Purdue Agronomy Farm Soil Background (791807)
The purpose of this experiment was to determine the effects of soil
background (soil color, soil moisture, soil roughness) on the spectral
response of corn. The treatments were:
2 surface moisture levels (moist and dry)
2 surface tillage conditions (rough and smooth)
Two replications were used in a randomized complete block design.
Spectral reflectance measurements were made with a Landsat band
radiometer (Exotech 100). Radiant temperature and overhead color
photographs of the canopies were obtained simultaneously with the
reflectance measurements. Oblique color photographs were also
obtained. The agronomic measurements of the plots included crop
growth stage, percent soil cover, plant height, leaf area index, plant
biomass, and surface soil moisture and condition. Grain yields were
measured at harvest time.