Washington Administrative Code › Title 16 - Agriculture, Department of (See also Titles 24, 60, and 142) › SEEDS AND PLANTING STOCK CERTIFICATION › Chapter 16-324 - Certification of seed potatoes › Section 16-324-361 - Definitions

Current through Register Vol. 24-14, July 15, 2024
"Certification" means that the lot of seed potatoes was
				  inspected and meets the requirements of this chapter.
"Cull" means any lot of potatoes rejected for certification
				  for any reason.
"Department" means the department of agriculture of the state
				  of Washington.
"Director" means the director of the department of
				  agriculture or his/her duly appointed representative.
"Disease tested" means tested for and found free of all of
				  the following diseases: Potato virus A (PVA), potato virus M (PVM), potato
				  virus S (PVS), potato virus X (PVX), potato virus Y (PVY), potato leafroll
				  virus (PLRV), potato mop top virus (PMTV), potato spindle tuber viroid (spindle
				  tuber),
Erwinia carotovora
ssp.
carotovora
(soft rot),
Erwinia caro-tovora
ssp.
atroseptica
(black leg) and
Clavibacter
				  michigan-ense
spp.
sepedonicus
(ring rot).
"ELISA testing" means laboratory testing by enzyme-linked
				  immunosorbant assay or other equivalent methodologies.
"Micropropagated" means potato stock propagated using aseptic
				  laboratory techniques and culture media to promote plant tissue growth.
"Microtubers" means tubers produced in vitro by a
				  micropropagated plant or plantlet.
"Minitubers" means tubers produced under controlled
				  greenhouse conditions.
"Nematode" means plant parasitic nematodes capable of
				  infesting potatoes, including but not limited to the genus
Meloidogyne.
"Nuclear stock" means plantlets, microtubers, minitu-bers, or
				  seed potatoes produced from prenuclear stock, and grown in the field for the
				  first time.
"Plot" means a seed potato planting that is 0.25 acre or less
				  in size.
"Powdery scab" means the disease caused by the fungus
Spongospora subterranea
.
"Prenuclear" means micropropagated plants or tubers and
				  plants or minitubers produced in a greenhouse.
"Quarantine pest" means a pest of potential economic
				  importance and not yet present in the state, or present but not widely
				  distributed and being officially controlled.
"Recertification" means the process of certifying a seed lot
				  that was certified the previous year.
"Rogue" means removing diseased or undesirable plants,
				  including all associated plant parts, from a seed potato field.
"Seed lot" means a field, in whole or in part, or a group of
				  fields producing seed potatoes, or the potato tubers harvested from a seed
				  potato field.
"Seed potato farm" means a separate seed potato enterprise,
				  including all land, equipment, storages and all facilities used to produce only
				  certified seed potatoes.
"Seed potatoes" means vegetatively propagated tubers used for
				  potato production.
"Seed source" means seed potatoes produced by an individual
				  seed potato farm within a particular seed production area.
"Trace" means a barely perceivable indication of plant
				  disease that amounts to less than 0.001 percent of sample.
"Tolerance" means the maximum acceptable percentage of potato
				  plants or tubers that is diseased, infected by plant pests, defective or
				  off-type based on visual inspection or laboratory testing by the director or
				  other authorized person.
"Unit method" means a method of planting in which cut seed
				  pieces from one tuber are dropped consecutively in a row, or in which all
				  tubers from one plant are dropped consecutively in a row.
Statutory Authority:
					 RCW
					 15.14.015 and
					 chapter
					 34.05 RCW. 13-12-014,
					 § 16-324-361, filed 5/24/13, effective 6/24/13. Statutory Authority:
					 Chapters 15.14 and
					 34.05 RCW. 07-11-010, §
					 16-324-361, filed 5/3/07, effective 6/3/07. Statutory Authority: Chapter 15.14
					 RCW. 02-12-010, § 16-324-361, filed 5/23/02, effective 6/23/02; 00-20-070,
					 § 16-324-361, filed 10/3/00, effective 11/3/00. Statutory Authority: RCW
					 15.14.030. 97-11-028, § 16-324-361, filed 5/14/97, effective
					 6/14/97.