WAC 16-354-010
Definitions. "Arabis mosaic viruses"
means a grouping of viruses that are polyhedral, have a
bipartite genome and induce diseases such as bare-bine,
spidery hop, split leaf blotch and hop chlorotic disease. In
combination with satellite RNA, arabis mosaic virus induces
hop nettlehead disease.
"Broken or mutilated stock" 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.
"Certified stock" means planting stock produced from
foundation stock or a registered mother block that complies
with the requirements of this chapter.
"Crown" means a slip or layered stem cutting with visible
buds, that has been grown for one or two years.
"Crown gall" means the disease caused by Agrobacterium
tumefaciens E. F. Sm. & Towns., Conn.
"Department" means the Washington state department of
agriculture.
"Director" means the director of the Washington state
department of agriculture or the director's authorized
representative.
"Downy mildew and/or black rot" means the disease caused
by Pseudoperonospora humuli Miy. & Tak., G. W. Wils. Black
roots caused by this disease may not be certified.
"Fairly clean" means that the plant parts are not matted
or caked with dirt.
"Fairly fresh" means that the roots or cuttings are not
excessively wilted.
"Firm" means that the plant parts are not soft or spongy,
although they may yield to slight pressure.
"Foundation stock" 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 and hop stunt viroid, and which are genetically
uniform. Cuttings or rooted plants, which are used to
establish registered mother blocks shall be furnished to the
applicant for a fee determined by Washington State University.
"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.
"Free from damage caused by mold" means that the plants
shall be free from excessive mold or decay. Plants slightly
affected by mold may be allowed.
"Hop cyst nematode" means the nematode Heterodera humuli
Filipjev.
"Hop stunt viroid" means a group of viroids consisting of
hop stunt viroid and its genetic variants.
"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.
"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.
"Moist" means that the plant parts are reasonably turgid
and not dried to a degree that would affect normal growth.
"Powdery mildew" means the disease caused by Podosphaera
humuli (DC) Burrill = Podosphaera macularis (WALLR.: FR)
Lind.
"Registered mother block" means a planting of hops
established from foundation stock.
"Rootknot nematode" means the nematode Meloidogyne sp.
"Verticillium wilt" means the disease caused by
Verticillium albo-atrum Reinke & Berth. or hop strains of this
organism.
"Virus-like" means a transmissible disorder of unknown
cause.
[Statutory Authority: Chapters 15.14 and 34.05 RCW. 09-18-115, § 16-354-010, filed 9/2/09, effective 10/3/09. Statutory Authority: Chapter 15.14 RCW. 98-09-049, §
16-354-010, filed 4/15/98, effective 5/16/98. 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.]