Progress 10/01/09 to 09/30/10
Outputs
Progress Report Objectives (from AD-416) The objective of this project is to examine the impact of hygroscopic feeding attractants on lethality of attracticidal spheres and determine spatial protective capacity of attracticidal spheres for the control of apple maggot fly in commercial apple orchards. Approach (from AD-416) Conduct laboratory experiments aimed at assessing residual lethality of varying concentrations of toxicant combined with feeding stimulant and feeding attractant in order to design an effective formulation for attracticidal spheres and conduct field-based experiments in commercial apple orchards to assess the efficacy of refined attracticidal spheres of the apple maggot fly. Percent injury in plots protected with attracticidal spheres will be compared with plots treated with conventional insecticides and/or with untreated plots. The overall aim of this project is to enhance the performance and commercial value of attracticidal spheres for behavioral control of apple maggot fly (AMF). The impact of inclusion of hygroscopic feeding attractants on lethality of attracticidal spheres has been evaluated. Specifically, under Obj. 1, Exp. 1, a laboratory trial which assessed residual lethality of varying concentrations of the toxicant spinosad (Entrust) combined with the feeding stimulant sucrose and the feeding attractant ammonium carbonate against AMF was completed. These results were used to generate the formulation used in subsequent experiments. Results have revealed that residue containing 10-1000 ppm ammonium carbonate (feeding attractant), 1-10% sucrose (feeding stimulant) and 10- 100 ppm spinosad (toxicant) will reliably result in 80-100% mortality within 48h. In field deployments of attracticidal spheres with cap formulations including 0.5% spinosad and 10% ammonium carbonate, spheres performed well in some commercial orchards. For the 2010 formulation, the % spinosad has been increased from 0.5 to 1.0%; field deployments will begin in late June-early July, 2010, in commercial orchards in NY and New England. The ADODR has monitored activities through emails, meetings, and calls.
Impacts
(N/A)
Publications
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Progress 01/01/09 to 02/28/10
Outputs
Progress Report Objectives (from AD-416) The objective of this project is to examine the impact of hygroscopic feeding attractants on lethality of attracticidal spheres and determine spatial protective capacity of attracticidal spheres for the control of apple maggot fly in commercial apple orchards. Approach (from AD-416) Conduct laboratory experiments aimed at assessing residual lethality of varying concentrations of toxicant combined with feeding stimulant and feeding attractant in order to design an effective formulation for attracticidal spheres and conduct field-based experiments in commercial apple orchards to assess the efficacy of refined attracticidal spheres of the apple maggot fly. Percent injury in plots protected with attracticidal spheres will be compared with plots treated with conventional insecticides and/or with untreated plots. The overall aim of this project is to enhance the performance and commercial value of attracticidal spheres for behavioral control of apple maggot fly. The impact of inclusion of hygroscopic feeding attractants on lethality of attracticidal spheres has been evaluated. Specifically, a laboratory trial which assessed residual lethality of varying concentrations of the toxicant spinosad (Entrust) combined with the feeding stimulant sucrose and the feeding attractant ammonium carbonate against apple maggot fly was completed. These results were used to generate the formulation used in subsequent experiments. Results have revealed that residue containing 10-1000 ppm ammonium carbonate (feeding attractant), 1-10% sucrose (feeding stimulant), and 10-100 ppm spinosad (toxicant) will reliably result in 80-100% mortality within 48h, respectively. In field deployments of attracticidal spheres with cap formulations, including 0.5% spinosad and 10% ammonium carbonate, spheres performed well in some commercial orchards but not others, owing to the rapid depletion of spinosad due to the hygroscopic nature of ammonium carbonate. For the 2011 formulation, the spinosad remained at 1.0% and ammonium carbonate was not included; with field deployments occurring in late June-early July in New York and New England. The ADODR has monitored activities through emails, site visits, and calls.
Impacts
(N/A)
Publications
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