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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** 2023 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 nine residue food use field trials during FY23. These included seven herbicide trials and two fungicide trials. The herbicide trials (pesticide/crop) included the following: fluazifop-p-butyl/squash, glufosinate/peanut (two trials), pyridate/corn, tiafenacil/blueberry, tiafenacil/cucumber, and tiafenacil/pepper.  The fungicide trials included the following:  fludioxanil + pydiflumetofen/basil, and inpyrfluxam/tomato.    
Sixteen ornamental trials also were conducted during the year to provide phytotoxicity data for potted plants in field conditions including five herbicide trials, five fungicide trials, and six insecticide trials. The herbicide trials included the following:  oxyfluorfen + pendamethalin/hydrangea and lantana; and s-metolachlor/creeping thyme, sweet flag and yellow archangel. The fungicide trials included the following: mefentrifluconazole/loropetalum (foliar and soil); BW159/hydrangea; and XDE-659/ Japanese meadowsweet and purple coneflower. The insecticide trials included the following: BW280/hydrangea and rosemallow; BW400/hydrangea and rosemallow; and NI02ES-1/hydrangea and rosemallow.       
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.  Data books will be sent to IR-4 Headquarters within two months of completion. **Accomplishments**


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