Dan S. Long
Agricultural Research Service
71 Papers
507 Citations
Dan S. Long is an academic researcher from Agricultural Research Service. The author has contributed to research in topics: Crop yield & Normalized Difference Vegetation Index. The author has an hindex of 25, co-authored 71 publications. Previous affiliations of Dan S. Long include University of Idaho & United States Department of Agriculture.
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Papers
Remote Sensing Leaf Chlorophyll Content Using a Visible Band Index
TL;DR: The triangular greenness index (TGI) as discussed by the authors was proposed to measure the area of a triangle with vertices, where the vertices are divided into three bands: (λr, Rr), (λg, Rg), and (λb, Rb), where R is the wavelength and B is the reflectance.
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Wheat yield estimates using multi-temporal NDVI satellite imagery
TL;DR: In this article, seasonal growth profiles developed from AVHRR-NDVI for estimating wheat yield at regional and farm scales in Montana for the years 1989-1997 were examined and shown strong relationships between wheat yields and integrated NDVI over the entire growing season, and with late season NDVI parameters.
272
Broadband, red-edge information from satellites improves early stress detection in a New Mexico conifer woodland
Jan U. H. Eitel,Lee A. Vierling,Marcy E. Litvak,Dan S. Long,Urs Schulthess,Alan A. Ager,Dan J. Krofcheck,Leo Stoscheck +7 more
TL;DR: In this paper, the authors analyzed a temporally dense time series of 22 RapidEye scenes of a pinon-juniper woodland in central New Mexico acquired before and after stress was induced by girdling.
250
Combined Spectral Index to Improve Ground-Based Estimates of Nitrogen Status in Dryland Wheat
TL;DR: In this article, the performance of spectral indices for ground sensing of crop chlorophyll a+b content (C ab ) and N status in dryland wheat (Triticum aestivum L.).
Spectral considerations for modeling yield of canola
John Sulik,Dan S. Long +1 more
TL;DR: In this article, a small-plot experiment was conducted near Adams, Oregon in which spring canola was grown under varying water regimes and nitrogen treatments to create a wide range in oilseed yield.
137