What is in this article?:
- Control agent identified for cotton root rot
- Economic Impact
- Over the last five years Texas cotton farmers lost an average of $29 million a year from lost cotton lint and cottonseed to CRR.
- CRR is a persistent soil-borne fungus.
- Control options have been few and far between over the past 100 years.
In support of this effort and to estimate the economic impact of the disease, Gaylon Morgan, associate professor and state Extension cotton specialist, conducted a survey of county and IPM agents to determine the percent of infested fields and the counties affected, as well as the economic impact of CRR on cotton yields at the county level. Based on responses, CRR is present in both irrigated and non-irrigated fields in South, Central and East Texas. “The total cotton production area represented in the survey was 1.93 million harvested acres over a five-year average,” says Morgan.
Of the 1.27 million non-irrigated acres covered by the responses, an average of over 21 percent was reported to have CRR, with the range of incidence from zero to 90 percent. For irrigated acres, an average of more than 19 percent of the 0.66 million acres was reported to have CRR with the same zero to 90 percent range of incidence.
“CRR is estimated to occur on over 40 percent of the acres in several counties of the Southern Rolling Plains where the CRR incidence is estimated to be over 80 percent of the combined irrigated/non-irrigated acres,” adds Morgan.
“The funding from Cotton Incorporated gave this entire project the critical mass that led us to much more expeditiously bringing this product to cotton because we were able to expand the locations of our trials,” says Isakeit.