A monthly report on pesticides and related environmental issues

Issue No. 114, August 1995

Open Forum:
In an attempt to promote free and open discussion of issues, The Agrichemical and Environmental News encourages letters and articles with differing views. To include an article, contact: Catherine Daniels, Food and Environmental Quality Laboratory, Washington State University, Tri-Cities campus, 2710 University Drive, Richland, WA 99352-1671. Phone: 509-372-7495. Fax: 509-372-7491. E-mail:


Postcards were sent in June to everyone appearing at that time on the general mailing list for the Agrichemical and Environmental News. Those receiving cards were asked to fill out and return the cards, if they wished to remain on the mailing list.

If you have misplaced/not received a postcard, or want to be added to the mailing list, please contact Eric Bechtel at Phone: 509-372-7378 or Fax: 509-372-7460 to continue receiving the AENews.

Those not returning completed cards or in some other way indicating their wish to continue receiving the newsletter will be deleted from the mailing list!

A small number of returned cards were unidentifiable. Should you not receive your AENews in the future, please let us know.

In This Issue

News and Notes


How to Obtain a Minor Use Pesticide

Available Reports


EPA Reviews Propargite

MCPA Uses Face Possible Cancellation


The Triazine Wars Continue

Plant-pesticide Approved For Use On Field Corn


Washington Minor Crops Book Soon to be Available

Officially Unofficial


State Issues

Federal Issues


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News and Notes


IR-4 to sponsor food use workshop

The IR-4 Project is sponsoring its annual Food Use Workshop September 6-8. This workshop will be for the purpose of reviewing and prioritizing both new and reregistration pest control needs for minor crops, especially in view of the new EPA crop groupi ng/subgrouping scheme.

Those interested in obtaining support from IR-4 for 1996 are urged to contact their state IR-4 representatives as soon as possible. See How to Obtain a Minor Use Pesticide for more information.

Aldicarb is back

Just as the AENews was going to press, we learned that aldicarb (Temik) use on Northwest potatoes has been reinstated by EPA. A number of restrictions will be in place on the use of the pesticide.

AENews on WWW

Some bugs still need to be worked out, but the AENews is now accessible from the world wide web. The address for the page is http://WWW.WSU.EDU:8080/~RAMSAY

New commission to be named early

Requests for nominations to the Washington Commission on Pesticide Registration were sent in July by the governor's office to selected Washington agricultural organizations. The legislation creating the commission calls for nominations to be submitted by September 1 and for Governor Lowry to appoint members by October 15.

Based on input from the national IR-4 Project, it became clear that in order for the commission to be functioning in time to coordinate 1996 activities with IR-4, it must be created before October 15. Governor Lowry has agreed to make appointments earl y.

According to a Washington State Department of Agriculture official, the governor may make the appointments to the committee in early September, possibly within the first few days of the month.

Notice required before application

Washington State certified applicators of pesticides must notify pesticide-sensitive persons before applying pesticides. At least two hours prior notification is required before pesticides may be applied on properties adjacent to properties owned by su ch persons.

These pesticide-sensitive individuals are registered with the state department of agriculture. Additional information and two lists, a list of names and addresses of pesticide-sensitive individuals and a list of properties adjacent to pesticide-sensiti ve individuals, are available from the WSDA (see Available Reports).

Questions may be directed to Kathi Parker or Cliff Weed at (206) 902-2040.

Plastic pesticide container collection requirements

1. Containers must be multiple rinsed so that no residues remain.
2. Containers must be clean and dry inside and out, with no apparent odor.
3. Hard plastic lids and slip-on lids must be removed.
4. Glue-on labels may remain.
5. The majority of the foil seal must be removed from the spout. A small amount of foil on container rim is acceptable.
6. Half pint, pint, quart, one and two and one half gallon containers will be accepted whole.
7. Special arrangements MUST be made for 30 and 55 gallon containers, by calling (509) 457-3850 prior to collection.

WPPCA Plastic Pesticide Container Recycling Program
September 1995 Collection Sites



Sponsor and Contact


Simplot, Bruce

Rich Yeager, ph: (509) 488-2132

same as

same as

Wolfkill Feed & Fertilizer
Craig Ford, ph: (509) 488-3338

same as

same as

Cenex Supply
Dick Leavitt, ph: (509) 488-5261

same as

same as

Crop Protection Services
Tony Eglet, ph: (509) 488-5227



Yakima County
Mark Nedrow, ph: (509) 575-4076



Kittitas Co. Farm Bur.
Tom Hoffman, ph: (509) 962-7507

The Washington Pest Consultants Association recycles plastic pesticide containers. Listed above are recycling dates and locations for the month of September. Consult the AENews for future collection sites or contact WPCA representative Steve George at (509) 457-3850.

**Containers not meeting above specifications cannot and will not be accepted. If you or your organization have an interest in sponsoring a recycling event this year, please contact: Steve George at (509) 457-3850 or Gary Pelter at (509) 754-2011.

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How to obtain a minor use pesticide

A checklist for those working with IR-4

Submit Pesticide Clearance Request
Contact your IR-4 state or federal liaison representative to request a Pesticide Clearance Request (PCR) form. For the name and phone number of your representative, call the IR-4 regional coordinator for your area (see listing below). Submit the request p romptly. Research planning meetings are held each year from September to November.

Monitor the request

Follow-up after IR-4 accepts your request

Work with IR-4 headquarters staff to develop field trial protocols. These guidelines assure the number of applications will be representative of your needed use pattern and pre-harvest interval for the purpose of obtaining residue data. Use restric tions of a pesticide may alter the use pattern.

Contact the IR-4 regional coordinator periodically to determine if:

Read the IR-4 Newsletter. This is perhaps the best way to know of the latest minor use pesticide clearance news. Some of the topics covered regularly in the quarterly newsletter and prioritization workshops are: up-to-date information on new and on-goi ng projects; plans for new research; petitions to EPA for completed projects. Call IR-4 headquarters to be added to the mailing list.

Attend an IR-4 priority workshop or write to the liaison representative prior to the workshop. IR-4 policy is to pursue high priority minor use needs. Your input may determine whether your request will be rated as a high priority. When scheduled, the w orkshop date, time and place will appear in the IR-4 newsletter. For additional information, call the liaison representative or IR-4 Regional Coordinator.

For further information, contact:

Northcentral Regional Coordinator
Dr. Satoru Miyazaki
Pesticide Research Center
Michigan State University
East Lansing, MI 48824
Phone: 517-353-9497
Fax: 517-353-5598

Northeast Regional Coordinator
Mr. John H. Martini
Analytical Laboratories
Dept. of Food Science & Technology
NYSAES-Cornell University
Geneva, NY 14456
Phone: 315-787-2308
Fax: 315-787-2397

Southern Regional Coordinator
Dr. Charles W. Meister
Pesticide Research Lab
Building 685, IFAS
University of Florida
Gainesville, FL 32611
Phone: 904-392-2399
Fax: 904-392-1988

Western Regional Coordinator
Mr. Rick Melnicoe
Dept. of Environmental Toxicology
University of California
Davis, CA 95616
Phone: 916-752-7633
Fax: 916-752-2866

IR-4 Headquarters
PO Box 231
Rutgers, State Univ. of New Jersey
New Brunswick, NJ 08903
Phone: 908-932-9575
Fax: 908-932-8481

Dr. Paul H. Schwartz, Chairman
Office of Minor Use Pesticides
Bldg. 1072 BARC-EAST
Beltsville, MD 20705
Phone: 301-504-8256
Fax: 301-504-8142

Alan Schreiber
Food and Environmental Quality Lab
100 Sprout Road
Richland, WA 99352-1643
Phone: 509-372-7324
Fax: 509-372-7460

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Available Reports

Agricultural Chemical Usage Vegetables, 1994 Summary.USDA National Agricultural Statistics Service and Economic Research Service. July 1995.

Pest and Pesticide Use Assessment and Personal Protective Equipment Use for Field Corn Production Systems in New York State for 1994.Cornell University, Ithaca, NY.

Potential Economic Impacts of the Delaney Clause Implementation on U.S. Agriculture. National Center for Food and Agricultural Policy.

Memorandum: Lists of Pesticide-Sensitive Individuals. State of Washington Department of Agriculture. June 15, 1995.

Economic Impacts and Environmental and Food Safety Tradeoffs of Pesticide Use Reduction on Fruit and Vegetables.Auburn University. June 1995.

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EPA reviews propargite

...Alan Schreiber

Propargite, the most widely applied miticide in the U.S., with about 5 million pounds used annually on over 2.6 million acres, is under scrutiny by the Environmental Protection Agency.

Current registered uses in Washington for the compound include bean, lima bean, field corn, popcorn, potato, alfalfa seed, clover seed, corn seed, carrot seed, mint, sweet corn, apple, non-bearing cherry, Christmas tree, conifer (nursery), hops, nurser y, ornamental, rose, strawberry, apricot, cherry, flower, grape, nectarine, peach, pear, plum, prune, non-bearing pear and walnut.

The EPA believes, but has not released its opinion publicly, that propargite may pose a cancer risk. The chemical was classified as a B2 , probable human carcinogen, in 1992. The manufacturer has presented new information to the EPA that could revise t he classification to C2, possible human carcinogen. This new data, if accepted by EPA, would reduce the potential risk estimate substantially.

Agency officials believe they have most of the information needed to make a regulatory decision and are negotiating the finer points of the risk assessment with the manufacturer, Uniroyal Chemical Company.

Uniroyal recently submitted additional toxicology and metabolism studies to the EPA, in order to better define the actual risk. The company met with EPA on August 17 to discuss the agency's concerns. Uniroyal believes that the agency's initial assessme nt overstates the risk and that a recent market basket survey proves that exposure to propargite residues is lower than expected.

According to the survey, no propargite residues were detected in samples of infant or adult apple juice, beef, milk, orange juice and oranges. Residues for other commodities sampled _ apples, applesauce, grapefruit, grapes, infant applesauce, infant pe aches, raisins, strawberries and peaches _ were less than 3 percent of allowable tolerance.

I plan to present additional information on the risk associated with the use of propargite. In this issue, I will describe some of the benefits associated with propargite use, as calculated recently by the USDA National Agricultural Pesticide Impact an d Assessment Program (NPIAP).

If propargite were banned, the annual economic loss would be approximately $240 million. The following table demonstrates the estimated losses by crop. According to the NAPIAP study, the most severely impacted commodities would be hops ($80.3 million), potatoes ($32.6 million), mint ($20.0 million), alfalfa seed ($16.5 million) and apples ($16.3 million). Each of these crops is important to the Northwest economy, and use of propargite is an important tool for their production.

Many crops on which the miticide is used have no effective alternatives. Crops on which propargite is used and are considered to have few or no alternatives include alfalfa seed, apricots, clover seed, corn, cranberry, peanuts, potatoes and strawberry.

Estimated economic losses per crop
based on cancellation of propargite uses


Pounds Used

Acres Treated

Propargite ban impact
($ million)

Alfalfa Seed
















































Plums &
























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MCPA faces possible cancellations

MCPA is undergoing reregistration by EPA. MCPA is a widely used phenoxy herbicide similar to 2,4-D but with a different spectrum of control. The herbicide is used on a wide variety of sites, with 25 companies having 68 products registered in Washington State. The herbicide is important in controlling weeds on home lawns, commercial turf, golf courses, grassy noncropland, small grains, peas and other legume crops.

The primary registrants _ Akzo Nobel, BASF, DowElanco, A.H. Marks and Nufarm _ have formed a reregistration task force to maintain registration of the herbicide. Richard Otten, chair of the MCPA Task Force, on July 28 sent a letter describing potential unsupported uses of the pesticide to companies with MCPA registrations. In order to maintain economically viable registrations, the task force plans not to support registrations deemed too costly to reregister. Several unsupported MCPA uses, however, are important to weed control programs, and loss of these sites could hurt some growers.

Uses to be supported: MCPA Acid - turf MCPA Dimethylamine Salts - small grains (barley, oats, rye and wheat); small grains underseeded with alfalfa, clover, lespedeza, trefoil and vetch; pasture and rangeland grasses (including grasses grown for seed); turf and noncrop areas MCPA 2-Ethylhexyl Ester - small grains (barley, oats, rye and wheat); small grains underseeded with alfalfa, clover, lespedeza, trefoil and vetch; pasture and rangeland grasses (including grasses grown for seed); turf and noncrop a reas

MCPA uses not supported by the task force include all forestry uses; all aquatic food uses; all aquatic non-food uses; beans; peas; rice; sorghum; canary grass and flax. Those relying on these use patterns should contact their state IR-4 or PIAP repres entative. It appears these uses will be unavailable in the future, unless a user group expresses interest (and willingness to pay for outstanding data requirements) in keeping the uses. It may be possible to negotiate with either EPA, the MCPA Task Force or with a particular MCPA registrant to support a critical use for a time, during which a substitute herbicide could be developed.

MCPA on peas is a good example of a critical unsupported use. Washington produces about 60,000 acres of green peas and 98,000 acres of dry peas. In some pea-producing areas of the state, MCPA is considered critical to weed control programs. It is estim ated that the herbicide is used on about 75% of the irrigated peas (green peas) and to a lesser degree on dry peas in Washington. Alternative herbicides are less effective, or they interfere with rotation crops such as sweet corn. Loss of MCPA could resul t in increased use of less effective products, worse weed problems and decreased pea acreage.

Anyone impacted by the potential loss of MCPA on forestry, aquatic food uses, aquatic non-food uses, beans, peas, rice, sorghum, canary grass and flax should be prepared to take action to maintain critical uses.

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The triazine wars continue

In November of last year, EPA placed the triazine herbicides, atrazine, simazine and cyanazine, under special review. The special review (the first new special review in about four years) was initiated based upon the agency's concern that long-term exp osure to these pesticides in food and drinking water may pose a risk of cancer.

The case against the herbicides exists, for the most part, on paper. The actual risk of cancer from the herbicides is relatively minimal when compared to other cancer risks. Cyanazine, for example, has been found in few situations at levels in excess o f the Health Advisory Level (HAL) established by EPA. However, at the current HAL for cyanazine of one part per billion, an individual would have to drink more than 350,000 eight-ounce glasses of water a day during a 70-year lifetime to reach a level of e xposure that could cause a negative health effect.

After a long and difficult process of negotiation with EPA, Du Pont has decided to phase out the use of cyanazine. Fred Degiorgio, manager of regulatory and environmental affairs for Du Pont, stated that, rather than fight EPA in the special review pro cess with little hope of winning, Du Pont decided to agree to a long-term phase-out in order to preserve use of the product as long as possible. This is a strategy similar to one used by Amvac when negotiating with EPA about mevinphos (Phosdrin).

Use of cyanazine products Bladex and Extrazine II will remain available without change through next year. After 1996, the maximum rate of cyanazine application will be reduced annually until 1997. The current maximum rate of application is 6.5 pounds o f active ingredient per acre. Incremental decreases in pounds per acre will be as follows: 1997 (5.0), 1998 (3.0), 1999 (1.0). Applications made after 1997 will require a closed cab during application. Existing stocks can be used through December, 2002.

The phase-out period is expected to give growers time to change to alternatives to cyanazine. Growers are not expected to incur additional costs as a result of this action.

Cyanazine is one of the most widely used herbicides and is registered for use on corn, cotton and sorghum. An estimated 95 percent of use is on corn, principally in the Midwest; use of the herbicide in the Northwest is insignificant.

On July 19, EPA and USDA met to discuss minor crops and the special review of the triazines in Washington, D.C. At that meeting, EPA stated that it would be willing to review any pertinent data that user groups provided regarding the importance of tria zine (actually simazine) use on minor crops.

Anyone wanting additional information about cyanazine can contact Du Pont at 1-800-699-4769 or Al Heir at EPA at 202-260-4374.

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Plant-pesticide approved
for use on field corn

The EPA has issued a conditional registration amendment approving full commercial use of a plant-pesticide to combat insect damage in field corn.

Ciba Seeds of Greensboro, N.C. and Mycogen Plant Sciences of San Diego, Calif. are the registrants and developers of the plant-pesticide that is produced when genetic material necessary to make a truncated version of the naturally occurring Baccillus t huringiensis (Bt) CryIA (b) insect toxin is transferred to corn.

Use of the product is expected to increase corn yields 10 to 15 percent and to help eliminate the application of more toxic pesticides used to control insects on corn plants. The primary target of the toxin is the European corn borer.

The product registration is limited currently to commercial field corn production; sweet corn and popcorn currently remain registered for seed corn propagation only. EPA's initial registration in late March for this plant-pesticide allowed planting of limited acreage for seed corn.

The EPA has reviewed and approved the resistance management plan for the Bacillus thuringiensis corn plant-pesticide. The management plan includes, among numerous actions, close monitoring of the plant-pesticide to determine if resistance is developing in target insects.

The agency concluded that the resistance plan submitted by the registrants would reduce the possibility of resistance developing for three to five years following application of the corn plant-pesticide.

Commercial use of Bacillus thuringiensis corn plant-pesticide is the second commercial registration of plant-pesticides. The first was in early May, when the EPA registered a plant-pesticide on potatoes.

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Could ban be lifted on methyl bromide?

U.S. House members are generating a bill that could rescind the January 1, 2001 ban on production and importation of the fumigant methyl bromide. According to the sponsor of the bill, Rep. Miller (R-FL), there are significant reasons why methyl bromide should not be banned in the U.S.

According to Miller, there is no plan for a global phase-out of methyl bromide. A unilateral U.S. ban without an alternative will seriously harm U.S. agriculture. A unilateral phase-out will only shift methyl bromide production to other countries.

EPA originally imposed the impending ban, because of suspected ozone-depleting properties of the chemical. Shifting production abroad will neither reduce the total amount of methyl bromide nor improve the environment, because ozone depletion is a globa l problem.

Miller believes methyl bromide should not be banned in the U.S. until an acceptable, cost-efficient alternative is found. This bill would postpone the methyl bromide ban until a substitute becomes available.

This article was taken from Chemical Regulation Reporter, June 30, 1995, as reported in the August 1995 University of Florida newsletter Chemically Speaking.

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Washington minor crops book
soon to be available

Washington Minor Crops, a reference book on the minor crops of Washington State, is in press and should be available in early September.

The 330-page book, co-authored by Dr. Alan Schreiber, Agrichemical and Environmental Education Specialist and Laura Ritchie, editor (former), Washington State University, describes more than 200 of the commercially grown minor use food, feed and seed c rops in the state of Washington. It mentions the common pests of these crops and 112 pesticides.

Minor crops are generally those for which the crop acreage and the volume of pesticide required are insufficient to make registration cost effective for a pesticide manufacturer. In Washington, these crops include such well-known commodities as apples, hops, grapes and potatoes and such exotic commodities as evening primrose, pepino, currants and Belgian endive. The only food and feed crops not covered are alfalfa, barley, corn, oats and wheat.

The book is divided into four parts: a five-page introduction, a 21-page description by county of Washington agriculture, a four-page table listing crops grown by county and a 283-page crop-by-crop description of Washington agriculture.

Also included is a list of crop synonyms (a linkage of a commonly used crop name such as broccoli raab with the crop's less common names of Chinese flowering cabbage, choy sum and rapini), tables relating common names and brand names of pesticides and indices by crop, county and pesticides.

The general layout of information contained in the book is similar to that shown on the following two pages. First on the page is a box containing production statistics, such as the number of acres on which the crop is grown, the number of growers and the value of the crop. Then, separate sections provide description of the crop, the key pests, the pesticides used commonly on the crop, a discussion of the key pest control issues, listings of expert contacts and sources, and a map showing where the crop is grown in the state.

The book will be available from WSU extension publications. The cost of the book has not been determined.

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The following information about the annual grass timothy was taken from one of the 176 crop description sections in Washington Minor Crops, a soon-to-be-released reference book from WSU extension publications describing the minor use crops of Washington S tate.

Timothy -- Phleulm pratense (Gramineae)

Fast facts:

Acres in Washington
Per Acre Value
Number of Growers
Value of Production in Washington

$1,650 average
250 in Kittitas County
$54.5 million-$59.4 million


Description of crop:

Timothy is an annual grass grown frequently with legumes, typically alfalfa. It is tall and dense growing and thrives in areas that are irrigated or receive at least 20 inches of rainfall annually. Timothy generally is harvested twice, with the last cu tting in late August or early September. If the product is intended for Japanese markets, harvest is after bloom for aesthetic purposes. Much of the hay sold to Japan is used to feed horses, particularly race horses. This late harvest for export markets r equires significantly greater efforts to combat pests than timothy grown for local markets. However, the high input is balanced by the high value of the export crop. The export value of timothy in Washington is $19 million and is worth double or triple th is amount after brokering. The value of all timothy is not necessarily this high; some is grown in forage mixes for local consumption. After the second cutting, growers may introduce sheep or cattle to the field for grazing. This is done primarily to supp lement income. The Organization of Kittitas County Timothy Hay Growers and Suppliers represents the majority of timothy hay growers in Washington.


Key pests:

The meadow vole is the most devastating pest, because it reduces yield and crop quality. The vole feeds on both the roots and the foliage of the plant, resulting in reduced vigor. Foliar feeding also clips the stems, making them inaccessible for harves t. Pocket gopher and yellow-bellied marmot can be a problem, although yellow-bellied marmot has not been a problem recently. Insect pests are primarily mites, specifically the banks or timothy mite and winter grain mite. Grass scale can also be devastatin g. At this time, cutworms, armyworms and leafhoppers are generally not considered a problem. However, industry experts believe research is needed to determine their impact on timothy production. The most significant pest in terms of product quality is bro wn leaf disease. Although it does not appear to limit the growth of the plant, the discolorations on the leaf lead to large reductions in price for hay destined for Japanese markets. Likewise, the Hessian fly, which is common in timothy, does not damage t he plant but, due to a Japanese quarantine of Hessian fly, timothy must be fumigated. In 1993, some timothy fields were affected by smut. This disease did not limit production; however, it could be a problem in the future. Grassy weeds, especially bluegra sses and quackgrass, are the most problematic weed pests. Broadleaf weeds can also limit production.


Key pesticides:

Washington obtained a Section 18 exemption in 1994 for use of zinc phosphide as a broadcasted rodenticide. Traps, gas and paraffin block baits are used also for controlling pocket gophers. The few miticides registered for use on timothy have limited ef fectiveness. They also generally require multiple applications. The industry obtained a Section 24(c) registration for use of methidathion to control mites. Aluminum phosphide is used as a fumigant for Hessian fly. Brown spot is currently uncontrollable, because no fungicides are registered on timothy. Chlorothalonil has been used with moderate success under an experimental use permit. Grassy weeds are not controlled with pesticides, and growers rely on rotations to limit problems. If stands are exclusive ly timothy, dimethylamine salt of dicamba, 2,4-D and clopyralid effectively control broadleaf weeds. However, if stands are a timothy/alfalfa mix, only 2,4-D can be used safely. Glyphosate is used to remove a stand.


Critical pest control issues:

Timothy is classified as hay by EPA. This classification has eased greatly the difficulties in registering pesticides. Registration of an effective miticide and fungicide is a critical issue in timothy production. Currently, timothy is not grown for se ed in Washington; however, some growers are expressing an interest in producing seed. If this occurs, an effective insecticide is necessary to control lygus bugs. Continued access to zinc phosphide used as a broadcast rodenticide is important for timothy hay production in the Kittitas Valley. The IR-4 Project is conducting zinc phosphide field trials in 1995 in Kittitas County.


Expert contacts:

Tom Hoffman
WSU Cooperative Extension
Courthouse, Rm. 217
5th and Main
Ellensburg, WA 98926-2887

Steve Fransen
WSU Cooperative Extension
7612 Pioneer Way E.
Puyallup, WA 98371



Peterson, Paul W. and William J. Moldovan. Hay Production Guide for Northeastern Washington. Washington State University Cooperative Extension Bulletin 1516. April 1989. Hoffman, Tom. Personal communication. February 8, 1994. Alberta Forage Manual. 4th ed. Alberta Forage Crops Advisory Committee. Fransen, Steve. Personal communication. July 21, 1994.


Location of production:
Approximately 85 percent of timothy produced in Washington is grown in Kittitas County.

Western Washington
San Juan

Eastern Washington
Pend Oreille

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Officially Unofficial

Officially Unofficial is a regular feature that may include information considered politically inappropriate by some.


**Gallo Brothers once was the largest organic grower in the world. In 1994, I toured a 5,000-acre-plus organic vineyard in California. Their operation at the time seemed impressive. In total, Gallo had over 10,000 acres of organic grapes. Due to th e difficulty in producing organic grapes on a large scale, the company has largely switched back to conventional production of grapes.

**I recently became aware of a very interesting and challenging pesticide issue in Washington. The historical use of lead arsenate, primarily in orchards, may become one of the more pressing and thorny problems for the Department of Ecology, the lead state agency on the issue. Use of lead arsenate on more than 100,000 acres in the first half of the century has left thousands of acres of land in Washington with residues above the levels considered by the state as safe. The astronomical cost of cl eaning up the sites prevents DOE from accomplishing its clean up goals.

**There is a draft plan circulating around EPA to radically change the manner in which the cancer risk from pesticides is calculated. The current method utilizes a risk quotient called Q-star. Explaining what a Q-star is is too complicated for t his column. EPA is considering use of a different method to improve the risk characterization of propargite and other pesticides suspected of being carcinogens. This new method, which uses an ED10 (the effective dose that affects 10 percent of the populat ion exposed to the chemical) could significantly change cancer risk characterization. The entire risk/benefit equation for propargite would change (possibly for the better) If this new method is adopted. If the new plan is adopted, It would do away with t he designations of B1, B2 and C carcinogens. This would have some profound implications, with one potential change being the delisting of some pesticides as Delaney chemicals. Pretty interesting....

**Determining the impact of the cyanazine phase-out on the triazine special review is difficult. If EPA looks at the risks from each compound separately, then removal of one compound would not change the risk assessment of the other two. However , if the risk from all three compounds are combined, such as combining the total exposure from groundwater, then taking cyanazine out of the picture helps reduce the overall risk and makes it harder to take action against atrazine or simazine.

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State Issues

Special Local Needs (Section 24c)

Label restrictions for Special Local Needs in Washington: The following pesticide uses have been granted label registrations by the Washington State Department of Agriculture under the provisions of Section 24 (c) amended FIFRA.

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Federal Issues

Emergency Exemptions (Section 18)

A crisis exemption has been granted for the following use:


The following tolerances were granted by EPA since the last report (July 1995). These data do not mean that a label has been registered for this use. These pesticides must not be used until a label is registered with EPA or a state department of agricu lture.




D/H=desiccant, herbicide


FA=feed additive

G=growth regulator





V=vertebrate repellent






(H) triasulfuron



barley, forage; wheat, forage



barley, grain; milk; wheat, grain



barley, straw; wheat, straw



cattle, fat, mbyp except kidney,
meat; goats, fat, mbyp except
kidney, meat; hogs, fat, mbyp, meat;
horses, fat, mbyp except kidney,
meat; sheep, fat,
mbyp except kidney, meat



cattle, kidney;
goats, kidney;
horses, kidney;
sheep, kidney



grass, forage



grass, hay

(G) 6-benzyladenine

Abbott Labs



(H) butylate



corn, field, grain;
corn, pop, grain;
corn, sweet (kernels plus cob with husk removed);
corn, field, fodder;
corn, field, forage;
corn, field, forage;
corn, pop, forage;
corn, sweet, forage

(F) oxytetracycline



peaches, pears

(C12-C18)fatty acid
potassium salts,
saturated and unsaturated



in or on all raw ag
commodities when
used in
accordance with good
agricultural practices

(I) 0-[2-(1,1-dimethylethyl)-
5-pyrimidinyl] 0-ethyl-0-



corn, forage & fodder,
field, pop & sweet;
corn, grain, field & pop;
corn, sweet (k+cwhr)

(I) cyfluthrin



corn, forage & fodder,
field, pop & sweet;
corn, grain, field & pop;
corn, sweet (k+cwhr)

(I) lambda-cyhalothrin

Zeneca & Coopers Animal Health


broccoli; cabbage



cattle, fat; goats,
fat; hogs, fat;
horses, fat;
sheep, fat



cattle, meat,
mbyp; goats,
meat, mbyp;
hogs, meat,
mbyp; horses,
meat, mbyp;
sheep, meat,
mbyp; sorghum,
grain; sunflower,
seeds, forage;
wheat, bran



corn, grain (field
& pop); corn,
sweet (k + cwhr);
cottonseed; peanuts;
peanut, hulls; wheat, grain



corn, fodder



corn, forage



dry bulb onion; tomatoes



eggs; poultry, fat,
meat, mbyp;






lettuce, head;
wheat, forage,
hay, straw, grain dust



milk, fat (reflecting
0.2 ppm in whole milk)



corn, grain flour



sunflower, oil



sunflower, hulls



tomato pomace (dry or wet)

(A) poly(phenylhexylurea),
cross-linked, ave. MW=36,000



when used as an
encapsulating agent

(F) fenarimol


0.5 (not more than 0.25 ppm shall be present in pulp after peel is removed)








(I) cyfluthrin amended food/feed additive regulation for residues in food/feed areas of food/feed handling establishments. Crack & crevice or spot treatments shall be limited to a maximum of 0.1% active ingredient by weight, applied with a low pres sure system with a pinpoint/variable-pattern nozzle. Dust formulations are limited to a maximum 0.1% active ingredient by weight, applied with hand duster, or other equipment capable of applying dust insecticide directly into voids, cracks & crevices. Dust applications should be made to avoid deposits on exposed surfaces or introducing the material into the air. Cover exposed food/feed or remove food/feed from premises. Do not apply directly to food/feed. Reapplications can be made at 10-day intervals .







(H) Clethodim



onions, dry bulb;
sugarbeet, roots



sugarbeet, tops



sugarbeet, molasses

(a)=time limited tolerance expiring July 20, 1998
(b)=time limited tolerance expiring July 6, 1999
(c)=time limited tolerance expiring July 5, 1999
(d)=time limited tolerance expiring November 15, 1997
(e)=there are no US registrations for bananas as of April 26, 1995
(f)=time limited tolerance expiring November 15, 1997

Reregistration Notifications

For additional information on any reregistration notification, contact the individual(s) listed or contact:

Alan Schreiber WSU Pesticide Coordinator 100 Sprout Road Richland, WA 99352-1643 Ph: 509-372-7462 Fax: 509-372-7460

The source for this information, the Reregistration Notification Network, is a cooperative effort of USDA-NAPIAP, Interregional Project No. 4 (IR-4), U.S. Environmental Protection Agency (USEPA), and the American Crop Protection Association (ACPA).

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Contributors to the Agrichemical and Environmental News:

Alan Schreiber, Allan Felsot, Catherine Daniels, Carol Weisskopf, Eric Bechtel

If you would like to include a piece in a future issue of the Agrichemical and Environmental News, please contact Catherine Daniels, Food and Environmental Quality Laboratory, Washington State University, Tri-Cities campus, 2710 University Drive, Richland, WA 99352-1671. Phone: 509-372-7495. Fax: 509-372-7491. E-mail: cdaniels@tricity.wsu.edu

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