Washington Administrative Code › Title 16 - Agriculture, Department of (See also Titles 24, 60, and 142) › SEEDS AND PLANTING STOCK CERTIFICATION › Chapter 16-354 - Hop planting stock certification › Section 16-354-010 - Definitions

Current through Register Vol. 24-14, July 15, 2024
"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.