Ozonium Root Rot page 2

Generalized Life Cycle: ORR is present year round but it is most active and likely to be detected in summer months when air and soil temperatures are high.

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
present
						peak activity

REFERENCES:

• Prepared by Cherry Chandler, Arizona Department of Agriculture

Cotton Root Rot (Phymatotrichum omnivorum) in Low Desert ; The University of Arizona, Cooperative Extension, Maricopa County; last updated June 9, 1998; May 2004 web-site.
http://ag.arizona.edu/maric opa/garden/html/t-tips/diseases/root-rot.htm

Goldberg, Natalie P .; Phymatotrichum Root Rot, Guide A0229; Cooperative Extension Service, New Mexico State University; February 1999; May 2004 web-site.
http://www.cahe.nmsu.e du/pubs/_a/a-229.pdf
http://www.cahe.nmsu.edu/ pubs/_a/a-229.html

Olsen, Mary ; Cotton ( Texas) Root Rot; AZ1150, 2/2000; University of Arizona Cooperative Extension; May 2004 web-site.
http://ag.arizona.edu/pubs/diseases/az1150.pdf

Olsen, Mary and Jeffrey C. Silvertooth ; D iseases and Production Problems of Cotton in Arizona; Cooperative Extension, University of Arizona; published 2001; May 2004 web-site.
http://ag.arizona.edu/pubs/diseases/az1245/#prr

Phymatotrichopsis omnivora (Duggar) Hennebert, Data Sheets on Quarantine Pests ; CAB International in Association with EPPO; 1992; May 2004 web-site.
http://www.vaxteko.nu/html/sll/eppo /EDS/E-PHMPOM.HTM

Walla, Walter J. and Everett Janne, Controlling Cotton Root Rot on Ornamental Plants; TAEX L-2056, November 1982; Texas A and M University System; originally published as TAEX L-2056, November 1982; web-site.
http://aggie-horticulture.tamu.edu/plantanswers/publications/cottonrootrot/cotton.html