West Virginia University

Extension Service

July 2001

Dr. John F. Baniecki, Extension Specialist in Plant Pathology/Entomology,
Pest Management Program

The U.S Senate Unanimously Passed a Bill that would Regulate how  Schools can use Pesticides

Under the School Environment Protection Act of 2001 (SEPA), schools would be required to take the following actions.

1.      Implement a school pest management policy considering sanitation, structural repair, mechanical, biological, cultural and pesticide strategies that minimize health and environmental risks as developed by the state and EPA approved;

2.      Universal notification 3 times per year (at the beginning of the school year, midyear, and once for summer session) of school pesticide use;

3.      Provide parents and school staff access to health and toxicity information on all pesticides used in schools;

4.      Establish a registry for parents and school staff to sign-up to receive 24 hour pre-notification of a pesticide application;

5.      Provide information on the pesticide's adverse health effects on the notice provided via the registry;

6.      Post signs 24 hours prior to the pesticide application and remain posted for 24 hours;

7.      Ensure the area where a pesticide application is to take place is unoccupied;

8.      Record keeping of pesticide use and disclosure;

9.      24 hour reentry period for pesticide applications made via baseboard spraying, broadcast spraying, tenting or fogging, unless the label specifies a specific reentry interval. Antimicrobials, baits, gels, and pastes are exempt from the notice via registry and posting requirement, and states or local governments/schools may adopt more stringent policies.

 The EPA and a Key Registrant met to Discuss Risk Mitigation for Tetrachlorvinphos

Tetrachlorvinphos is widely used in animal operations and for pet treatments. Boehringer Ingelheim Vetmedica is the registrant for livestock products, and Hartz Mountain is the registrant for pet products. All crop uses for tetrachlorvinphos have been canceled.

Boehringer met with EPA to discuss risk and plan mitigation strategies. Occupational uses on poultry using backpack sprayers and low-pressure hand wands are areas of concern. Mitigation options were proposed and could possibly be implemented in the near future. Tetrachlorviphos is used for livestock and pet treatments.

A meeting with Hartz to discuss residential uses will be held in two weeks. Tetrachlorvinphos, an organophosphate, is currently in phase 6 of the public participation process.

The Current Cancellation Scenario for Benomyl is for DuPont to Stop Sale of their Product, Benlate, at the End of June 2001

This will be followed by a cessation of sales by distributors by the end of 2002. Benomyl products in the hands of users or dealers can be sold or used until exhausted. However, EPA will revoke the tolerances for benomyl as some, yet undetermined, date. Since this cancellation decision was voluntary and not risk related, the period before revocation of tolerances will likely be generous, probably three years or more. It must be stressed that this was not a risk mitigation decision, but rather it was a business decision by DuPont based upon costs incurred through litigation.

Benomyl is a critical fungicide for a number of crops. Minor crops are particularly vulnerable because they are less likely to have other alternatives. The following crops/uses are considered critical; these uses would be good candidates to request an EPA emergency exemption (Section 18) for another pesticide if benomyl is not available.

Blueberries -- Fusicoccum canker (Fusicoccum sp.), Phomopsis canker (Phomopsis vaccinii), and anthracnose fruit rot (Colletotrichum gloeosporioides) - this use was added to the list following the teleconference based on new information
Canola -- Sclerotinia stem rot (Sclerotinia sp.)
Citrus -- postbloom fruit drop (Colletotrichum acutatum)
Garlic -- Penicillium clove rot (Penicillium sp.)
Grapes -- Eutypa dieback (Eutypa lata)
Melons -- Damping-off (Acremonium spp.)
Mushrooms -- green mold (Trichoderma harzianum)
Pistachios -- Shoot blight (Botrytis cinerea & Botryosphaeria sp.)
Seed Treatment -- black leg of crucifers (Phoma lingam)
Tomatoes -- white mold or timber rot (Sclerotinia sclerotiorum)

September will Mark the End of Conditional Registrations for Crops that Contain Genes that Encode for Bacillus Thuringiensis Protein

This toxic protein is an effective control for certain pests, but some people are concerned about the potential risks of genetically engineered crops. As a result, the EPA is reassessing the risks and benefits of Bt crops. The review document will include consideration of public comments, report of the SAP released in March from the October meeting, data from the monarch DCI, and additional scientific data and information that has come in since the preliminary reassessment was released last September. An option paper on recommendations for changes to the current registrations is also being developed.

 Pesticide Registrations and Actions

·         Pylon® insecticide/miticide (chlorfenapyr) produced by BASF Corporation, was registered effective June 7, 2001 by FDACS Bureau of Pesticides for use on ornamental crops grown in greenhouses. (PREC Agenda, 7/5/01).

·         Dow AgroScience's herbicide fluroxypyr received Reduced Risk Status for new uses in corn, sorghum, pasture, and turf on June 5, 2001. Dow used three years of Section 18 data to demonstrate that the use of this herbicide reduced volunteer potatoes in corn fields, which subsequently reduced late blight and tobacco mosaic virus inoculum loads in these fields. With less inoculum load, adjacent potato fields needed less fungicide (to control late blight) and less insecticide (to control aphids, which vector tobacco mosaic virus). (USDA OPMP Newest News, 6/18/01).  

·         The Insecticide Branch of EPA's Registration Division (RD/IB) issued a conditional registration on June 13 to Protec Health International, Ltd. for use of an insecticide-impregnated mattress cover for the control of dust mites on mattresses. The liner consists of multi-filament fiber netting impregnated with 1.64% permethrin. The use instructions indicate fitting the liner over the mattress followed by removal after eight weeks. The product is prohibited for bedding of children five years old or less. (USDA OPMP Newest News, 6/21/01).

 Pesticide Tidbits

·         The projected percentage of 2001 acres planted to genetically modified crops is as follows: cotton - 64 percent, soybean - 63 percent, corn - 24 percent. (CropLife, June, 2001).  

·         DDT (an insecticide) and PCBs (industrial chemicals) have similarities to the hormone estrogen, which has been associated with increased risk of breast cancer. Consequently, these synthetic compounds have also become suspects with regard to breast cancer causation. A study in the May 16th issue of Journal of the National Cancer Institute reported that there is no link between DDT or PCBs and breast cancer in women. This study combined the results of five other studies funded since 1993 by the National Cancer Institute and the National Institute of Environmental Health Sciences. (Agromedicine Program Update, June 15, 2001).

·         The pesticide industry and non-   governmental organizations collaborated on an amendment to the education bill recently passed by the Senate. Some of the items that the bill will require of states is: implementation of school pest management policy, universal notification three times a year of school pesticide use, availability of toxicity data on pesticides employed, 24-hour pre-notification parent/staff registry of a pesticide application (antimicrobials, baits, gels, and pastes exempted), 24-hour posting before and after application, and pesticide record keeping. (ACPA communication - 6/19/01 & AAPSE communication - 6/19/01).

A UF researcher has found a new species of termite (Nasutitermes costalis) in Dania Beach. The termite is "ant-like" in appearance and nests and forages at or above the soil surface. This is the first documentation of this termite in the U.S. and although it is not as potentially destructive as the Formosan termite, it is a pest capable of widespread damage to above-ground structures. (Via PestAlert) http://extlab7.entnem.ufl.edu/PestAlert/

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The West Virginia University Cooperative Extension Service, U.S. Department of Agriculture and West Virginia counties cooperating. Equal Opportunity/Affirmative Action Institution.