UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D.C . 20460 

## JAN 252012

OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENTION 

### MEMORANDUM SUBJECT: FROM:

THRU: BEAD Chemical Profile for Registration Review: Thiac10prid (014019) Colwell Cook, Entomologist

# ~&J- Biological Analysis Branch 

### Sepehr Haddad, Environmental Protection Specialist 

# IIt __ 

# I

# ~ Science Information and Analysis Branch 

# 1 

# fi" Michelle Ranville, Economist 

# 'V\l\.O.O Economic Analysis Branch U '1- 

### Biological and Economic Analysis Division (7503P) AmetJones, Chief 

# /':J**d"\J~** Biological Analysis

# Branc**~**

# "'U, Diann Sims, Chief

# ~ Science Information and Analysis Branch . () Timothy Kiely, Chief 

# 61- \}A

# l~ Economic Analysis Branch -.

### ~ . Biological and Economic AnalYSIS Division (7503P) TO: Wilhelmena Livingston, Chemical Review Manager 4 Risk Management and Implementation Branch 4 Pesticide Re-evaluation Division (7508P) 

### Product Review Panel date: January 18,2012 INTRODUCTION The purpose ofthis document is to convey usage information and a broad overview ofthe pest management roles ofpesticides that are beginning to undergo registration review. The anticipated audience consists ofthe team ofEPA staffcurrently evaluating the registration status ofthiac1oprid, and eventually the general public. This document builds upon the data already provided in the "Usage and Label Use Data Packages" that are also provided to Registration 1Review teams by BEAD. The document is based on infonnation and data available to BEAD as ofJanuary 2012. Thiacloprid is a chloronicotinoid insecticide. Its mode of action is to inhibit the nicotinic acetylcholine receptors thereby disrupting the insect's nervous system. It targets primarily sucking insects on cotton and pome fruits. The main pests are aphids and whiteflies on cotton, and pear psylla, codling moth, and plum curculio on pome fruits. (EPA 2003) 

### COMMON FORMULATIONS AND APPLICATION METHODS Thiacloprid is fonnulated as flowable concentrate and as a wettable granular. These fonnulations may be applied by ground or air as foliar sprays to cotton and pome fruits. (EPA 2003) 

### USE SITES Agricultural Use Sites Thiacloprid is labeled for use on pome fruits and cotton and was first registered in September 2003. Non-Agricultural Use Sites Thiacloprid is not registered for use on non-agricultural sites 

### USAGE Agricultural Usage Based on private market usage data from 2004-2010, usage averaged approximately 11,000 pounds active ingredient (a.i.) for 70,000 acres treated. Figure 1 presents usage ofthiacloprid over this time period and Figure 2 presents total area treated in acres. The average a.i. rate was approximately 0.16 pounds per acre. The crop with the major use in tenns ofpounds a.i. applied is apples with 91 % followed by pears with 9%. No use was reported on cotton. Figure 1 shows that usage on apples and pears has increased overall from 2004 through 2010, even though there was a dip in usage between 2006 and 2008. Figure 2 shows that acres treated are also increasing (Proprietary Data, 2004-2010).

2

### FIGURE 1. 

### Thiacloprid Usage in Pounds A.I. Applied on Apples and Pears 2004-2010 16,000 .,.------------- -----

2004 2005 2006 2007 2008 2009 2010 Years 

### Source: Proprietary Data, 2004-2010 FIGURE 2. Thiaclo**Apples**

_ Pears

100,000 .---------------------



### o**+---.---.---.---.---.---.--~** 2004 2005 2006 2007 2008 2009 2010 Years 

### Source: Proprietary Data, 2004-2010



### 3

### FIGURE 3.

16%



### Source: Proprietary Data, 2004-2010 Figure 3 presents the states with the most agricultural usage in terms ofpounds a.i. applied. These are: Washington (27%), New York (25%), Michigan (23%), Pennsylvania (16%) and Oregon (5%). The "other" category of states which comprise th, e remaining 4 % ofusage include North Carolina, Virginia, Ohio and Kansas. Another measure ofusage is the use intensity. In 

### this analysis, the use intensity is expressed as the pounds a.i. applied per acre ofland in farms. This differs from the application rate, which is expressed as the pounds a.i. applied per treated acre. Figure 4 spatially represents thiacloprid use intensity in the US. Figure 4 shows that use is relatively greater in eastern states (NY, PA, and MI) than in western states (WA, and OR) .



### 4

### FIGURE 4. Thiacioprid Usage by 

### Crop Reporting District (2006-2010)

Average Pounds Per 1,000 Acres of Fannland

. <0 . 06

. 0.06-0 .25 0 ° ·26-0 . 50 0 .51 - 1.00

. 1 .01-2 .25 N 

# !

This is a map ofagricultural pesticide usage at the Crop Reporting District (CRD) level. CRDs are boundaries created by USDA NASS which are aggregates ofcounties (USDA, 2010) . Pesticide usage is displayed as average pounds (for the years 2006-2010) per 1,000 acres offarmland in a CRD to normalize for the variation in farmland between CRDs. Farmland acreage was obtained from USDA (2007). Usage is based on private market surveys ofpesticide use in agriculture (Proprietary Data, 2006- 2010). The survey data are limited to the states that represent the top 80-90% ofacreage for the individual crops, therefore, use may be occurring in regions outside the scope ofthe survey . CRDs showing no usage ofpesticides may be due to either the lack ofpesticide use in the region or nonparticipation in the agricultural surveys . In addition, across the years, there may be variations in the specific crops included in the CRD survey . This may result in a lower annual average for the CRD. Sources: Proprietary Data. 2006-2010 USDA, 2006-2010 . NASS Crop Reporting Districts. Online : http :/ /www .ers .usda.gov!briefing/arms/ resourceregions/resourceregions .htm#nass . USDA, 2007. Census ofAgriculture. Online: http ://www .agcenslls .usda.goy/Publications/2007/index .asp . 5

### mSTORY OF BEAD ASSESSMENTS FOR THIACLOPRID BEAD has not conducted any benefits assessments or Section 18 analyses for thiac1oprid. 

### REFERENCES Proprietary Data, 2004-2010 EPA. 2003. Thiac10prid Fact Sheet. http: //www.epa.gov/opprdOOllfactsheets/thiacloprid.pdf . USDA, 2006-2010. NASS Crop Reporting Districts. Online: http://www.ers.usda.govlbriefing/arms/resourceregions/ resourceregions.htm#nass . USDA, 2007. Census ofAgriculture. Online: http://www.agcensus.usda.gov/PublicationsI2007/index.asp



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