Start Date: Jan 01, 2013
End Date: Dec 31, 2013
1) Airborne multispectral imagery will be collected using a two-camera imaging system from fungicide-treated and untreated fields on a biweekly basis from early June to early August in the Corpus Christi area and from late July to late September in the San Angelo area. Images will be taken at 3050 m (10000 ft) above ground level in four flight lines with a 30-40% forward overlap. The images will be georeferenced and then classified into root rot-infected and non-infected zones using unsupervised and supervised classification techniques; 2) The georeferenced images will be mosaicked to document the extent and severity of root rot damage within fungicide-treated and untreated fields in both study areas; and 3) Fields previously imaged will be used to evaluate the efficacy of the treatments by comparing the change in infection between the current year and previous years. The small-plot experiments will be used to evaluate the differences in cotton root rot control among different treatments. Multiple study sites in the Corpus Christi and San Angelo areas will be established and different combinations of application rates and methods will be used.