About this Session

Update on aphid vectors, virus spread and management of Cotton leafroll dwarf virus (CLRDV) in the U.S.

Presented by: Dr. Alana Jacobson
Associate Professor of Entomology, Auburn University

Cotton leafroll dwarf disease (CLRDD), caused by Cotton leafroll dwarf virus (CLRDV), is an emerging aphid-transmitted virus in the U.S. Symptoms of this new disease include crinkling, cupping, thickening of leaves, reddening of leaf veins and petioles, dwarfing of the plant, reduced boll set, swollen and brittle stems, accentuated verticality and decreased yields. Results of research conducted in 2019-2020 will be presented to highlight what has been learned about virus spread by aphids, and the effectiveness of management strategies on reducing virus incidence and yield loss associated with this virus.

Management of Cotton Aphid and Implications for CLRDV

Presented by: Phillip Roberts
Professor and Extension Entomologist – Cotton, University of Georgia

Cotton aphid infest a high percentage of cotton acreage in the Southeast and is a potential pest of cotton in the region. The recent detection of Cotton leafroll dwarf virus (CLRDV) which transmitted by cotton aphid necessitates further investigation into the biology and ecology of cotton aphid in cotton production systems. Additionally, field trials investigated the influence of cotton aphid management on CLRDV incidence.