Location: Southeast Watershed Research
2021 Annual Report
Objectives
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.
Approach
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.
Progress Report
ARS scientists at Tifton, Georgia, conducted eleven residue food use field trials during FY2021. These included eight herbicide trials, two fungicide trials, and one insecticide trial. The herbicide trials (pesticide/crop) included the following: acifluorfen/basil (three trials), flumioxazin + pyroxasulfone/pepper (bell), flumioxazin + pyroxasulfone /tomato(cherry), linuron/ bean(lima), s-metolachlor/mustard, and s-metolachlor/turnip. The fungicide trials included the following: fludioxonil + pydiflumetofen/peach and pyraziflumid/tomato (cherry). The insecticide trial was pyrifluquinazon/blueberry. Food Use Trials report has been submitted by ARS scientists.
Fifteen field container ornamental trials were also conducted during the year to provide phytotoxicity data for potted plants including eleven fungicide trials, three herbicide trials, and one insecticide trial. The fungicide trials included the following: F6123/phlox (two trials); fluopyram + trifloxystrobin/coneflower; flutianil/hydrangea; mefentrifluconazole/vervain (two trials); picarbutrazox/black-eyed Susan (two trials); pydiflumetofen + difenoconozole/hydrangea (two trials); and XDE-659/daylily. The herbicide trials included the following: bentazon/hydrangea; isoxaben-dithiopyr/hydrangea; and OHP1702V/boxwood. The insecticide trial was BCS991/hydrangea. All reports have been submitted. See Table below.
Ornamental Field In Container Trials
PR number: Tes stubstance: Crop: Assigned: Completed trial: Due date: Submit report.
25318; Bentazon; Hydrangea; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
33231; Picarbutrazox; Black-Eyed Susan; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
33274; Flutianil; Hydrangea; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
33285; Picarbutrazox; Black-Eyed Susan; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
33477D; Mefentrifluconazole; Vervain; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
33477F; Mefentrifluconazole; Vervain; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
33645; Isoxaben + dithiopyr; Hydrangea; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
33651; OHP1702V; Boxwood; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
33761D; Flutriafol; Phlox; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
33761F; Flutriafol; Phlox; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
34002; Fluopyram + trifloxystrobin; Black-Eyed Susan; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
34116; XDE-659; Daylily; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
34133D; Pydiflumetofen + difenoconozole; Hydrangea; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
34133F; Pydiflumetofen + difenoconozole; Hydrangea; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
34529; BCS991; Hydrangea; 2/19/2021; 6/2/2021; 8/2/2021; 8/2/2021.
Eleven greenhouse ornamental trials were also conducted by ARS scientists at Tifton, Georgia during the year to provide phytotoxicity data for potted plants including eight fungicide trials, two insecticide trials, and one nematicide trial. The fungicide trials included the following: flutianil/periwinkle (common); mandestrobin/cheddar pink and tickseed; pydiflumetofen/cheddar pink; pyriofenone/cheddar pink; SP2478/periwinkle (common); and Streptomyces noursei v. xichangenis/cheddar pink (two trials). The insecticide trials included the following: SP3014/chrysanthemum and V-10433/cheddar pink. The nematicide trial was fluazaindolizine/chrysanthemum. All reports have been submitted. See table below.
Ornamental Greenhouse Trials
PR number: Test substance: Crop: Assigned: Completed trial: Due date: Submit report.
32419; Mandestrobin; Tickseed; 11/16/2020; 1/6/2021; 3/6/2021; 5/13/2021.
32423; Mandestrobin; Cheddar Pink; 11/16/2020; 1/6/2021; 3/6/2021; 5/13/2021.
32427; Pydiflumetofen; Cheddar Pink; 11/16/2020; 1/6/2021; 3/6/2021; 5/13/2021.
33242; SP3014; Chrysanthemum; 11/16/2020; 1/6/2021; 3/6/2021; 5/13/2021.
33277; Flutianil; Common Periwinkle; 11/16/2020; 1/6/2021; 3/6/2021; 5/13/2021.
33632; V-10433; Cheddar Pink; 11/16/2020; 1/6/2021; 3/6/2021; 5/13/2021.
33696; Pyriofenone; Cheddar Pink; 11/16/2020; 1/6/2021; 3/6/2021; 5/13/2021.
34022D; Streptomyces noursei; Chrysanthemum; 11/16/2020; 1/6/2021; 3/6/2021; 5/13/2021.
34022F; Streptomyces noursei; Chrysanthemum; 11/16/2020; 1/6/2021; 3/6/2021; 5/13/2021.
34039; SP2478; Common Periwinkle; 11/16/2020; 1/6/2021; 3/6/2021; 5/13/2021.
34105; Fluazaindolizine; Chrysanthemum; 11/16/2020; 1/6/2021; 3/6/2021; 5/13/2021.
The following ornamental reports in the table below were also submitted this year.
Ornamental Field In Container Trials
PR number: Test substance: Crop: Assigned Completed trial: Due date: Submit report.
33170: Cyflumetofen: Dianthus; 1/19/2019; 6/27/2019; 8/27/2019; 3/30/2021.
33229; Picarbutrazox; Meadow Sage; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33463; Mefentrifluconazole; Bee Balm; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33464; Mefentrifluconazole; Rosemary; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33466; Mefentrifluconazole; Astilbe; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33469D; Mefentrifluconazole; Dwarf Tickseed; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33469F; Mefentrifluconazole; Dwarf Tickseed; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33470; Mefentrifluconazole; Blanket Flower; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33472; Mefentrifluconazole; Willowleaf Sunflower; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33486; Mefentrifluconazole; Juniper; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33688; Cyclaniliprole + Flonicamid; Meadow Sage; 1/19/2019; 6/27/2019; 8/27/2019; 3/30/2021.
33707; Pyriofenone; Meadow Sage; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33760D; Flutriafol; Dwarf Tickseed; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33760F; Flutriafol; Dwarf Tickseed; 1/19/2019; 6/27/2019; 8/27/2019; 3/30/2021.
33768D; Flutriafol; Black-Eyed Susan; 1/19/2019; 7/3/2019; 9/3/2019; 3/30/2021.
33768F; Flutriafol; Black-Eyed Susan; 1/19/2019; 6/27/2019; 8/27/2019; 3/30/2021.
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 by ARS scientists at Tifton, Georgia, 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). Research contributes to both the pest control technologies and chemical control of weeds components of the crop protection and quarantine national program action plan.
Accomplishments
