| PESTICIDE
BRIEFS (5/10/02)
CONTENTS:
(1) DOES
DELAWARE HAVE ORPHAN CROPS?
RETURN TO TOP
June 1, 2002 Southern Solid Waste Management Center Rt 20 (Jones Crossroads), Georgetown DE 8 am to 3 pm Call Delaware Solid Waste Authority at 1-800-404-7080 for details RETURN TO TOP
(3) OP ALTERNATIVE STATUS GRANTED TO NEW INSECTICIDE, FLONICAMID (F 1785 GH) Flonicamid (F 1785 GH) is an insecticide made by ISK Biosciences and FMC. On April 9, 2002 it was granted “OP alternative status” for use on ornamentals grown in indoor greenhouses. Flonicamid is an alternative to the OP's chlorpyrifos, acephate, dimethoate, and oxydementon methyl; the carbamate, fenoxycarb; and the pyrethroids, bifenthin, and fluvalinate, for use on indoor greenhouse ornamentals to control sucking insects (e.g. aphids, trips, whiteflies, leafhoppers, mealybugs, scale, stinkbugs, and plant bugs). Flonicamid is a systemic (plant) insecticide that immediately suppresses the feeding of sucking insects. It's mode of action, although unknown, appears to be unique and should help with pest resistance management. Flonicamid does not work on acetylcholine esterase (OP's and carbamates), or nicotinic acetylcholine receptors (neo-nicotinoids).  RETURN TO TOP
On April 23, 2002 the Reduced Risk Committee of EPA granted reduced risk status to the following chemicals. This means that these products will be fast-tracked through the registration process. 1) Syngenta Crop Protection's, mesotrione (trade name Callisto), for use on sweet corn. Mesotrione is in the novel triketone group of herbicides and should help with IPM and resistance management. Mesotrione was previously registered in June, 2001 as a conventional "reduced-risk" herbicide for use on field corn. 2) ISK's fungicide, cyazofamid (trade name Ranman), for potatoes, tomatoes, cucurbits, and grapes (import only). Cyazofamid is a novel, locally systemic fungicide from a new chemical class based on the cyanimidazole moiety. Cyazofamid is an alternative to the older B2 fungicide chemistries. It should also help with IPM and resistance management. 3) Mitsui's insecticide, dinotefuran, is both a "reduced-risk" and OP alternative pesticide for cotton, leafy vegetables, ornamentals, turf, and public health uses. Dinotefuran is a neonicotiod in the nitroguanidine sub-class. It controls chewing and sucking insects. Dinotefuran's mode of action, appears to be unique in the neonicotinoid class and Mitsui does not expect cross resistance between dinotefuran and other neonicotinoid pesticides. This should help with pest resistance management. The new insecticide active ingredient (A.I.), acetamiprid, (trade name Mospilan) was conditionally registered on March 15th as the first new active ingredient of this fiscal year! This A.I. is a "reduced-risk" pesticide and an OP-alternative for insecticides like acephate on cotton and azinphos methyl on apples, with virtually no major health and/or environmental issues. Acetamiprid was registered for control of sucking-type insects on leafy vegetables, fruiting vegetables, cole crops, citrus fruits, pome fruits, grapes, cotton, and ornamental plants and flowers. This registration decision was accomplished through the joint review process with Canada's Pest Management Regulatory Agency (PMRA). RETURN TO TOP
On March 19th, EPA’s Reduced Risk Committee granted Makhteshim-Agan's insecticide, novaluron (trade name, RimOn), OP (organophosphate) alternative status for new uses (first food) on pome fruit and cotton. Novaluron is an alternative to the OP's azinphos methyl, dicrotophos, chlorpyrifos, and acephate; the carbamates, carbaryl and oxamyl; the organochlorine , endosulfan, and the pyrethroids, lambda-cyhalothrin, cypermethrin, zeta-cypermehtrin, and esfenvalerate for use on pome fruit and cotton. Novaluron is an insect growth regulator (IGR) that works by chitin inhibition. It is unique to IGR's because it is effective against a broad spectrum of insects. As such, it will be a useful alternative to higher risk broad spectrum compounds like the OP's. RETURN TO TOP
Harpin protein (trade name Messenger) has been given full registration for use as a broad-spectrum fungicide and yield enhancer on all food commodities, turf and ornamentals. Harpin is one of a class of proteins produced in nature by certain bacterial plant pathogens and acts by eliciting a natural protective response in the plant that makes it resistant to a wide range of fungal, bacterial and viral diseases. In addition, the product also aids in the suppression of certain insect, mite and nematode pests, and enhances plant growth. The product is produced commercially by genetic alteration of a nutritionally deficient strain of E. coli with DNA from the plant pathogen Erwinia amylovora, which encodes harpin protein. The registrant is Eden BioScience Corp. Registration has been granted for an insecticide chalk product containing 1% tralomethrin under the product name "Ze Lin Chen Chalk". The chalk is a contact pesticide and is applied as a narrow band around baseboards, moldings, around plumbing and other utility installations in residential, commercial, institutional and transportation facilities for control of roaches, ants, and crickets. Due to concerns about exposure to children, child resistant packaging is required to make it dissimilar in appearance to chalk and resistant to access by children. Also, a bittering agent is added to the formulation. The label instructs the user and consumer on the effective use and handling of the product, including precautions to take if exposure should occur. In addition, the registrant has been required to label the product also in Chinese and Spanish because of its potential use in Asian and Hispanic communities. The registrant is barred from using any product names similar to the names of the products that have been illegal in past years i.e., Miraculous Insecticide Chalk, Chinese Chalk and Pretty Baby Chalk. RETURN TO TOP
In a Federal Register notice published on April 24, EPA announced its receipt of requests from Dow AgroSciences LLC and Gustafson LLC for voluntary cancellation of their chlorpyrifos-methyl (trade name Reldan) manufacturing use and liquid formulation products. These actions further implement an agreement by the registrants to voluntarily cancel all products containing this OP stored grain insecticide, rather than develop the additional data needed to support its continued registration. Chlorpyrifos-methyl dust formulation products were canceled effective December 31, 2001. A 30-day public comment period on the manufacturing use and liquid formulation products closes on May 24. If no compelling comments to maintain these products are received during the comment period, EPA intends to issue an order granting these requested chlorpyrifos-methyl product cancellations. EPA anticipates that existing stocks provisions will prohibit the registrants' sale or distribution of these products after December 31, 2003, and will prohibit other persons' sale and distribution of existing stocks after December 31, 2004. The FR notice and other information about chlorpyrifos-methyl are available on the EPA website at http://www.epa.gov/oppsrrd1/op/chlorpyrifos-methyl.htm . RETURN TO TOP
The Endosulfan Task Force has been working on mixer/loader/applicator exposure risks and post-application extended REIs. The registrants have presented their argument against EPA default assumptions, maximum use label rates and grouping together seed crops and food crops to explain high post-application REIs and dermal and inhalation MOEs < 100 for various worker scenarios. EPA will work with the registrant during mitigation to support reduced application rates and to identify grower needs for the endosulfan wettable powder formulation. The FQPA safety factor will remain a 10X. The crops most likely to notice regulatory action of some kind include: cucumber, pumpkin, squash, melons, cantaloupes, eggplant, pepper, tomato, carrots, potatoes, green beans, peas, sweet corn, apples, pears, cherries, peach, plum, apricot, and nectarines. Stay tuned for changes on the Endosulfan label at some point. RETURN TO TOP
Through a Federal Register notice published on April 12, 2002, EPA announced the availability of the revised human health and ecological risk assessments for sodium acifluorfen, and opened a 45-day comment period for the public to submit risk mitigation proposals for this pesticide. Sodium acifluorfen (trade name Blazer) is a broad spectrum herbicide registered on agricultural crops (soybeans, peanuts and rice) for post-emergent weed control, and for use by homeowners as a spot treatment on driveways, sidewalks, and patios. EPA classifies sodium acifluorfen as a probable human carcinogen; however, the registrant is developing additional carcinogenicity data. EPA has possible concerns regarding drinking water and aggregate risks, chronic risks for some bird species at high-use rates and risks to nontarget plants. The sodium acifluorfen risk assessments and related documents are available from the pesticide docket or from the EPA’s website at http://www.epa.gov/oppsrrd1/reregistration/acifluorfen/ . The Federal Register notice, which provides more detailed information on providing comments, is available at http://www.epa.gov/fedrgstr. Comments are due to EPA on May 28, 2002. EPA plans to complete a sodium acifluorfen Reregistration Eligibility Decision (RED) this year. RETURN TO TOP
On March 27, 2002, EPA published Federal Register notices announcing the availability of risk assessments and related documents for two pesticides, imazalil (trade name Bromazil) and Ziram, and inviting public comment for 60 days or until May 28, 2002. Imazalil is a fungicide used for post-harvest treatment of citrus fruits, seed treatment of barley and wheat prior to planting, in egg handling facilities, and on imported bananas. Ziram is a fungicide and an antimicrobial used to control fungus diseases on tree fruits, nut crops, vegetables, and ornamentals; to prevent crop deterioration in storage or transport; as a preservative in adhesives, caulks, sealants, wallboard, and interior latex paint; and as a rabbit repellant on outdoor ornamentals. EPA is reviewing both pesticides and plans to complete Reregistration Eligibility Decisions (REDs) for both Imazalil and Ziram in 2002. Additional information on imazalil is available on EPA’s website at http://www.epa.gov/pesticides/reregistration/imazalil. Information on ziram is available at http://www.epa.gov/pesticides/reregistration/ziram . The two Federal Register notices are available from EPA's website at http://www.epa.gov/fedrgstr . On March 25, 2002, EPA published a Federal Register notice announcing a request from the registrant Earth Care for voluntary cancellation of the product Green Up Kerb 50W (EPA Reg. No. 8660-85) containing the pesticide pronamide. The registrant has waived the 180-day comment period. DE Terbacil Watermelons Morning Glory, broadleaf weeds expires 6/30/03 RETURN TO TOP
Delaware Special Local Needs for this year can be found at: http://www.udel.edu/pesticide/certified.htm Ethalfuralin – Canola, Safflower Bifenazate – Mayhaw (Pome), Company Petition Bentazon – Clover Forage and Hay Sulfuryl Fluoride – Walnut, Raisin (postharvest), EUP Temporary Tolerance MBA Diflubenzuron – Pear Read The Label. Do not use these pesticides on the above commodities until the label lists that commodity. You can sign up by visiting the following URL: http://www.epa.gov/oppfead1/cb/csb_page/form/form.html |
