Location: Southeast Watershed Research2022 Annual Report
To evaluate the effectiveness and phytotoxicity of nematicides, fungicides, herbicides, insecticides, and acaricides on minor food crops and ornamentals in the southern U.S., and to generate samples for analysis of pesticide residues to be used in registering pesticides on minor food crops and ornamentals.
Field and/or greenhouse tests will be conducted under good laboratory/field procedures to determine the effects of pesticides on pests of minor food crops and ornamentals. Nematode, disease, weed, insect, and mite population densities will be monitored in treated and untreated plots and pest damage, crop response and yields will be recorded. Mature fruit and/or plant parts will be harvested, shipped to designated laboratories, and analyzed for pesticide residues. Plant species, pesticides and treatment rates are determined by IR-4 Minor Use Pesticide protocols. Data will be summarized, analyzed, and reports will be submitted to IR-4 Headquarters to support registration and reregistration of pesticides on minor food crops and ornamentals.
The IR-4 Project, Southeast Watershed Research Unit, Tifton, Georgia, conducted seven residue food use field trials during spring of FY22. Two more will be conducted starting in September of FY22 for a total of nine trials. These included seven fungicide trials, one nematicide trial, and one herbicide trial. The fungicide trials (pesticide/crop) included the following: cyazofamid/turnip, dimethomorph + ametoctradin/basil, inpyrfluxam /cantaloupe, inpyrfluxam/cucumber, inpyrfluxam/squash, sulfur dioxide/ sweet potato, and thiophanate methyl/radish. The nematicide trial was fluazaindolizine/radish. The herbicide trial was cycloate/spinach. All reports have been submitted. Food Use Trials (2022) PR Number: Test substance: Crop: Received protocol: Shipped samples: Due date: Submit report. 11568; Thiophanate methyl; Radish; 2/28/2022; 5/9/2022; 7/18/2022; 7/14/2022 13169; Fluazaindolizine; Radish; 3/16/2022; 5/9/2022; 7/26/2022; 7/14/2022 The reports in the table below for 2021 food use residue trials were submitted after the FY2021 annual report was submitted. Food Use Trials (2021) PR number: Test substance: Crop: Received protocol: Shipped samples: Due date: Submit report: 12831; Pyrifluquinazon; Blueberry; 3/19/2020; 6/14/2021; 8/14/2021; 8/14/2021 11772; Linuron; Lima bean; 1/15/2021; 7/15/2021; 9/15/2021; 9/15/2021 12576; Flumioxazin + pyroxasulfone; Tomato (cherry); 02/16/2021; 6/21/2021; 8/21/2021; 8/21/2021 12577; Flumioxazin _ pyroxasulfone; Pepper (bell); 2/16/2021; 6/21/2021; 8/21/2021; 8/21/2021 12791; Acifluorfen; Basil; 1/15/2021; cancelled; 9/21/2021; 9/21/2021 12791; Acifluorfen; Basil; 4/20/2021; cancelled; 9/21/2021; 9/21/2021 12791; Acifluorfen; Basil; 5/13/2021; cancelled; 9/21/2021; 9/21/2021 12817; S-metolachlor; Mustard; 1/15/2021; 10/21/2021; 12/21/2021; 12/14/2021 12972; Fludioxonil + pydiflumetofen; Peach; 5/11/2021; 7/21/2021; 9/21/2021; 9/21/2021 13076; Pyraziflumid; Tomato (cherry); 3/4/2021; 6/21/2021; 8/21/2021; 8/21/2021 Twelve field container ornamental trials were also conducted during the year to provide phytotoxicity data for potted plants including seven fungicide trials, four herbicide trials, and one insecticide trial. The fungicide trials included the following: florylpicoxamid/boxwood; fluopyram + trifloxystrobin/hosta; mefentrifluconazole/hosta (two trials), St. John’s wort, viburnum (David) ; and TDA-NC-1/hydrangea. The herbicide trials included the following: flumioxazin + prodiamine/viburnum; prodiamine + isoxaben/phlox; and s-metolachlor/phlox and raspberry (creeping). The insecticide trial was BCS991/hydrangea. All reports have been submitted. See Table below. Ornamental Field In Container Trials PR number: Test substance: Crop: Assigned: Completed trial: Due date: Submit report 33364; S-metolachlor; Phlox; 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022 33474; Mefentrifluconazole; St. John’s wort; 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022 33481; Mefentrifluconazole; Viburnum (David); 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022 33661; Flumioxazin + prodiamine; Viburnum; 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022 33975; TDA-NC-1; Hydrangea; 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022 34004D; Fluopyram + trifloxystrobin; Hosta; 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022 34078D; Mefentrifluconazole; Hosta; 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022; 34078F; Mefentrifluconazole; Hosta; 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022 34342; Florylpicoxamid; Boxwood; 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022 34529; BCS991; Hydrangea; 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022 34812; Prodiamine + isoxaben; Phlox; 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022 34878; S-metolachlor; Raspberry (creeping); 1/19/2022; 6/6/2022; 8/6/2022; 8/5/2022 These trials provide residue, efficacy and phytotoxicity data for numerous pesticide and crop combinations and will be used to support registration or re-registration of reduced risk pesticides on minor use food crops. All magnitude of residue trials were conducted in compliance with the Good Laboratory Practice Standards issued by the Environmental Protection Agency under the Federal Insecticide, Fungicide and Rodenticide Act (40 CFR Part 160). Our research contributes to both the pest control technologies and chemical control of weeds components of the crop protection and quarantine national program action plan.