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ARS Home Southeast Area Charleston, South Carolina Vegetable Research Research





- Simmons, Alvin
- 2023
- 2022
- 2021
- Crop Protection & Quarantine (304)

Research Project: Coordination of Research Activities to Register Minor Use Pesticides, and Research in Food and Ornamental Crops to Support the IR-4 Program **Location:
                            Vegetable Research** 2021 Annual Report **Objectives**
                                

1. Obtain efficacy and residual data of insecticides, miticides, herbicides and fungicides on vegetable crops and ornamentals against insects and mites.

2. Provide national leadership in coordination of the minor use pesticide program in ARS; ensure compliance with all Federal GLP directives; and review, evaluate, and coordinate the development of data on efficacy, phytotoxicity, and residue data and ensure that these data are acceptable toward obtaining registrations for minor crops. **Approach**
                                

Field evaluations of insecticides, miticides, fungicides, and herbicides will be conducted on vegetable and ornamental crops. Research will be conducted according to IR-4 protocols and good laboratory practices. No specific treatments can be mentioned ahead of time because program needs change depending on industry requests. Residue samples will be assayed by appropriate federal, state, or private laboratories. **Progress Report**
                                

There is a need to develop data to support the registration of new pesticides for use on specialty food crops (fruits, vegetables, nuts, etc.) and on non-food environmental horticulture crops (floral, nursery, landscape plants, Christmas trees, etc.). Therefore, ARS researchers in Charleston, South Carolina, coordinated and conducted pesticide research on specialty crops in cooperation with other ARS sites and the IR-4 Project (previously named Interregional Research Project #4) and cooperating crop protection industries. The IR-4 Project is a national minor-use pesticide program (headquartered at North Carolina State University and Rutgers, The State University of New Jersey) that develops data required by the U.S. Environmental Protection Agency (EPA) to register pesticides on specialty crops. ARS field researchers in Charleston, South Carolina; Tifton, Georgia; Salinas, California; Wapato, Washington; and Wooster, Ohio participated in 29 IR-4 sponsored USEPA Guideline Magnitude of the Residue studies by performing 71 trials with crop protection chemicals on food crops that were initiated in 2020. In 2021, these ARS sites performed 24 studies/50 field trials. ARS scientists in Tifton, Georgia, and Wapato, Washington are contributing to IR-4 by analyzing 136 sample set of residue samples developed at various IR-4 field locations (state and federal) in 2020/2021. Also, data on the non-food environmental crops were developed by ARS researchers at Charleston, South Carolina; Corvallis, Oregon; Tifton, Georgia; Wapato, Washington; Wooster, Ohio; and ARS state cooperators at Rutgers University; these researchers established 143 pesticide/crop combinations to treat ornamental plants with pesticides for crop safety assessment in 2021.

ARS researchers in Charleston, South Carolina developed information on potential new uses for target compounds in cooperation with the IR-4 Project for research on fungicides that were completed for 5 food crop residue studies (cantaloupe, bell pepper, mustard greens, peanut, and tomato). Also, 15 fungicides performance trials were completed for studies on ornamental crops (arborvitae, butterfly bush, daylily, Boston fern, hydrangea, jasmine, rose, bottlebrush, burning bush, camellia, and phlox). Results from this work are being used to support the registration of needed pesticides on specialty crops, and many of these pesticides will subsequently be available for use by growers. **Accomplishments**
                                

1. Registration of pesticides for food, nursery, and floral crops. ARS researchers in Charleston, South Carolina, conducted pesticide research on specialty crops in cooperation with the IR-4 Project (previously named Interregional Research Project #4) and cooperating crop protection industries. The IR-4 Project is a national minor-use pesticide program (headquartered at North Carolina State University and Rutgers University) that develops data required by the U.S. Environmental Protection Agency (EPA) to register pesticides on specialty crops. The IR-4 Project is the primary entity in the U.S. to facilitate registrations of conventional pesticides and bio-pesticides on specialty Registration of pesticides for food, nursery, and floral crops.


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