Chlorpyrifos - Registration of Special Local Need Labeling 6/02
Chlorpyrifos - Registration of Special Local Need Labeling for
Lorsban-4E and Lorsban 15G 6/02
New York State Department of Environmental Conservation
Division of Solid & Hazardous Materials
Bureau of Pesticides Management
Pesticide Product Registration Section
625 Broadway, Albany, New York 12233-7257
Phone 518-402-8768 FAX 518-402-9024
June 21, 2002
RETURN RECEIPT REQUESTED
Raymond S. Brinkmeyer, Ph.D.
State Regulatory Leader
Regulatory Success - Americas
Dow AgroSciences LLC
9330 Zionsville Road
Indianapolis, Indiana 46268-1054
Dear Dr. Brinkmeyer:
Re: Registration of Special Local Need Labeling for Lorsban-4E (EPA Reg. No. 62719-220) and Lorsban
15G (EPA Reg. No. 62719-34)
The Department has reviewed your application, received June 21, 2002, to register Special Local Need
(SLN) labeling for Lorsban-4E (EPA Reg. No. 62719-220) and Lorsban 15G (EPA Reg. No. 62719-34) in New York
The SLNs allow only one application of either product on snap beans for the control of seed maggots at a
maximum application rate of one pound of chlorpyrifos per acre.
The Department has received numerous letters which expressed the need for the use of Lorsban on snap
beans for the control of seed maggots.
Seed maggots, which include the seedcorn maggot and the bean seed maggot, are sporadic but potentially
devastating pests of snap beans. Plants become misshapen, stunted or killed as larvae feed on the seed, roots and/or
stem. Seed maggots may feed on several seeds and plants, or both, during its lifetime and can be present in the soil
before the crop is planted. There may be 3 to 5 generations per year in New York State. High infestations of seed
maggots are often associated with conventionally managed fields in which organic material is actively decaying and when
conditions are cool and wet and the field is poorly drained. These conditions have been prevalent this spring and some
fields have as much as 80-90% damage by seed maggots. To minimize risk of seed maggot damage, virtually all growers
plant their acreage with insecticide-treated seed.
The standard product of choice has been Lorsban 50-SL. All seed is treated by the seed company and
growers order the seed in January.
However, in light of problems with black bean aphids and potato leafhoppers in 2001, New York State snap
bean growers elected to have their seed treated with imidacloprid instead of chlorpyrifos. Imidacloprid is purported
to have activity against seed maggots, aphids and leafhoppers. Therefore, given the data available, the decision to
switch from chlorpyrifos- to imidacloprid-treated seed seemed very logical. Unfortunately, the imidacloprid seed
treatment has not been effective for controlling the high populations of seed maggots many growers have faced this
spring and will continue to battle through mid-summer. It is unclear whether this control failure is due to the
unusually high populations of maggots or whether these insects have developed some resistance to imidacloprid.
The best option for maggot control, at this point in time, is the use of Lorsban-4E or Lorsban 15G as a
soil treatment. The use of Lorsban-4E or Lorsban 15G as a soil treatment should provide protection of New York State's
snap bean fields from seed maggots.
Due to the urgent timing of the requested Lorsban-4E or Lorsban 15G application, Special Local Need
registrations are needed.
Therefore, under the authority of Section 24(c) of FIFRA, the Department hereby
grants Special Local Need registrations for Lorsban-4E (EPA Reg. No. 62719-220) and Lorsban 15G (EPA Reg. No. 62719-34)
which allow one application on snap beans for the control of seed maggots. Lorsban-4E (EPA Reg. No. 62719-220) is
assigned the registration number
SLN No. NY-020002. Lorsban 15G (EPA Reg. No. 62719-34) is assigned the registration number SLN No. NY-020003. Both
SLN registrations expire December 31, 2002.
The SLNs allow use on snap beans only. All precautionary statements, applicable use directions, use
precautions and limitations of the labeling affixed to the Lorsban-4E and Lorsban 15G containers must be
The product, Lorsban-4E (SLN No. NY-020002), is classified as a federally "RESTRICTED USE PESTICIDE," and
as noted on the "restriction" column on the certificate, is classified as "restricted use" in New York State.
As such, this product is restricted in its purchase, distribution, sale, use, and possession in New York
According to New York State Department of Environmental Conservation Regulations 6NYCRR 326.3(a): "It
shall be unlawful for any person to distribute, sell, offer for sale, purchase for the purpose of resale, or possess
for the purpose of resale, any restricted pesticide unless said person shall have applied for, and been issued a
Should you require information to obtain a commercial permit, please contact the Pesticide Certification
Section, at (518) 402-8748.
The Certificate of Pesticide Registration and a copy of the New York State stamped "ACCEPTED" SLN
labeling for Lorsban-4E and Lorsban 15G are enclosed for your records.
Please be reminded that a copy of the accepted SLN label must be distributed with all product distributed
in New York State and be in the possession of the user at the time of pesticide application.
Please contact Ms. Jeanine Broughel, of my staff, at (518) 402-8768, if you have any questions.
Samuel J. Jackling
Pesticide Product Registration Section
cc: w/enc. - N. Kim/D. Luttinger - NYS Dept. of Health
R. Zimmerman/ R. Mungari - NYS Dept. of Ag. & Markets
G. Good/W. Smith - Cornell University, PMEP