New York Codes, Rules and Regulations › Title 1 - DEPARTMENT OF AGRICULTURE AND MARKETS › Chapter III - Plant Industry › Subchapter A - Inspection and Sale of Seeds (Article 9, Agriculture and Markets Law) › Part 107 - Seed Potato Certification Standards For Certified Classes › Section 107.3 - Restrictions applying to the production of certified class seed

Current through Register Vol. 46, No. 28, July 10, 2024
(a)
Varieties.
Varieties must meet the approval of the certifying agency
					 to be eligible for certification.
(b)
Land requirements.
Seed potatoes shall not be planted on land where ring rot
					 infected potatoes were produced the previous year.
(c)
Separation of fields.
Fields for inspection must be separated from each other and
					 from other potatoes by a vacant space of at least one planting row; six feet is
					 recommended.
(d)
Disease in nearby fields.
Any portion of a field entered for certification which is
					 within 200 feet of potatoes showing 10 percent or more virus disease or more
					 than five percent leaf roll, will be rejected.
(e) Seed grown on farms where bacterial ring
				  rot is found during the current or previous season is not eligible for
				  designation as "Certified-Uihlein Generation 1," "Certified-Uihlein Generation
				  2," or "Certified-Uihlein Generation 3."
(f)
Inspection procedures.
Field and bin inspections shall be conducted on the basis
					 of a visual observation of sample plants and tubers under growing conditions
					 and during storage. A minimum of two field inspections shall be made during the
					 growing season with a visual examination being made of a minimum of 100 plants
					 for each planted acre. Inspections of bins and storage areas shall include a
					 visual inspection of at least 100 stored tubers from each harvested acre.
					 Certification shall not extend to diseases which cannot be observed on the
					 basis of a visual inspection of plants and tubers.
(g)
Tolerance at field
				  inspection.
Fields are to be kept rogued and are subject to inspection
					 at any time. Upon inspection seed lots shall show not more than the following
					 tolerances:
Factor
First inspection
								percent
2nd or later inspection
								percent
Mosaics
3.00
1.00
Leaf roll
3.00
1.00
Other virus
1.00
.50
Spindle tuber
1.00
0.10
Total virus and spindle tuber
4.00
2.00
Fusarium1 and
								verticillium wilt
2.00
5.00
Varietal mixture
.25
Ring rot2
0.00
0.00
(h)
Interpretation of tolerances.
Seed lots which comply with the provisions of this standard
					 and which are found by inspection of an adequate representative sample to
					 contain no more than the specified tolerance of plants or tubers showing
					 visible symptoms of the diseases and defects mentioned will be approved for
					 certification; however, no assurance is implied that these diseases and defects
					 may not be present in a latent form or in greater amounts or even that the
					 inspection of larger samples might not reveal the presence of amounts in excess
					 of stated tolerances. Furthermore, with special reference to ring rot,
					 certification implies that both the growing crop and the harvested lot have
					 been inspected and that no evidence of ring rot has been found, but does not
					 imply that the lot is absolutely free from this disease. Precautions always
					 should be taken to guard against the increase or spread of this disease.
(i)
Roguing.
The grower is responsible for roguing all diseased and
					 abnormal plants that appear during the growing season. Early removal is
					 extremely important in preventing the spread of virus diseases; both the vines
					 and tubers should be carried from the field.
(j)
Florida test.
One or more representative samples from each seed lot shall
					 be submitted from each field for planting in the Florida test plot. The number
					 of tubers required to be submitted per sample shall be determined by the
					 certifying agency. Tubers selected for the Florida test shall not be smaller
					 than 1 1/2 inches nor larger than 2 1/4 inches. Florida test results shall
					 not show a total in excess of five percent virus (mosaics, leaf roll, other
					 virus) and spindle tuber viroid. Seed potatoes shipped before winter test
					 readings are available will be certified if field, harvest and/or bin readings
					 are within required tolerances.
(k)
Unsuitable fields.
The certifying agency may deny certification to any field
					 or seed lot which, in its opinion, would be likely to produce potatoes
					 unsuitable for certified seed stock. Consideration for denial may be given to
					 unfavorable factors, such as unsuitable cultural conditions, weeds, chemical
					 damage and high aphid population.
Footnotes
1 Fusarium wilt is understood to mean the diseases caused
					 by Fusarium solani var. eumartii and Fusarium oxysporum.
2 Ring rot found at any time in bine or graded stock will
					 cause rejection.