California Code of Regulations › Title 3 - Food and Agriculture › Division 4 - Plant Industry › Chapter 3 - Entomology and Plant Quarantine › Subchapter 2 - Nursery Stock › Article 5 - Registration and Certification of Grapevines › Section 3024.5 - Inspection and Testing Procedures

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
					 Except as otherwise provided, inspection and testing procedures described in
					 this section shall be made by the Department or its authorized agents and shall
					 be conducted at times determined suitable by the Department.
(b) The diseases and associated disease
					 agents of concern to this program are listed below in Table I.
TABLE I: Diseases and Disease Agents of
						Concern
Diseases of concern for foundation stock
								obtained from FPS prior to July 1, 2010.
Disease Agent(s)
Grapevine degeneration
European nepoviruses, especially
Grapevine
								fanleaf virus
Grapevine decline
American nepoviruses, especially
Tomato
								ringspot virus
Leafroll
Grapevine leafroll-associated viruses 1, 2,
								3, and 4
Corky bark
Grapevine virus B
Fleck
Grapevine fleck virus
Additional Diseases of concern
								for foundation stock obtained from FPS subsequent to July 1, 2010.
Leafroll
Grapevine leafroll-associated virus
4 strains 5,6, 9, 10, and Car.
Grapevine leafroll-associated virus
								7
Grapevine leafroll-associated virus 2 strain
								RG
Kober stem grooving
Grapevine virus A
(c) Testing. Tests shall be conducted as
					 described in Table II unless the Department approves or requires changes.
(1) Original Foundation Block planting
					 materials: Propagative materials collected from a single grapevine source shall
					 be used to propagate new foundation block candidate vines and to conduct tests
					 for the diseases shown in Table II. New foundation block candidate grapevines
					 shall be tested by FPS.
(2)
					 Foundation block candidate grapevines shall be maintained in a screenhouse,
					 shadehouse, or greenhouse while qualifying tests are in progress. Candidate
					 grapevines, for which all the tests in Table II are negative, are eligible to
					 be planted in a foundation block.
(3) Every grapevine in a foundation block
					 shall be periodically retested at least once every five years, by FPS, for
Grapevine fanleaf virus, Tomato ringspot virus, Grapevine leafroll
					 associated viruses
, and
Grapevine red blotch-associated
					 virus.
(4) Primary and
					 secondary increase blocks shall be tested by the Department for
Grapevine fanleaf virus, Tomato ringspot virus, Grapevine leafroll
					 associated viruses,
and
Grapevine red blotch-associated
					 virus
at least once every five years.
(5) Certified nursery plantings may be tested
					 for
Grapevine fanleaf virus, Tomato ringspot virus, Grapevine leafroll
					 associated viruses,
and
Grapevine red blotch-associated
					 virus
by the Department.
TABLE II: Tests required for Foundation
						Stock
Test/Indicator Plant(s) required for
								selections planted in foundation block before July 1, 2010.
Disease or Disease Agents Tested
								For
St. George grapevine (field indicator, leaf
								symptoms)
Grapevine degeneration and fleck
Cabernet Franc (field indicator, leaf symptoms)
Leafroll and red blotch
LN33 grapevine (field indicator, stem symptoms)
Corky bark
Herbaceous indicator:
Grapevine decline and degeneration
Chenopodium sp., Cucumis sativa,
or
Nicotiana Sp.
Additional Test/Indicator
								Plant(s) required for selections planted in foundation block after July 1,
								2010.
ELISA/PCR
Grapevine fanleaf virus
ELISA/PCR
Tomato ringspot virus
ELISA/PCR
Grapevine leafroll-associated viruses 1, 2,
								3, 4, and 7
Grapevine leafroll-associated virus 2 strain
								RG
Grapevine leafroll-associated virus 4
								strains 5,6, 9, 10, and Car.
Kober 5BB (field indicator, stem symptoms)
Kober stem grooving
PCR
Grapevine virus A
PCR
Grapevine virus B
Additional Test/Indicator
								Plant(s) required for selections planted in foundation block before October 1,
								2016.
PCR
Grapevine red blotch-associated
								virus