Efficiency in Cereal Grain Production with Optical Sensing and Variable Rate Application
William R. Raun,John B. Solie,Gordon V. Johnson,Marvin L. Stone,R. W. Mullen,K. W. Freeman,Wade Everett Thomason,E. V. Lukina +7 more
TL;DR: In this article, the validity of using in-season estimates of grain yield (INSEY) and a response index (RI) to modulate N at 1-m 2 spatial resolution was evaluated.
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In-Season Prediction of Potential Grain Yield in Winter Wheat Using Canopy Reflectance
William R. Raun,John B. Solie,Gordon V. Johnson,Marvin L. Stone,E. V. Lukina,Wade Everett Thomason,James S. Schepers +6 more
TL;DR: In this paper, the potential grain yield of winter wheat (Triticum aestivum L) was predicted using in-season spectral measurements collected between January and March, where the normalized difference vegetation index (NDVI) was determined from reflectance measurements under daytime lighting in the red and near-infrared (NIR) regions of the spectra.
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In-Season Prediction of Corn Grain Yield Potential Using Normalized Difference Vegetation Index
Randall Teal,Brenda Tubana,Kefyalew Girma,K. W. Freeman,Daryl B. Arnall,Olga S. Walsh,William R. Raun +6 more
TL;DR: In this article, the relationship between corn yield and early season normalized difference vegetation index (NDVI) sensor readings using the GreenSeeker sensor was determined using linear and nonlinear regression analysis.
Journal ArticleDOI
Use of Spectral Radiance for Correcting In-season Fertilizer Nitrogen Deficiencies in Winter Wheat
TL;DR: In this paper, spectral radiance readings for red and near-infrared (NIR) wavelengths were obtained in wheat between Feekes physiological stages 4 and 6 using photodiode-based sensors fitted with interference filters.