PNN Update

The PNN is operated by WSU's Pesticide Information Center for the Washington State Commission on Pesticide Registration. The PNN system is designed to distribute pesticide registration and label change information to groups representing Washington's pesticide users. The material below is a summary of the information distributed on the PNN in the past month.

Our office operates a web page called PICOL (Pesticide Information Center On-Line). This provides a label database, status on registrations and other related information. PICOL can be accessed on URL http://picol.cahe.wsu.edu . For more informaiton, call our office at (509) 372-7492.

Federal Issues

Manufacturers' Use Deletions

• In the March 18, 1998, Federal Register, EPA announced that it had received a request from Sun Company to delete herbaceous flowers and foliage plants from the usage sites listed on the label for its product Sunspray 6E. Unless this request is withdrawn, these use deletions will become effective on September 14, 1998.
  
• In the March 18, 1998, Federal Register, EPA announced that it had received a request from Rhone-Poulenc to delete ditchbank from the usage sites listed on the label for its product Weedone Lo Vol 6. Unless this request is withdrawn, this use deletion will become effective on September 14, 1998.

Manufacturers' Product Cancellations

• In the March 18, 1998, Federal Register, EPA announced that it had received a request from Zeneca to cancel the registration for its insecticide Dyfonate II 15G. This product is currently registered for use on the following crops: bean, beet, broccoli, Brussels sprouts, cabbage cauliflower, dry bulb onion, field corn, lima bean, mint, popcorn, potato, radish, strawberry, sugarbeet, sweet corn, sweet potato (supplemental label), and tomato. Unless this request is withdrawn by September 14, 1998, EPA will issue orders canceling this registration. This product is also registered for use on asparagus via SLN WA940012. Although Zeneca has not yet submitted a request, this SLN will also likely be cancelled.
  
• In the March 18, 1998, Federal Register, EPA announced that it had received a request from Zeneca to cancel the registration for its insecticide Dyfonate 4EC. This product is currently registered for use on the following crops: bean, beet, broccoli, Brussels sprouts, cabbage cauliflower, dry bulb onion, field corn, lima bean, pepper, popcorn, potato, sorghum, sugarbeet, sweet corn, and tomato. Zeneca is also requesting cancellation of SLN WA920046. This SLN provides for use of Dyfonate 4EC on the following cole seed crops: broccoli, Brussels sprouts, cabbage, and cauliflower. Unless these requests are withdrawn by September 14, 1998, EPA will issue orders canceling both the Dyfonate 4EC registration and the SLN.
  
• In the March 18, 1998, Federal Register, EPA announced that it had received a request from Pace International to cancel the registration for its fungicide/insecticide Uniflow Sulfur. This product is currently registered for use on the following crops: alfalfa, apple, barley, bean, beet, blackberry, blueberry, boysenberry, broccoli, Brussels sprout, bulb, cabbage, carrot, cauliflower, cherry, collard, corn, currant, dewberry, flower, garlic, gooseberry, grape, kale, loganberry, melon, mint, mustard, nectarine, oat, onion, pea, peach, pear, pepper, plum, potato, prune, raspberry, rose, rutabaga, rye, sorghum, soybean, strawberry, sugarbeet, tomato, turnip, and wheat. Unless this request is withdrawn by September 14, 1998, EPA will issue orders canceling this registration.

Section 18 Specific Exemptions

• On March 3, 1998, EPA approved a Section 18 specific exemption for the use of the herbicide Stinger to control lotus, purple aster, and clover in cranberries. The exemption allows for treatment of 170 acres in Washington and expires 12/31/98.
  
• On March 4, 1998, EPA approved a Section 18 specific exemption for the use of Valent's insecticide Knack to control pear psylla in pears. (Knack is the replacement for Comply, as discussed in PNN notification 1998-20.) This Section 18 exemption expires May 1, 1998.
  
• On March 19, 1998, EPA issued a Section 18 specific exemption for the use of Gustafson's LSP Flowable Fungicide as a seed treatment to control Ascochyta blight on lentils. This Section 18 exemption expires June 1, 1998.

Use Recommendations

• Rhone Poulenc has issued a use recommendation for tank mixing its herbicide Chipco Ronstar 50 WSP with other registered preemergence herbicides for broader spectrum preemergence weed control in ornamentals.
  
• Du Pont has issued a use recommendation for its herbicide Escort. This recommendation provides directions for use to control certain noxious and troublesome weeds in rangeland, pasture, and non-cropland areas.
  
• Amvac has issued a use recommendation for its product PCNB 10% Granules Soil Fungicide. The use recommendation provides directions for furrow treatment for increased control of stem canker and black scurf on potatoes.

Supplemental Labels

• Zeneca has issued a supplemental label for its insecticide Warrior. The supplemental label provides direction for use on the following crops: alfalfa, alfalfa seed, Brussels sprout, cavalo broccolo, cauliflower, Chinese broccoli, Chinese cabbage, Chinese mustard cabbage, kohlrabi, and leaf lettuce.
  
• Monsanto has issued a supplemental label for its herbicide Roundup. The label provides use directions for broadcast applications for weed control in Christmas tree plantations in Washington and Oregon.
  
• Monsanto has issued a supplemental label for its herbicide Roundup Ultra. The supplemental label provides directions for postemergence use on sugarbeet seed crops containing the Roundup Ready gene.
  
• Monsanto has issued a supplemental label for its product Rodeo Emerged Aquatic Weed and Brush Herbicide. The supplemental label provides directions for use for the control of cordgrass (spartina).
  
• Zeneca has issued a supplemental label for its herbicide Devrinol 10-G. The supplemental label provides revised use directions for weed control in both established cranberry beds and in new plantings.
  
• Griffin Corporation has issued supplemental labels for three of its fungicides: Kocide DF, Kocide 101, and Kocide 2000. The supplemental labels reduce the restricted entry interval from 48 to 24 hours and specify certain equipment and precautions that must be used/observed for the seven days following application of the copper hydroxide product. The Kocide products are registered on the following crops:

Kocide 101: alfalfa, apple, apricot, barley, bean, blackberry, broccoli, Brussels sprout, bulb, cabbage, cantaloupe, carrot, cauliflower, celery, cherry, cranberry, cucumber, currant, deciduous/shade tree, eggplant, filbert, flower, gooseberry, grape, honeydew, hop, muskmelon, nectarine, onion, pea, peach, pear, pepper, plum, potato, prune, pumpkin, raspberry, rose, shrub, squash, strawberry, sugarbeet, tomato, walnut, watermelon, and wheat.

Kocide 2000: alfalfa, apple, apricot, barley, bean, beet, blackberry, blueberry, boysenberry, broccoli, Brussels sprout, cabbage, cantaloupe, carrot, cauliflower, celery, cherry, collard, cranberry, cucumber, currant, dill, eggplant, filbert, gooseberry, grape, greenhouse cucumber, greenhouse pepper, greenhouse tomato, herb, honeydew, hop, loganberry, muskmelon, mustard, nectarine, oat, onion, ornamental, pea, peach, pear, pepper, plum, potato, prune, pumpkin, quince, raspberry, spinach, squash, strawberry, sugarbeet, tomato, turf, turnip, walnut, watermelon, and wheat.

Kocide DF: alfalfa, apple, apricot, barley, bean, blackberry, boysenberry, broccoli, Brussels sprout, bulb, cabbage, carrot, cauliflower, celery, cherry, collard, cranberry, cucumber, currant, eggplant, filbert, ginseng, gooseberry, grape, hop, loganberry, melon, nectarine, nursery, oat, onion, ornamental, ornamental tree, pea, peach, pear, pepper, plum, potato, prune, pumpkin, raspberry, rose, spinach, squash, strawberry, sugarbeet, tomato, walnut, and wheat.

Miscellaneous Regulatory Information

• In the March 18, 1998, Federal Register, EPA announced that popcorn and carrot uses were being deleted from six technical grade chlorpyrifos pesticide registrations. These are the registrations granted for the technical grade pesticide, which is used to produce "end use" pesticide products. The EPA required the use cancellations because they have discovered that no tolerance exists (or has ever existed) for chlorpyrifos on carrots or popcorn. The agency will next ask the "end use" registrants to revise their product labels to delete these uses. At this point, it is unclear what action the agency plans to take with respect to popcorn or carrots produced using chlorpyrifos and currently in the channels of trade. The pesticide registration database shows no chlorpyrifos labels currently registered in Washington for use on carrots; however, this message is being sent for your information. The registration database indicates that all of the following products are registered for use in Washington on popcorn:

Chlorfos 15G	Griffin	6622-18-1812
Lorsban 15G	Dow	62719-34
Chlorpyrifos 15G AG	Micro Flo	51036-234
Chlorpyrifos 4E AG	Micro Flo	51036-244
Lorsban 4E	Dow	62719-220 or 62719-23
Nufos 15G	Cheminova	67760-14
Nufos 4E	Cheminova	67760-28

The purpose of this message is twofold: If you have been using products containing chlorpyrifos on carrot or popcorn crops, be aware of the following:

1) These uses are going to be removed from the label, and

2) EPA has yet to resolve how carrot or popcorn crops showing chlorpyrifos residues will be managed.

• In two Federal Register Notices (January 21 and February 5) EPA announced its intention to revoke 871 tolerances and exemptions from the requirement for a tolerance. These revocations are for specific crop-pesticide combinations that EPA believes have no current registrations. EPA proposed revocation of these tolerances, believing that all existing stocks of these pesticide products had been used more than a year ago. A review of the proposed revocations showed two things: 1) Registrations still exist for some of these uses, and 2) Stocks of phosphamidon remain and this compound is currently being used by Washington apple growers.
  
  Based upon the results of this review, WSDA sent the following letter to EPA:

 

CERTIFIED

March 26, 1998

Mr. Jeff Morris, 7508W
U.S. Environmental Protection Agency
Special Review Branch
401 "M" Street SW
Washington, D.C. 20460

RE: Proposed revocation of tolerances and exemptions for pesticides no longer registered for use on specific food crops

Dear Mr. Morris:

In response to a notice via the Reregistration Notification Network (RNN), the Washington State Department of Agriculture (WSDA), in cooperation with Washington State University (WSU), has checked the Crop-Pesticide List of Canceled Uses Associated with the Tolerances Proposed for Revocation by the USEPA on 1/21/98 and 2/5/98. WSDA has verified that it has active registrations for the specific crop-pesticide combinations listed below except for phosphamidon on apple; it is not registered. In the case of phosphamidon, WSDA has confirmation that existing stocks have not been exhausted.

With this in mind, the Washington State Department of Agriculture (WSDA) requests that EPA retain, not revoke, the tolerances for the following uses:

Pesticide	Crop
phosphamidon	apple
trichlorfon	cattle
copper oleate	all crops
cryolite	collard, blackberry, boysenberry, dewberry, loganberry, youngberry*
ethoxyquin	apple
ODDA	nectarine, peach, plum, prune, apricot, cherry
simazine	asparagus, artichoke
ferbam	boysenberry**
propachlor	corn
naled	cucumber, legumes
trifluralin	flax, rape
atrazine	grass
dichlobenil	stone fruit

* use on listed berries is registered under EPA SLN Reg. No. WA980001
** use on boysenberry is registered under EPA SLN Reg. No. WA940029

If you have any questions, please contact this office at (360) 902-2030.

Sincerely,

PESTICIDE MANAGEMENT DIVISION

Clinton L. Campbell
Agricultural Chemical Specialist

 

State Issues

New Registrations

• WSDA has issued a new registration to Gharda USA for its insecticide Pilot 4E. This product is registered for use on the following sites: alfalfa, asparagus, broccoli, Brussels sprout, cabbage, cauliflower, cherry, Chinese cabbage, Christmas tree plantation, collard, corn seed crop, cranberry, dry bulb onion, field corn, filbert, grape, kale, kohlrabi, mint, nectarine, non-bearing apple, non-bearing nectarine, non-bearing peach, non-bearing pear, non-bearing plum, non-bearing prune, peach, radish, rutabaga, sorghum, soybean, strawberry, sugarbeet, sunflower, sweet corn, sweet potato, and turnip.

Section 24c Registrations

• On March 2, 1998, WSDA issued a "me-too" or 3rd party SLN registration to Holland America Bulb Farms for the use of Vineland Formaldehyde Solution to control nematodes, insects, and certain fungi in daffodil and iris bulbs. This SLN only covers use by the Washington Bulb Company.
  
• In late February, WSDA issued two SLN's for the use of two Captan products to control various diseases on raspberries and blackberries. The first SLN (WA980002) is issued for Zeneca's Captan 50-WP. This is a "me-too" registration that is identical to WA950034 issued to Drexel. The Zeneca SLN was issued to support a sub-registration of Micro Flo's Captan 50WP. The Zeneca SLN will not be distributed through regular trade channels. The second SLN (WA980002b) is issued to Micro Flo for its fungicide Captan 50WP. This SLN is a sub-registration to allow Micro Flo's product to clear the channels of trade. Both SLNs expire December 31, 1998, and will not be renewed next year.
  
• On March 12, 1998, WSDA issued an SLN (WA980009) for the use of Drexel's herbicide Diuron 4L to control weeds in hybrid poplar plantations. This is a "me-too" registration, similar to WA920023 for Karmax DF; however, this registration allows for the use of an alternate formulation. This SLN expires December 31, 1998.
  
• On March 13, 1998, WSDA issued a third party SLN (WA980008) to Association of Basin Nurseries for the use of Harvade-5F for defoliation of non-bearing apple nursery stock. This SLN is for use only on trees that will not bear fruit within one year. It will expire on 12/31/98.
  
• On March 26, 1998, WSDA issued an SLN (WA980011) to Platte Chemical for the use of its herbicide Simazine 90 WDG for the control of annual weeds in cabbage grown for seed. This SLN is similar to WA900005 issued for the use of Simazine 4L DF and is being issued because there is insufficient stock of the Simazine 4L DF for use in 1998. This SLN expires December 31, 1998.
  
• On March 9, 1998, WSDA issued an SLN (WA980005) for the use of Platte Chemical's herbicide Prometryn 4L for selective weed control in dill. This SLN expires on December 31, 1998.
  
• On March 6, 1998, WSDA issued a third party SLN (WA980007) to Lefeber Bulb Company for the use of Vineland Formaldehyde Solution to control nematodes, insects, and certain fungi in daffodil and iris bulbs. This SLN expires 12/31/98.
  

Section 24c Cancellations

• On March 2, 1998, WSDA issued a letter canceling SLN WA910026. This SLN had previously been issued to the Lefeber Bulb Company for the use of Vinco Formaldehyde Solution on daffodil and iris bulbs. The SLN was cancelled due to non-payment of registration fees.
  

Section 24c Revisions

• On February 27, 1998, WSDA issued a revision to SLN WA970007. The SLN had previously been issued for the use of Platte's insecticide Diazinon 50W as a dip treatment for grape root stock destined for export to Canada. The revision deletes the expiration date.
  
• On March 10, 1998, WSDA issued a revision to SLN WA970029. This SLN had previously been issued to Platte chemical for the use of its insecticide Dimethoate 400 on peas. The revision removes the expiration date and changes the pollinator protection statement to prohibit applications to blooming Austrian winter peas.
  
• On March 10, 1998, WSDA issued a revision to SLN WA970008. This SLN had previously been issued to Dow AgroSciences for the use of Lorsban 4E on grapes. The revision removed the expiration date.
  
• On March 11, 1998, WSDA issued a revision to SLN WA970015. This SLN had previously been issued for the use of Amvac's Vapam HL Soil Fumigant on fruit orchards. The revision removes the expiration date.
  
• On March 11, 1998, WSDA issued a revision to SNL WA980001. This SLN had previously been issued for the use of Gowan's Cryolite Bait to control various weevils on small berries (blackberries, blueberries, boysenberries, dewberries, loganberries, raspberries, strawberries, and youngberries). The revision changes the use rate from a range of 30 to 40 pounds per acre to 20 to 40 pounds per acre.
  
• On March 13, 1998, WSDA issued a revision to SLN WA970027. This SLN had previously been issued to Wilbur Ellis for the use of its insecticide Digon 400 to control aphids on peas. The revisions include the removal of the expiration date and the addition of a pollinator protection statement.

Miscellaneous Regulatory Information

• WSDA has again expressed concern regarding the use of ammonium thiosulfate as a blossom thinner and has issued the following cautionary statement on the subject:

PESTICIDE REGISTRATION INFORMATION

(March 16, 1998)

Distribution and Sale of Ammonium Thiosulfate (ATS) as a Blossom Thinner

The Washington State Department of Agriculture reminds distributors, dealers, consultants and commercial applicators again this year that use of any product as a blossom thinner is considered a pesticidal use under state and federal law. Prior to distribution, these products must be registered as pesticides by the U.S.E.P.A. and the state of Washington.

ATS is currently registered as a herbicide to control spurge in lawns (under the brand name Spurge X, EPA Reg. No. 9499-1). It is also registered as a commercial fertilizer in Washington and can be legally distributed as a plant nutrient; however, to knowingly distribute ATS as a blossom thinner is in violation of the Federal Insecticide, Fungicide and Rodenticide Act and the Washington Pesticide Control Act.

If you have any questions, please contact the Registration Services Branch at (360) 902-2030.

Return to Table of Contents for the May 1998 issue

Return to Agrichemical and Environmental News Index