Purdue Agronomy Farm Winter Wheat Disease (801805)

<p>The purpose of this experiment was to investigate the effects of disease (rust) on the spectral response of winter wheat. There were two disease treatment levels with three replications. Each plot was 6 meters square. Measurement of reflectance and radiant temperature of the wheat canopies were made at approximately weekly intervals of two replications of the plots from the time the wheat was inoculated with rust until the wheat was ripe. Several observations were made of each plot to study the effects of varying severity levels as the disease spread throughout the plot.</p>

<p>For the Level of Factor Codes see document Level of Factor Codes (<a href="https://purr.purdue.edu/publications/1787/serve/dev/10943" onclick="window.open(this.href, 'Leveloffactorcodes', 'resizable=yes,status=no,location=no,toolbar=no,menubar=no,fullscreen=no,scrollbars=no,dependent=no'); return false;">level_factor_codes_801805.txt</a>) under the Supporting docs tab.</p>

<p>The test took place in 1980.</p>

<p>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.</p>

<p>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.</p>