UNITED STATE S ENVIRONMENTAL PROTECTION AGENCY WASHINGTON D
. C ., 20460

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## JUL 07 2D15 OFFICE OF CHEMICAL SAFETY AND POLLUT I ON PREVENT I ON 

### MEMORANDUM
SUBJECT: Response to Public Com m e nts fr o m Bayer ( reg istr ant) on th e BEAD Chemical Profi les for S piro dicl ofe n a nd Spiromesifen (D P # s 427624 and 4 2762 1) 

### FROM: Nikhil Mallarnpalli, E n tomologist 

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### TO: Donald Atwood , Entomolo g is t

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C laire Pai s ley - Jones , En v ironmental Protecti o n Specialist 

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# ,.,....,., Sc ienc e and Informati on Ana lys i s Bran c h ( Biological a nd Economic Analysis Di vis ion (7503 P ) Arnet J o n es , Ch ie f 

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# ~ Sc ien ce and Informati o n A naly sis Bran c h B iolo g ica l a nd Eco n om ic Ana lys is Divi s ion (7503 P) J o lene Trujillo Biologist/Chemical Rev iew Manage r Risk Mana ge ment and Imp le ment a tion Bran c h V Pesticide R e-evaluati on Di viso n Office of Pes ti c id e Pro g ram s ( 7505 P )


### Peer Re v iew Pan el date: June 2 4 , 2015
SUMMARY Spi ro me sifen a nd spirodiclofen in sec ti cide are currently undergoing r eg i s trati o n review. In this mem ora ndum , th e Biological and Eco no mi c A n a lysis Divi s ion (BEA D ) respo nd s to commen t s rece ived from Bayer ( the reg istrant) on BE A D chemical profil es (BC P s) for these insecticides
.. Th e comments ad dr esse d a r e from B aye r C ropS c ienc e , the reg i strant fo r bo th c he mi ca ls. Bay er corrected so m e s tate m e nt s in th e BCPs regardin g registered use s it es and forrnulation m ethods. B ayer a lso provided input o n some of the d a ta nee ds id e ntifi e d b y BEAD i n it s B C Ps. BEAD Page 

### J of 2agrees with the information provided ; it should assist the registration team in future work on registration revi ew of these ins ec ticid es.
SUMMARY OF BAYER' S C OMME N TS While the registrant pro vided several comments address ing most of the Agency d oc uments in th e chemical dockets , this memorandum foc u ses only on the ones relevant to the BCP s. For spirodiclofen , Bay e r made the follow in g points relevant to the BEAD chemical profile and usage summaries: Berries ar e not a registered crop. Decline in u se beginning in 2010 may be due to two causes: an increased number of registered miticide s competing w ith spirodiclofen; 2) the recent change in commercial status of Abamectin to "ge n eric w hich has increased th e s uppl y of this mark e t-l eading miticide. There are no report s of pe s t resistance. For spiromes i fen , Bayer made the following points relevant to the BEAD chemica l profile and u sage summaries: There are no emulsifiable concentrate formulations, as mention ed in th e BCP
. Regarding the in crease in use from 2005 to 2012, Bayer proposed that this might be due to the publicity surrounding it s product laun ch and a drought that in creased use in corn in the High Plains s tates (Texas, Oklahoma, New Mexico, and Colorado). Bayer also s u gges t ed that relativ ely high usage in s trawb e rrie s, canta loupes, and eggplants ma y be due to a lack of alternatives effective against both mite s and whiteflies. Bayer also provided information on application rates and numb e r of applications per yea r in non-agricultural setti n gs, in re sponse to one of th e data requests in BEA D's BCP.


### BEAD'S RESPONSE BEAD acknowledges the e rrors in description of regis tered use si tes (for spirod ic lofen) and formulations (fo r sp iromesifen ). Futur e registration review work wi ll take these co rrections into account. BEAD also appreciates the information on application rate s and methods , as well as the discussion of why usage may have increased or declined, or remain e d relatively high in va riou s crops. This information should assist in future work on the ri s ks and benefits of each of these miticides.

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