Cotton Aphid Fungus Sampling Service HOMHOMEE

The colors used on the maps indicate the level of infection as seen in the samples received by the diagnostic lab. Specific critera for each designation are listed below. The results reported are limited in their scope by the number and timeliness of samples received from the participants. Please consult the specific data for each state for additional information about the number of samples processed, and the levels of infection found in each county or parish. If you have other specific questions, feel free to contact us by email or telephone. This laboratory provides diagnostic services only. This service is designed to be a tool to assist with agronomic decision making. We are unable to advise growers with specific decisions regarding spray applications. For additional help in this area, consult your local cooperative extension office or a private crop consultant.
No samples received
No samples have been received from this county for the current season. This does not mean that no fungus is present.
No fungus detected
Samples have been submitted from this county, but no fungus has yet been detected, as of the sample date. This does not mean that the fungus is not present elsewhere in the county.
Trace levels of fungus
Sample has contained a few aphids (1-9%) that are infected secondary spores (infective capilliconidia), the earliest stage of infection.
Early stages of epizootic
More infected aphids are seen (10%-25%), mostly with secondary spores, but some in the conidial stage, which begins to spread the fungus.
Fungal Epizootic
A high percentage of the aphids are infected, many in the conidial stage, and are dying of the fungus.