The purpose of this experiment is to investigate the effects of disease and nitrogen fertilization on the spectral and agronomic characteristics of winter wheat. There were three nitrogen fertilizer rates (0, 46, and 92 kg/hectare), and three disease treatments (resistant cultivar, susceptible cultivar, and susceptible treated with fungicide) with three replications in a randomized complete block design. Measurements of reflectance and radiant temperature of the wheat canopies were made with the Exotech 20C spectroradiometer system and the Exotech 100 Landsat band radiometer system at approximately weekly intervals from tillering through ripe stages of development. Agronomic characterizations of the canopies included: leaf area index, biomass, percent soil cover, height, lodging, disease severity, leaf nitrogen concentration, and grain yield

Spectrometer data: 791806.001.txt
Radiometer data: 791806.051.txt

The test took place in 1979.

The supporting docs include a brief summary of used instruments, a wavelength table (Wavelength_ASCII.txt), reflectance note and reflectance tables (ReflectanceTable206.txt and ReflectanceTableMulti.txt), and file format description (ExperimentDataFormat3.txt). The format description file is in ASCII format in lines of 80 characters.

This research dataset is part the Field Research Data Library that consists of over 200,000 spectral observations of soils and vegetation that have been collected since 1972 till 1991 as part of the research focused on vegetation and soils at the Laboratory for Applications of Remote Sensing (LARS) located at the Purdue University.

Researchers should cite this work as follows:

• Craig S. T. Daughtry (2015). Purdue Agronomy Farm Winter Wheat (791806). Purdue University Research Repository. doi:10.4231/R7639MPC

  BibTex | EndNote

1. Agriculture
2. Agronomy (Dept)
3. Crops
4. Crop Science
5. Exotech 100
6. Exotech 20C-SW
7. LARS
8. radiometer
9. Remote Sensing
10. soil
11. Soil Science
12. spectral observations
13. spectrometer
14. winter wheat

• Location: Purdue Agronomy Farm, West Lafayette, IN
• County: Tippecanoe
• Latitude/Longitude: 0402813N 0865927W
• Illumination: Solar
• Experiment Type: Crops - Winter Wheat, Soil
• Spectrometer: Exotech 20C-SW (Wavelength Range: 0.40-2.40 um)
• Landsat MSS Band Radiometer: Exotech 100 (Wavelength Range: 0.50-1.10 um)