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



## MEMORANDUM Date: 20-JAN-2015 OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENTION



### Subject: Sedaxane. Petition for the Establishment ofPermanent Tolerances for Seed Treatment Use on Cotton and Sugar Beet. Upda te to Summary of Analytical Chemistry and Residue Data. PC Code: 129223 Decision No.: 489552 Petition No.: 4F8263 Risk Assessment Type: NA TXRNo. : NA MRlDNo.: NA 

### DP Barcode: 0425 112 Registration No.: 100-1381, 100-RLLA Regulatory Action: Section 3 Registration Case No.: NA CAS No.: 874967-67-6 40 CFR: 

### § 180.665 

### From : William H. Donovan, Ph.D., Senior Chemist

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# ~ Risk Assessment Branch (RAB) V Health Effects Division (7509P) Through: MichaelS. Metzger, Branch Chief / 

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- Health Effects Division (7509P) · To: Driss Benmhend, Risk Manager Fungicide- Herbicide Branch Registration Division (7505P) Jennifer Urbanski, Risk Manager Invertebrate-Vertebrate Branch 3 Registration Division (7505P)
A residue chemistry summary memo for the new use request of sedaxane inion cotton and sugar beet was recently completed (D423822, W. Donovan, 19-DEC-2014). In the process of preparing the risk assessment for this action, the need for an update to the residue chemistry summary memo was identified. Accordingly, the following tables and section should replace the corresponding tables and section of the 19-DEC-201 4 memo.

Page 1 of2Sedaxane Update to Summary of Analytical Chemistry and Residue Data D425112

Table 1. Tolerance Summary for Sedaxane. Commodity Proposed Tolerance Recommended Comments; 

### Correct Commodity (ppm) Tolerance (ppm) 

### Definition Cotton, undel inted seed 0.01 0
.01 

### Cotton, undelinted seed Cotton, gin byproducts 0.01 0.01 

### Cotton , gin byproducts Beet, sugar 0.01 0.01 

### Beet, sugar, roots


## 2.2.3 Revisions to Petitioned-For Tolerances None

Table3
. 3 Summary of Directions for Proposed New Uses of Sedaxane. Formulation Application Rate Application [EPA File lb ai/1 00 lb seed Use Directions and Limitations Type Symbol No .] [g ai/1 00 kg seed] (mg ai/seed) Cotton Do not use seed for feed, foo d or oil purposes. S tore away from feeds and foodstuffs
. Following sedaxane treated seeds except potato seed pieces: All crops that have not been treated with sedaxane may be planted 30 days after planting sedaxane treated seeds. All crops treated with sedaxane may be replanted immediately with the exception ofpotato . Following potato seed pieces treated with sedaxane: 

### No sedaxane treatedpotato seeds may be planted for a 4.3 lb/gal FS 0.0027

-0.020 

### 24-month period following planting of sedaxane Seed treatment [2.7-20] 

### treated potato seed pieces. All crops treated with [100- 1347] (0.002-0.0 17) 1 sedaxane other than potato may be replanted immediately
. No sedaxane treated potato seeds may be planted for a 24-month period following planting of sedaxane treated potato seed pieces. Excess treated seed may be used for ethanol production only if(l) by

-products are not used for livestock feed and (2) no measurable residues ofpesticide remain in ethanol byproducts that are used for agronomic practice
. The maximum number ofapplications per year is 2. Sugar Beet (not allowed on sugar beets grown for seed production) 4.3 lb/gal FS 0.044-0.66 Seed treatment [44

- 660]2 As above [100- 1347] (0.0050

- 0.075) 1 Assuming an average seed size of 5,500 seeds/pound, as indicated in the Use Rate section ofthe label. However, HED assumes 4,500 seeds/pound [J. Becker and S. Ratnayake, "Acres Planted per day and Sowing Rates of Crops Grown in the U.S." 24-MAR-2011], which implies a maximum application rate of0.020 mg sedaxane/seed. 2 Calculated assuming 40000 seeds/lb. Label expresses use rate in terms offl oz and g ai per 100,000 seeds: 0.03

- 0.49 fl oz product/100,000 seeds and 0.50

- 7.5 g ai/100,000 seeds.


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