Mapping cotton root rot infestations over a 10-year interval with airborne multispectral imagery Conference Paper uri icon

abstract

  • Cotton root rot, caused by the pathogen Phymatotrichopsis omnivora, is a very serious and destructive disease of cotton grown in the southwestern and south central U.S. Accurate information regarding temporal changes of cotton root rot infestations within fields is important for the management and control of the disease. The objective of this study was to detect the change in cotton root rot infestations within cotton fields in south Texas over a 10-year interval. An airborne three-band image and an airborne four-band image were collected from a cotton field in 2001 and 2011, respectively. The images were georeferenced, resampled to the same pixel size and then classified into root rot-infested and non-infected classes using unsupervised image classification techniques. Both images were effective to distinguish root rot-infected areas from non-infected areas. The infested areas within each field were determined and compared between the two imaging years. Preliminary results indicate that the recurring spatial patterns of the disease were similar over the 10-year interval, though there were variations in infestation patterns over the years. These results will be useful for monitoring the progression of the disease over a longer time period and for the management and control of the disease.

published proceedings

  • American Society of Agricultural and Biological Engineers Annual International Meeting 2011, ASABE 2011

author list (cited authors)

  • Yang, C., Odvody, G. N., Fernandez, C. J., Landivar, J. A., & Nichols, R. L.

complete list of authors

  • Yang, C||Odvody, GN||Fernandez, CJ||Landivar, JA||Nichols, RL

publication date

  • January 2011