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ARS Home Southeast Area Tifton, Georgia Southeast Watershed Research Research





- Pisani, Oliva
- 2023
- 2022
- 2021
- Crop Protection & Quarantine (304)

Research Project: Nematode, Disease, Weed, and Mite Control on Minor Food Crops and Ornamentals **Location:
                            Southeast Watershed Research** 2022 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**
                                

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. **Accomplishments**


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