WSR 98-06-082

PROPOSED RULES

DEPARTMENT OF AGRICULTURE

[Filed March 4, 1998, 9:14 a.m.]

Original Notice.

Preproposal statement of inquiry was filed as WSR 97-24-098.

Title of Rule: Hop rootstocks--Certification.

Purpose: To reevaluate the current rule due to recent introduction of hop powdery mildew, a plant disease formerly absent in this state. Also, updating obsolete requirements and language.

Statutory Authority for Adoption: Chapter 15.14 RCW.

Statute Being Implemented: Chapter 15.14 RCW.

Summary: The introduction of hop powdery mildew, a pest not previously occurring in Washington state, made reevaluation of this rule necessary.

Reasons Supporting Proposal: The existing requirement for a 0% tolerance for hop powdery mildew is no longer feasible. The hop industry feels monitoring the disease through an additional field inspection will furnish information necessary to regulate rootstock effectively in the future. In addition, the age of the existing rule makes updating it necessary, so that it is consistent with current industry and program practices.

Name of Agency Personnel Responsible for Drafting: Mary Toohey, 1111 Washington Street, Olympia, WA 98504-2560, (360) 902-1907; Implementation and Enforcement: Tom Wessels, 1111 Washington Street, Olympia, WA 98504-2560, (360) 902-1984.

Name of Proponent: Washington Hop Commission and Washington State Department of Agriculture, Laboratory Services Division, governmental.

Rule is not necessitated by federal law, federal or state court decision.

Explanation of Rule, its Purpose, and Anticipated Effects: The hop certification program was established to ensure to the extent possible relatively disease-free, healthy, and genetically uniform rootstock is available to the hop growers. The existing rule allowed 0% tolerance for hop powdery mildew in certified mother blocks, as this disease was not present in the state until recently. Hop powdery mildew is now widespread, and the Hop Commission has proposed monitoring the disease through a third inspection to determine more information about it, rather than enforcing an arbitrary tolerance. The existing rule is obsolete or contradictory in other areas - for instance, in not acknowledging the role of greenhouse grown stock in establishment of mother blocks, in neglecting to specifically authorize the longstanding postharvest practice of inspection for grade, in requiring inspection of rootstock at digging (an obsolete practice), etc. The proposal makes the rule consistent with current industry and program practice.

Proposal Changes the Following Existing Rules: Described above.

No small business economic impact statement has been prepared under chapter 19.85 RCW. (1) This program is voluntary. (2) There are only six active participants in this program. (3) Fees were put into place at the request of the affected industry.

Section 201, chapter 403, Laws of 1995, does not apply to this rule adoption.

Hearing Location: Washington State Fruit Commission, 105 South 18th Street, Yakima, WA 98901, phone (509) 453-4837, on April 7, 1998, at 11:00 a.m.

Assistance for Persons with Disabilities: Contact Cathy Jensen by March 31, 1998, TDD (360) 902-1996, or (360) 902-1976.

Submit Written Comments to: Mary Toohey, Assistant Director, Washington State Department of Agriculture, Laboratory Services Division, P.O. Box 42560, Olympia, WA 98504-2560, FAX (360) 902-2094, by April 7, 1998.

Date of Intended Adoption: April 14, 1998.

February 18, 1998

Mary A. Martin Toohey

Assistant Director

AMENDATORY SECTION (Amending Order 5083, filed 8/28/95, effective 9/28/95 WAC 16-354-005 Hop rootstock--General. (1) Rootstocks of hops and hop plants (Humulus Lupulus L.) may be designated as foundation stock, registered stock ((and)) or certified stock ((when inspected, tested and found to be discernibly free from)), if the rootstocks and plants from which they were produced have been inspected and tested in accordance with procedures and requirements outlined in rule. At a minimum, these procedures and requirements deal with Ilar viruses and virus-like diseases, downy mildew, ((powdery mildew,)) verticillium wilt, crown gall, rootknot nematode, hop cyst nematode ((or)) and other serious pests((, by procedures and inspections outlined in this program)).

(2) ((The)) Issuance of a state of Washington certified plant tag ((or)), stamp, or other document under this chapter ((affirms)) means only that the tagged ((or)), stamped ((hop rootstock)), or otherwise documented rootstock or plant stock has been subjected to ((certification)) procedures and requirements described in this chapter and determined to ((determine)) be in compliance with its standards ((by the department)) and requirements. The department disclaims all express or implied warranties, including without limitation((,)) implied warranties of merchantability and fitness for particular purpose, regarding all plants, plant parts, and plant materials under this chapter.

(3) The department is not responsible for disease, genetic disorders, off-type, failure of performance, mislabeling, or otherwise, in connection with this chapter. No grower, nursery dealer, government official((,)) or other person is authorized to give any expressed or implied warranty, or to accept financial responsibility on behalf of the department regarding this chapter.

(4) Participation in the hop rootstock certification program ((shall be)) is voluntary.

[Statutory Authority: RCW 15.14.030 (2), (5). 95-18-034 (Order 5083), 16-354-005, filed 8/28/95, effective 9/28/95. Statutory Authority: Chapters 15.14 and 17.24 RCW. 91-08-016 (Order 2077), 16-354-005, filed 3/27/91, effective 4/27/91. Statutory Authority: Chapter 15.14 RCW. 85-15-046 (Order 1867), 16-354-005, filed 7/16/85; Order 1264, 16-354-005, filed 5/10/72.]

AMENDATORY SECTION (Amending Order 5083, filed 8/28/95, effective 9/28/95 WAC 16-354-010 Definitions. (((1) "Ilar virus" means a grouping of viruses, including Apple Mosaic Virus and Prunus Necrotic Ringspot, which share common characteristics including spherical in shape, with genetic material in three different particles and commonly inducing ring spots in hosts.

(2) "Virus-like" means a transmissible disorder of unknown cause.

(3) "Index" means to determine virus infection by means of inoculation from the plant to be tested to an indicator plant or by any other method.

(4) "Foundation rootstock" means slips or rhizomes, cuttings and rooted plants taken from hop stocks established and maintained by Washington State University, that are indexed, and believed to be free from known viruses and which will be genetically uniform. Cuttings or rooted plants, which shall be used to establish certified mother blocks shall be furnished to the applicant for a fee determined by Washington State University.

(5) "Certified mother block" means a planting of hop stocks established from foundation rootstock.

(6) "Certified rootstock" means rootstock produced from certified mother blocks and meeting the requirements as herein provided.

(7) "Verticillium wilt" means the disease caused by Verticillium albo-atrum Reinke & Berth. or hop strains of this organism.

(8) "Downy mildew and/or black rot" means the disease caused by Pseudoperonospora humuli Miy. & Tak., G. W. Wils. Black roots caused by this disease shall not be permitted.

(9) "Powdery mildew" means the disease caused by Sphaerotheca humuli (DC) Burrill = Sphaerotheca macularis (WALLR.: FR) Lind.

(10) "Crown gall" means the disease caused by Agrobacterium tumefaciens E. F. Sm. & Towns., Conn.

(11) "Rootknot nematode" means the nematode Meloidogyne sp.

(12) "Hop cyst nematode" means the nematode Heterodera humuli Filipjev.

(13) "Crown" means a slip or layered stem cutting with visible buds, that has been grown for one or two years.

(14) "Fairly fresh" means that the roots or cuttings are not excessively wilted.

(15) "Firm" means that the plant parts are not soft or spongy, although they may yield to slight pressure.

(16) "Moist" means that the plant parts are reasonably turgid and not dried to a degree that would affect normal growth.

(17) "Fairly clean" means that the plant parts are not matted or caked with dirt.

(18) "Free from damage caused by mold" means that the plants shall be free from excessive mold or decay. Plants slightly affected by mold shall be allowed.

(19) "Free from damage caused by freezing injury" means that the roots shall be of a normal color and only moderately affected by discolored roots which affect the normal growth of the plant.

(20) "Broken or mutilated rootstock" means the breaking of the root section or splitting of the plant part or other mechanical injury that would affect the normal growth of the plant.

(21) "Department" means the Washington state department of agriculture.

(22) "Director" means the director of the Washington state department of agriculture or the director's authorized representative.)) (1) "Broken or mutilated rootstock" means the breaking of the root section or splitting of the plant part or other mechanical injury that would affect the normal growth of the plant.

(2) "Certified mother block" means a planting of hop stocks established from foundation rootstock.

(3) "Certified rootstock" means rootstock produced from certified mother blocks and meeting the requirements as herein provided.

(4) "Crown" means a slip or layered stem cutting with visible buds, that has been grown for one or two years.

(5) "Crown gall" means the disease caused by Agrobacterium tumefaciens E. F. Sm. & Towns., Conn.

(6) "Department" means the Washington state department of agriculture.

(7) "Director" means the director of the Washington state department of agriculture or the director's authorized representative.

(8) "Downy mildew and/or black rot" means the disease caused by Pseudoperonospora humuli Miy. & Tak., G. W. Wils. Black roots caused by this disease shall not be permitted.

(9) "Fairly clean" means that the plant parts are not matted or caked with dirt.

(10) "Fairly fresh" means that the roots or cuttings are not excessively wilted.

(11) "Firm" means that the plant parts are not soft or spongy, although they may yield to slight pressure.

(12) "Foundation rootstock" means planting material taken from hop stocks established and maintained by Washington State University, which are indexed and believed to be free from known viruses. Such stock must, as much as practicable, be genetically uniform.

(13) "Free from damage caused by freezing injury" means that the roots shall be of a normal color and only moderately affected by discolored roots which affect the normal growth of the plant.

(14) "Free from damage caused by mold" means that the plants shall be free from excessive mold or decay. Plants slightly affected by mold shall be allowed.

(15) "Hop cyst nematode" means the nematode Heterodera humuli Filipjev.

(16) "Ilar virus" means a grouping of viruses, including Apple Mosaic Virus and Prunus Necrotic Ringspot, which share common characteristics including spherical in shape, with genetic material in three different particles and commonly inducing ring spots in hosts.

(17) "Index" means to determine virus infection by means of inoculation from the plant to be tested to an indicator plant or by any other method.

(18) "Moist" means that the plant parts are reasonably turgid and not dried to a degree that would affect normal growth.

(19) "Powdery mildew" means the disease caused by Sphaerotheca humuli (DC) Burrill = Sphaerotheca macularis (WALLR.: FR) Lind.

(20) "Rootknot nematode" means the nematode Meloidogyne sp.

(21) "Verticillium wilt" means the disease caused by Verticillium albo-atrum Reinke & Berth. or hop strains of this organism.

(22) "Virus-like" means a transmissible disorder of unknown cause.

[Statutory Authority: RCW 15.14.030 (2), (5). 95-18-034 (Order 5083), 16-354-010, filed 8/28/95, effective 9/28/95. Statutory Authority: Chapters 15.14 and 17.24 RCW. 91-08-016 (Order 2077), 16-354-010, filed 3/27/91, effective 4/27/91. Statutory Authority: Chapter 15.14 RCW. 85-15-046 (Order 1867), 16-354-010, filed 7/16/85; Order 1264, 16-354-010, filed 5/10/72; Order 1023, Regulation 1, filed 6/16/66; Order 996, Regulation 1, filed 11/30/65; Order 947, Regulation 1, filed 4/13/64.]

AMENDATORY SECTION (Amending Order 5000, filed 8/10/93, effective 9/10/93 WAC 16-354-020 Field standards for production of certified hop rootstock. (1) ((Land)) Certified rootstock may be produced only from certified mother blocks. In order to be a certified mother block, a proposed hop planting site must meet all of the following requirements:

(((a) New land (land that has never grown hops), proposed for the establishment of certified mother blocks, shall be approved by the department prior to planting.

(b) A certified mother block to be eligible for the production of certified rootstock shall be planted in a site that has been out of hop production for three years (poles and trellis removed). The site shall be inspected the season prior to planting. Provided that greenhouse grown certified plants may be planted the same year of site approval, with planting starting on or after August 15th. Sites with residual hop plants or with hop hullings present shall be rejected.

(c) Hop hullings shall not be spread over proposed planting

sites prior to and/or during certified rootstock production.

(2) Isolation requirements:

(a) A field to be eligible for production of certified hop rootstock shall be separated by a strip of ground at least twenty-one feet in width from any other hop plants.

(b) A grower of certified hop rootstocks may grow more than one hop variety or strain: Provided, That each variety or strain is separated by a hop plant free buffer strip not less than twenty-one feet in width.

(3) Plant requirements:

(a) Only foundation rootstock shall be planted to establish a certified mother block for the production of certified rootstock.

(b) Certified mother blocks shall remain in place no more than four growing seasons: Provided, That after four years, rootstock to be certified may be moved, if approved by the department after consultation with a Washington State University pathologist, to a new approved site.

(c) If, during inspection, a male plant is found and that plant has pollinated female hop plants (seeded), the mother block site will be disqualified beginning in the year following discovery of the male plants. For the growing season in which the male plants are detected, the rootstock from that site may be dug and sold as certified while in the dormant stage.

(d) In roguing, growers shall dig and immediately destroy all low yielding, unhealthy appearing, diseased or otherwise abnormal plants.

(e) Plant pests and weeds shall be effectively controlled.)) (a) The site must be inspected and approved by the department during the growing season immediately prior to planting. An exception may be made to allow inspection and planting during the same growing season, if exclusively greenhouse grown certified plants are planted on or after August 15th.

(b) The site must have been out of hop production, and all poles and trellis removed, for a minimum of three full growing seasons prior to planting.

(c) The site must be entirely free of residual hop plants or hop hullings.

(d) The site must be separated from any other hop plants by a strip of land at least twenty-one feet wide.

(2) A certified mother block must meet the following requirements:

(a) The certified mother block must consist of no more than one hop variety or strain. Certified mother blocks of different varieties or strains must be separated at all points by a strip of land at least twenty-one feet wide and free of hop plants.

(b) Any material planted in a certified mother block must meet one of the following criteria:

(i) Foundation rootstock produced by Washington State University;

(ii) Rootstock from another certified mother block;

(iii) Growing plants or cuttings from foundation mother plants grown by Washington State University; or

(iv) Growing plants or cuttings from another certified mother block.

(c) Plant material, including rootstock and plants described in (b)(ii) and (iv) of this subsection, may be moved from one certified mother block to another certified mother block site only after appropriate testing by a Washington State University plant pathologist and written approval by the department.

(d) A certified mother block must be kept free of hop hullings at all times.

(e) No certified mother block location may retain certification for more than:

(i) Four consecutive growing seasons, if the certified mother block was produced from rootstock; or

(ii) Five consecutive growing seasons, if the certified mother block was produced from cuttings or growing plants.

(f) If a male plant or pollinated female plant is found during any inspection, the grower may harvest certified rootstock from the certified mother block for the subsequent harvest only. After this harvest, the mother block site must be decertified.

(g) Plant pests and weeds must be effectively controlled.

(h) Growers shall rogue (i.e., dig and remove) and immediately destroy all male, diseased, unhealthy appearing or otherwise abnormal plants. For purposes of assessing disease intensity, an exception may be made for plants exhibiting powdery mildew symptoms.

[Statutory Authority: Chapter 15.14 RCW. 93-17-019 (Order 5000), 16-354-020, filed 8/10/93, effective 9/10/93. Statutory Authority: Chapters 15.14 and 17.24 RCW. 91-08-016 (Order 2077), 16-354-020, filed 3/27/91, effective 4/27/91. Statutory Authority: Chapter 15.14 RCW. 85-15-046 (Order 1867), 16-354-020, filed 7/16/85; 79-06-038 (Order 1631), 16-354-020, filed 5/17/79; Order 1264, 16-354-020, filed 5/10/72; Order 1023, Regulation II, filed 6/16/66; Order 996, Regulation II, filed 11/30/65; Order 947, Regulation II, filed 4/13/64.]

AMENDATORY SECTION (Amending Order 2077, filed 3/27/91, effective 4/27/91 WAC 16-354-030 ((Hop rootstock)) Certified mother block inspections. (((1) The first inspection shall be for downy mildew, and other diseases and pests.

(2) The second inspection, depending on suitable weather conditions, shall be primarily for detection of Ilar viruses, and virus-like diseases.

(3) The presence of verticillium wilt, detected in any inspection, shall disqualify the field.

(4) Rootstocks. The planting material (slips or rhizomes, layered stem cuttings, or crowns) shall be inspected at digging and/or at planting time to determine freedom from serious pests.)) (1) A minimum of three inspections per year will be conducted by the department at each certified mother block. Additional inspections may be conducted as needed.

(2) Timing and inspection methods will vary, depending on weather conditions, the disease or pest being sought, and other factors.

(3) The first inspection is intended primarily to detect downy mildew, as well as other diseases and pests.

(4) The second inspection is intended primarily to detect Ilar viruses and virus-like diseases.

(5) The third inspection is intended primarily to detect powdery mildew, as well as other diseases and pests.

(6) Inspection reports may contain observations and information on diseases, pests, and other factors for which no specific tolerances are established or which do not affect the certification status of the rootstock or hop plants.

(7) The presence of verticillium wilt, detected at any time, shall cause immediate decertification of the site. The grower must dig and destroy all affected plants immediately. Affected material may be removed from the site under suitable precautions only by a Washington State University plant pathologist or the department for diagnostic or verification purposes.

[Statutory Authority: Chapters 15.14 and 17.24 RCW. 91-08-016 (Order 2077), 16-354-030, filed 3/27/91, effective 4/27/91. Statutory Authority: Chapter 15.14 RCW. 85-15-046 (Order 1867), 16-354-030, filed 7/16/85; Order 1264, 16-354-030, filed 5/10/72; Order 1023, Regulation III, filed 6/16/66; Order 996, Regulation III, filed 11/30/65; Order 947, Regulation III, filed 4/13/64.]

AMENDATORY SECTION (Amending Order 2077, filed 3/27/91, effective 4/27/91 WAC 16-354-040 Hop rootstock certification application and fees. (1) Application for inspection and testing of certified mother blocks and certified stock shall be filed with the department by April 1 of each year accompanied by a seventy-five dollar application fee.

(2) As a condition of participation in the hop rootstock certification program, the applicant grower ((shall)) must furnish to the department all requested information pertinent to the operation of the ((hop rootstock certification)) program and ((shall)) must give ((his/her)) consent to the department to take material from certified mother blocks and/or greenhouses for examination and testing.

(((2) Application for inspection and testing of certified mother blocks and certified stocks shall be filed with the department by April 1 of each year accompanied by a seventy-five dollar application fee.))

(3) Field inspection fees ((shall be)) are sixteen dollars for each acre per inspection with a minimum fee of eighty dollars for five acres or less per inspection.

(4) Fees for inspection of harvested rootstock for grade, phytosanitary certification, or other purposes are assessed at the appropriate rate established in WAC 16-401-025.

(5) Payment for each inspection ((of certified mother blocks and nursery stock for registration and certification shall be made)) is due upon completion of the inspection. Billing ((to the nursery stock grower shall)) may be ((made by the plant services division)) arranged subject to department policies and processes.

[Statutory Authority: Chapters 15.14 and 17.24 RCW. 91-08-016 (Order 2077), 16-354-040, filed 3/27/91, effective 4/27/91. Statutory Authority: Chapter 15.14 RCW. 85-15-046 (Order 1867), 16-354-040, filed 7/16/85; 79-06-038 (Order 1631), 16-354-040, filed 5/17/79; Order 1264, 16-354-040, filed 5/10/72; Order 1023, Regulation IV, filed 6/16/66; Order 996, Regulation IV, filed 11/30/65; Order 947, Regulation IV filed 4/13/64.]

AMENDATORY SECTION (Amending Order 1867, filed 7/16/85)

WAC 16-354-050 Hop rootstock ((tagging)) tags and identity. (1) ((Tagging. The department shall issue a certificate covering hop rootstock that meets the requirements of the hop rootstock certification program and authorize the use of official certification tags for the identification of such rootstock.)) Application for inspection and testing of certified mother blocks and certified stock shall be filed with the department by April 1 of each year accompanied by a seventy-five dollar application fee.

(2) ((Identity.)) Any person selling ((certified)) or offering for sale hop rootstock ((shall be)) bearing a certification tag or otherwise identified as certified is responsible for the ((identity of the stock bearing each tag and for the stock meeting the requirements of the hop rootstock certification program.)) following:

(a) Accurately identifying the rootstock as to variety and year of harvest;

(b) Accurately identifying the rootstock as complying with all of the conditions of the certified hop rootstock program.

(3) Any person((s)) issued ((tags authorized by the certification program shall account for stock produced and sold, and keep records as may be necessary. Containers for hop rootstocks shall be new)) certification tag(s) must keep written records of stock produced and sold. These records must be produced at the request of the department.

[Statutory Authority: Chapter 15.14 RCW. 85-15-046 (Order 1867), 16-354-050, filed 7/16/85; Order 1264, 16-354-050, filed 5/10/72; Order 1023, Regulation V, filed 6/16/66; Order 996, Regulation V, filed 11/30/65; Order 947, Regulation V, filed 4/13/64.]

AMENDATORY SECTION (Amending Order 5083, filed 8/28/95, effective 9/28/95 WAC 16-354-070 Hop rootstock field standards. (1) The unit of certification ((shall be the entire lot within the field standing at the time of inspection)) is the entire certified mother block.

(2) ((Specific requirements. (Percentage tolerances))) Each entire certified mother block may have no more than the following percent of affected plants:

((Certified))

Tolerance

Downy mildew 1%

Visible nematode((s (visible)))

damage 1%

Verticillium wilt 0

Ilar viruses 0

((Powdery mildew 0))



[Statutory Authority: RCW 15.14.030 (2), (5). 95-18-034 (Order 5083), 16-354-070, filed 8/28/95, effective 9/28/95. Statutory Authority: Chapters 15.14 and 17.24 RCW. 91-08-016 (Order 2077), 16-354-070, filed 3/27/91, effective 4/27/91. Statutory Authority: Chapter 15.14 RCW. 85-15-046 (Order 1867), 16-354-070, filed 7/16/85; Order 1264, 16-354-070, filed 5/10/72.]

AMENDATORY SECTION (Amending Order 2077, filed 3/27/91, effective 4/27/91 WAC 16-354-100 Hop rootstock tolerances. (1) In order to allow for variations incident to proper grading and packing, not more than a combined total of six percent, by count, of the rootstocks in any lot shall fail to meet the requirements of Washington No. 1, and not more than six percent of the rootstock shall have rhizomes or layered stem cuttings less than five inches in length.

(2) In order to insure lot uniformity, no individual container within a lot may contain more than one and one-half times the established tolerance.

(3) Hop plants shall be packed to retain a fresh condition.

(4) The department may inspect rootstock from certified mother blocks after harvest and packing for the purpose of verifying that it meets grades and standards established in rule.

[Statutory Authority: Chapters 15.14 and 17.24 RCW. 91-08-016 (Order 2077), 16-354-100, filed 3/27/91, effective 4/27/91. Statutory Authority: Chapter 15.14 RCW. 85-15-046 (Order 1867), 16-354-100, filed 7/16/85.]

REPEALER

The following section of the Washington Administrative Code is repealed:

WAC 16-354-002 Promulgation.

Legislature Code Reviser

Register

Washington State Code Reviser's Office