University of Arizona

Information Requests



IPM Logo



How to Submit Comments to EPA

The Arid Southwest IPM Network is a function of the Arizona Pest Management Center at University of Arizona. We work as part of a team of Comment Coordinators throughout the West, who develop and submit comments on federal pesticide registration issues on behalf of stakeholders, in coordination with the Western IPM Center.

Under federal law, the Environmental Protection Agency (EPA) is required to continually review registered pesticides to evaluate potential risks to human health and the environment. As part of this process, EPA actively solicits stakeholder input at several stages of the registration review process. The Arid Southwest IPM Network serves as the primary information source for USDA, EPA, and other federal, state and regional interests regarding pest management issues in our multi-state area, which includes Arizona, Nevada, New Mexico, Colorado, and the southeastern desert region of California.   

Federal agencies often request information on current pest management practices (including pesticide use) in a particular crop to inform decision-making processes, such as re-registration of pesticides through the Food Quality Protection Act (FQPA). Information requests regarding pest management in the arid southwest are funneled through the Arid Southwest IPM Network. We have built an expanding list of contacts, including researchers, growers, pest control advisors, farm managers and Cooperative Extension personnel in our multi-state area. This network facilitates timely and accurate responses to pest management information requests that reflect current practices and growers needs for safe and effective pest management tools.


Product/Active Ingredient/Topic Affected Crops/Areas Request Date Reply Date
2,4-D All registered crops 1/6/2009 PDF, 149KB 2/23/2009 PDF, 110KB
2,4-DB Alfalfa 4/8/2019 6/7/2019 PDF, 119KB
Acephate Benefits of Acephate for Lygus Control in Arizona Cotton Production n/a National Cotton Council Response (12/24/2000)
Acephate Cotton, Head Lettuce, Celery, Cauliflower, Beans, Chile Peppers in Arizona and New Mexico 7/23/2018 8/22/2018
Acibenzolar Spinach, Chiles, other crops 1/23/2014 PDF, 181KB 2/21/2014 PDF, 76KB
Acrolein Oranges 1/3/2007 PDF, 183KB 1/29/2007 PDF, 110KB
Avitrol (4-aminopyridine) Bird control around structures, feed lots, airports, land fill sites, and in California for protecting vineyards and sprouting agricultural seeds 8/1/2007 PDF, 86KB 8/22/2007 PDF, 90KB
Bt Resistance Resistance in Lepidopteran Pests to Bt Plant-Incorporated Protectants s In The United States (EPA Docket EPA-HQ-OPP-2017-0617) 4/11/2018 PDF, 833KB
Charge Questions (7/20/2018) PDF, 111KB
NCSAPMWG Response (6/18/2018) PDF, 265KB
Buprofezin Cotton, melons, lettuce, citrus, other crops 7/10/2012 PDF, 124KB 9/10/2012 PDF, 406KB
Buprofezin Cotton, melons, lettuce, cole crops, Response to EPA Proposed Interim Decision 3/18/2019 PDF, 1.8MB 5/17/2019 PDF, 111KB
Carbaryl Floriculture uses 5/6/2008 PDF, 92KB 5/19/2008 PDF, 68KB
Carbaryl Pecans, other crops OPMP Request 8/17/2016 PDF, 98KB 9/30/2016 PDF, 119KB
Chemigation All registered crops 12/22/2008 PDF, 128KB 3/6/2009 PDF, 58KB
Chloroneb cotton, beans, peanuts, sugarbeets, turf 8/17/2011 PDF, 58KB 9/29/2011 PDF, 96KB
Chlorpyrifos Alfalfa, corn, cotton, sorghum, pecans, broccoli and other crops 11/6/2015 1/5/2016 (APMC) PDF, 5.6B
1/3/2016 (Palumbo) PDF, 5.6B
Chlorpyrifos alfalfa, corn, sorghum, cole crops 11/17/2016 PDF, 233KB 1/17/2017 (APMC) PDF, 141KB
1/12/2017 PDF, 489KB
Cymoxanil Draft risk assessment. Crops: Lettuce, Spinach, onions, onion for seed 11/29/2016 7/26/2017 PDF, 123KB
DDVP (Dichlorvos) Animal Treatment - Dairy Cattle, Beef Cattle, Swine, Poultry (Laying Hen), and Poultry (Broilers); Animal Premises - Dairy Barns, Poultry Houses, Feedlots; Manure - Livestock and Poultry 7/13/2007 PDF, 94KB 7/27/2007 PDF, 103KB
Dicrotophos Cotton 7/30/2014 PDF, 84KB 11/10/2014 PDF, 632KB
Dimethoate Alfalfa, asparagus, corn, cotton, grapefruit, oranges, peanuts, pears, safflower, sorghum, soybeans, tobacco, wheat, spring wheat 1/9/2006 PDF, 45KB 1/20/2006 PDF, 57KB
Dimethoate All registered crops 8/4/2006 PDF, 6.4MB 9/14/2006 PDF, 44KB
Dimethoate Reregistration Review (All Crops) 12/18/2009 PDF, 84KB 3/1/2010 PDF, 110KB
Dimethomorph Draft risk assessment. Crops: Lettuce, Spinach, onions, onion for seed 11/29/2016 7/26/2017 PDF, 123KB
Endosulfan MOA between EPA and Registrants regarding the registration of pesticide products containing endosulfan PDF, 3.9MB July 22, 2010  
Endosulfan EPA Impact Assessments on Endosulfan; Request for Comments and Additional Information on Importance of Use 5/6/2009 PDF, 52KB 7/6/2009 PDF, 545KB
Endosulfan Petitions requesting revocation of tolerances and cancellation of uses for endosulfan, Docket ID #EPA-HQ-OPP-2008-0615 8/12/2008 PDF, 61KB 10/20/2008 PDF, 96KB
Endosulfan Risk Mitigation Measures Multiple crops 10/11/2007 PDF, 91KB no comments
Endosulfan Cotton 11/6/2002 PDF, 139KB 12/4/2002 PDF, 216KB
9/29/2006 PDF, 931KB
Ethephon Response to EPA Proposed Interim Decision; Golf Course turf uses in AZ and CA 5/25/2017;
Ethephon docket
9/22/2017 PDF, 1.6MB
Etoxazole (EPA-HQ-OPP-2014-0133) cotton, corn 9/30/2019 11/30/2019 PDF, 123KB
Fenamidone Vegetable crops including leafy vegetables, cole crops & peppers, root crops (carrots, garlic, turnip, onions) 3/31/2014 PDF, 284KB 5/15/2014 PDF, 61KB
Flonicamid (EPA-HQ-OPP-2014-0777) cotton, alfalfa seed, lettuce, spinach, cole crops, brassica seed, other vegetables 11/18/2019 1/17/2020 PDF, 131KB
Fludioxonil Potato, Melons, Lettuce in Arizona 12/15/2017 2/13/2018 PDF, 61KB
Flumioxazin Alfalfa, Cotton, Beans, Grapes, Pecans & Pistachios, Turf & Landscape, Aquatic uses 5/13/2019 8/12/2019 PDF, 115KB
Fluopicolide Chile Peppers in New Mexico 12/15/2017 2/13/2018 PDF, 61KB
Glufosinate Cotton, Pecans 6/23/2016 PDF, 2.5MB 9/12/2016 PDF, 111KB
Imazalil Lemons 1/23/2014 PDF,182KB 3/24/2014 PDF, 80KB
Imidacloprid Citrus 1/8/2016 4/14/2016 PDF, 115KB
Imidacloprid Cotton 3/5/2009 PDF, 28KB 3/9/2009 PDF, 82KB
Imidacloprid Many crops 9/13/2017 11/13/2017 PDF, 70KB
Linuron celery, carrots, parsnips & cilantro 11/29/2016 PDF, 233KB 1/31/2017 PDF, 102KB
Linuron celery, carrots, parsley, parsnips & cilantro 7/31/2019 9/30/2019 PDF, 119KB
Malathion Public health uses 1/19/2012 PDF, 107KB 2/13/2012 PDF, 68KB
Malathion Reregistration Review (All Crops) 4/1/2013 PDF, 47KB 5/26/2013 PDF, 83KB
Maneb Reregistration Review (All Crops) 5/26/2010 PDF, 45KB 5/16/2010 PDF, 114KB
Mefenoxam Draft risk assessment. Crops: Lettuce, Spinach, onions, onion for seed, melons, chile pepper 11/29/2016 7/26/2017 PDF, 123KB
Mepiquat Chloride and Mepiquat Pentaborate Cotton 8/3/2017 10/2/2017 PDF, 123KB
Metaldehyde Several crops, slugs would be the target pests 4/11/2007 PDF, 72KB 4/27/2007 PDF, 82KB
Metaldehyde/Iron Phosphate Several crops, slugs would be the target pests 12/12/2006 PDF, 58KB not available
Metam sodium Melons 11/30/2018 PDF, 58KB 3/15/2019 PDF, 112KB
Methomyl Grapes 8/27/2002 PDF, 223KB no comments
Methomyl and Thiodicarb Lettuce and Onions 4/8/2019 6/7/2019 PDF, 168KB
Methomyl and Thiodicarb Sweet corn, head lettuce 2/21/2007 PDF, 57KB 3/6/2007 PDF, 207KB
Methoxyfenozide Proposed interim decision. Crops: field corn, sweet corn 5/25/2017 7/23/2017 PDF, 104KB
Neonicotinoids (Clothianidan, Dinotefuran, Imidacloprid, Thiamethoxam) Draft ecological risk assessments for neonicotinoids. Crops: lettuce, cole crops, celery, melons, chile pepper, pecan, corn, potatoes, turfgrass for recreational use 5/25/2017 7/24/2017 PDF, 143KB
Nicotine Any crops on which nicotine is applied (nursery and ornamental crops are about the only ones where nicotine seems to be important) 5/8/2007 PDF, 51KB 5/26/2007 PDF, 53KB
Nonregulated Status of GE Cotton for Insect Resistance Cotton 9/26/2019 11/25/2019 PDF, 750KB
Oxamyl Watermelons 8/7/2009 PDF, 84KB 8/20/2009 PDF, 60KB
Oxamyl Cotton, Chile Peppers 9/13/2017 11/13/2017 PDF, 172KB
Oxamyl Cotton, aerial applications, response to EPA Proposed Interim Decision 8/8/2018 12/9/2018 PDF, 283KB
Paraquat dichloride (EPA-HQ-OPP-2011-0855) cotton, alfalfa seed, pecans and pistachios 10/16/2019 12/16/2019 PDF, 123KB
Pendimethalin Alfalfa, Cotton, Wheat, Melons, Carrots, other crops 9/22/2017 11/21/2017 PDF, 115KB
Prodiamine Ditches and ditch banks 8/19/2011 PDF, 53KB 9/1/2011 PDF, 62KB
Prometryn Cotton, Celery, Fennel, Cilantro, Parsley Carrots 9/13/2017 11/13/2017 PDF, 115KB
Prometryn Celery, Parsley, cilantro, fennel, and carrots; Response to Proposed Interim Decision 8/8/2018 10/9/2018 PDF, 111KB
Pyraclostrobin Lettuce, cotton, wheat, corn, peanuts, chilis, others 6/30/2014 PDF, 158KB 8/25/2014 PDF, 109KB
Pyrethroids (Bifenthrin, Cyfluthrins (& beta), Zeta-cypermethrin, Gamma-cyhalothrin, Lambda-cyhalothrin, Permethrin) Draft risk assessments for pyrethroids. Crops: alfalfa, other field crops, sweet corn, Chile pepper, pecan 11/29/2016 APMC 7/7/2017 PDF, 173KB
Palumbo 7/7/2017 PDF, 1.5MB
Pyriproxyfen Aerial applications in cotton 2/13/2018 6/4/2018 PDF, 111KB
Quinoxyfen Melons and Lettuce in Arizona, Chile Peppers in New Mexico 12/15/2017 2/13/2018 PDF, 173KB
Siduron (Tupersan) Turf including golf courses, athletic fields, sod farms and grass grown for seed 12/5/2006 PDF, 87KB not available
Siduron RED Siduron Reregistration Eligibility Decision (RED). All notices, public responses, and related information on the Regulations.gov website N/A N/A
Soil fumigants (Chloropicrin, Dazomet, Methyl Bromide, Metam Potassium, and Metam Sodium) Cantaloupes, carrots, cucumbers, eggplant, forest seedlings, nursery crops, onions, orchard replant (California), peanuts, peppers, potatoes, squash, strawberries, sweet potato, tobacco, tomatoes, watermelon 3/12/2007 PDF, 198KB 4/5/2007 PDF, 102KB
4/25/2007 PDF, 132KB
Spinosyn insecticides: Spinosad & Spinetoram lettuces, spinach, cole crops, celery, arugula, other vegetable crops and citrus (including organic production) 9/19/2016 (PDF, 214KB) 11/18/2016 (PDF, 327KB)
11/17/2016 (PDF, 766KB)
Spirotetramat (Movento) lettuce, desert vegetable crops, cotton 1/14/2010 (PDF, 104KB) APMC - 2/8/2010 (PDF, 376KB)
ADA - 2/8/2010 (PDF, 32KB)
Sulfonylurea herbicides Wheat, barley, corn, grasses and other crops 7/25/2015 9/12/2016 (PDF, 147KB)
Sulfoxaflor Pesticide Registration Application 12/22/2010 Palumbo - 2011 (PDF, 2MB)
Sulfoxaflor public comment on conditional registration for several crops 1/14/2013 (PDF, 427KB) Palumbo - 2/8/2013, (PDF, 708KB)
APMC - 2/12/2013 (PDF, 501KB)
Sulfoxaflor Proposed registration of sulfoxaflor on selected crops 5/17/2016 (PDF, 979KB) Palumbo - 6/12/2016 (PDF, 823 KB)
APMC - 6/17/2016 (PDF, 805KB)
Sulfoxaflor State of Arizona Section 18 Specific Exemption for Use of Transform WG to Control Sugarcane Aphid in Sorghum spp. (approved for use period: 1 May - 30 November 2016, 1 May - 30 November 2017, 1 May - 30 November 2018) Section 18 application (approved) (PDF, 8MB)

UA Letter of Support (PDF, 1MB)
ADA ACTIVE 2018 Section 18 Permit form (PDF, 176KB)
OBSOLETE 2017 form (PDF, 29KB)
OBSOLETE 2016 form (PDF, 29KB)
Sulfoxaflor State of Arizona Specific Section 18 Exemption Application (approved) for use of Transform WG in cotton for Lygus control (approved for use periods: 1 June - 31 October 2017, 1 June - 31 October 2018) Approved Request for Section 18 (PDF, 3.9MB) ADA ACTIVE 2018 Permit form (PDF, 179KB)
OBSOLETE 2017 form (PDF, 34KB)
Thiodicarb Cotton, sweet corn, soybeans, leafy vegetables, cole crops, ornamentals and other minor use crops 12/21/2009 PDF, 129KB 2/16/2010 PDF, 456KB
Thiophanate methyl Melons, tree fruit, nuts (pecans and pistachio), tuber crops, beans, other crops 3/31/2014 PDF, 282KB 5/15/2014 PDF, 62KB
Quinoxyfen Melons, Lettuces, Chiles 1/23/2014 PDF, 184KB 2/21/2014 PDF, 80KB

Topical Requests Crops Affected or other information    
Certification of Pesticide Applicators Rule Revision EPA call for public comment on proposed changes to certification and training requirements for applicators, Docket ID: EPA-HQ-OPP-2011-0183 8/25/2015 PDF, 614KB 1/23/2016 PDF, 119KB
Columbia Adoptions maximum residue limits (MRLs) The republic of Columbia announces maximum residue limits for imported produce: World Trade Organization (WTO) notification of Columbia's adoption of MRLs PDF, 94KB
Republic of Columbia Resolution on Maximum Residue Limits for Pesticides PDF, 800KB
10/26/2007 PDF, 107KB no comments
EPA Enforcement Priorities, FY 2011-13 Related documents:
Background Paper: Worker Protection Standard PDF, 31KB
Background Paper: Pesticide Use at Day Care Facilities PDF, 27KB
1/4/2010 PDF, 177KB 1/19/2010 PDF, 17KB
Greenhouse production of peppers IR-4 Inquiry regarding Southwest commercial greenhouse production of peppers 1/28/2011 PDF, 82KB 2/8/2011 PDF, 82KB
Pollinator Services EPA request for public comment on proposed label changes for 76 Active Ingredients when used on crops with contracted pollinator services 5/28/2015 8/28/2015 PDF, 512KB
Registration review data needs All crops 11/3/2008 PDF, 174KB 11/25/2008 PDF, 103KB

For more information, contact Al Fournier at fournier@cals.arizona.edu.






Privacy Statement
Copyright 2006 University of Arizona,
College of Agriculture and Life Sciences
Webmaster: Al Fournier (fournier@cals.arizona.edu)

The University of Arizona
Maricopa Agricultural Center
37860 W. Smith-Enke Road
Maricopa, AZ 85138
(520) 374-6240