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United States Department of Agriculture

Agricultural Research Service

Related Topics

Research Project: Nematode, Disease, Weed, Insect and Mite Control on Minor Food Crops and Ornamentals

Location: Crop Protection and Management Research

2013 Annual Report


1a.Objectives (from AD-416):
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.


1b.Approach (from AD-416):
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.


3.Progress Report:
The Interregional Research Project No. 4 (IR-4), Crop Protection and Management Research Unit, Tifton, Georgia, conducted sixteen residue food use field trials during FY13 including six herbicide trials, six insecticide trials, three fungicide trials, and one nitrification inhibiting trial. The herbicide trials (pesticide/crop) included the following: acetochlor/snap bean, clomazone/summer squash, flumioxazin + pyroxasulfone/sweet potato (2 trials), halosulfuron-methyl/cucumber, and indaziflam/blueberry. The insecticide trials included the following: acequinocyl/summer squash, bifenthrin/mustard, etoxazole/sweet corn, fenpyroximate/summer squash, fenpyroximate/watermelon, and zeta-cypermethrin/basil. The fungicide trials included the following: ethaboxam + fluopicolide/potato, FTH545/cucumber, and FTH545/summer squash. The nitrification inhibiting trial was nitrapyrin/leaf lettuce.

This project also conducted two efficacy and phytotoxicity food use field trials consisting of one herbicide and one fungicide trial. The herbicide trial was indaziflam/blueberry and the fungicide trial was DPX-QGU42/mustard. Twelve ornamental trials also were conducted during the year to provide phytotoxicity data for potted plants in field conditions including five herbicide trials and seven fungicide trials. The herbicide trials included the following: dimethenamid-p/hosta; oxyfluorfen + prodiamine/hosta; and sulfentrazone + prodiamine/boxwood, hosta, and pine. The fungicide trials included the following: azoxystrobin + benzovindiflupyr/boxwood; metconazole/bridal wreath (2 varieties), verbena, and vervain; and tritconazole/verbena and vervain. 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.


Review Publications
Fraelich, B.A., Scully, B.T. 2013. Evaluation of phytotoxicity of acibenzolar on fresh market bell peppers, 2011. Plant Disease Management Reports. 7:V005. DOI:10.1094/PDMR07.

Fraelich, B.A., Scully, B.T. 2013. Evaluation of phytotoxicity of quinoxyfen on fresh market tomatoes, 2012. Plant Disease Management Reports. 7:V101. DOI:10.1094/PDMR07.

Fraelich, B.A., Scully, B.T. 2013. Evaluation of phytotoxicity of quinoxyfen on fresh market tomatoes, 2011. Plant Disease Management Reports. 7:V102. DOI:10.1094/PDMR07.

Fraelich, B.A., Scully, B.T. 2013. Evaluation of phytotoxicity of acibenzolar on fresh market bell peppers, 2012. Plant Disease Management Reports. 7:V103. DOI:10.1094/PDMR07.

Last Modified: 8/19/2014
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