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United States Department of Agriculture

Agricultural Research Service

Related Topics

Research Project: Minor Use Pesticide Testing on Vegetables and Sugar Crops

Location: Crop Improvement and Protection Research

2012 Annual Report


1a.Objectives (from AD-416):
Conduct laboratory and field tests to provide residue data to establish a tolerance on a specific commodity or to support a crop group tolerance. [NP 304, C2, and PS 2B].


1b.Approach (from AD-416):
Research to suppport registrations of minor use pesticides. Apply peticicdes according to IR-4 protocol guidelines. Obtain performance data, phytotoxicity, yield and efficacy from treated and untreated field plots. Ship samples to laboratories for residue analyses. Protocols will be employed using appropriate Standard Operating Procedures and conducted under provisions outlined in 40CFR part 160 in accordances with EPA's Laboratory Practice Standards.


3.Progress Report:
Field trials were conducted on 18 projects according to an approved protocol developed by IR-4 Project Headquarters and following local good agricultural practices for the production of the test plants. The field tests include strawberries, cool season vegetables, herbs and cane berries. A variety of pesticides were evaluated: one nematicide, three herbicide, five fungicide and nine insecticide trials.

Commercially acceptable minor crops were grown and sprayed according to the protocols with various test substances using small plot sprayers that simulate commercial application equipment. Crops were frequently monitored for phytotoxicity from application treatments and timing. Residue samples were collected at harvest and frozen until shipment to a designated laboratory for residue analysis.

Four of the FY12 trials were joint USA and Canadian studies on asparagus, basil and cane berries. These projects will establish international maximum residue level tolerances acceptable to US Environmental Protection Agency and the Organization for Economic Cooperation and Development. The purpose of these studies was to reduce or eliminate pesticides as a trade barrier for export of US produced specialty crops.

Herb projects were undertaken on chives, basil and rosemary for both fresh and dried samples. Two insecticides, Evergreen and Movento, were sprayed on chives to control various insect pests. Basil was tested with a new fungicide, DPX-QGU42, for control of downy mildew. The herbicide Treflan was applied on rosemary plants to help with weed control.


Last Modified: 7/25/2014
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