Title: Winter and spring application of SPLAT-CLM for control of citrus leafminer Authors
Submitted to: Entomological Society of America Annual Meeting
Publication Type: Abstract Only
Publication Acceptance Date: June 7, 2012
Publication Date: November 13, 2012
Citation: Keathley, C.P., Stelinski, L.L., Lapointe, S.L. 2012. Winter and spring application of SPLAT-CLM for control of citrus leafminer. Entomological Society of America Annual Meeting, November 11-14, 2012, Knoxville, Tennessee, oral presentation #1041. Technical Abstract: Citrus leafminer, Phyllocnistis citrella Stainton, is active throughout the year in Florida and reproduces on periodic leaf flush in winter. We tested mating disruption in mature grapefruit trees during winter and spring using SPLAT-CLM, an emulsified wax with prolonged release of the insect’s primary pheromone component, (Z,Z,E)-7,11,13-hexadecatrienal. SPLAT-CLM was applied in 2-ha blocks in winter and/or spring using a tractor-mounted machine that dispensed 1-g dollops into the tree canopy at a rate of 500 g/ha. Mating disruption was evaluated using pheromone-baited traps, and leaf mining was evaluated on new leaf flush. Winter season treatment provided 30% trap catch disruption at 8 wk during peak moth flight. Spring treatment provided 34'61% trap catch disruption through 5 wk. Winter × spring interactions were not significant, indicating winter season treatment did not boost control in spring compared with spring application alone. SPLAT-CLM did not reduce incidence of leaf mines in this trial. Moth flight preceded widespread leaf mining, suggesting that external sources may be important for colonizing citrus groves in spring.