Section 115.282. Diseases

(a) Potatoes other than Prenuclear seed potatoes. The Department will inspect fields of potatoes at least twice during the growing season. Other inspections, which may include digging, may be made. A final inspection shall be made at shipping time for grade.

(1) First field inspection will be made as early as possible to make accurate identification of diseases.

(2) Second or later inspections will take place at blossom time and before the vines are killed.

(3) Seed lots will be rejected if found to contain more than the following diseases:

Maximum Percent Allowed

Disease	G1 & G2	G3	G4-G8
Mosaic	.25	.5	2
Leaf Roll	.25	.5	1
Spindle Tuber	.25	.5	1
Yellow Dwarf	.25	.5	1
Total Virus including Mosaic, Leaf Roll, Spindle Tuber and Yellow Dwarf	.50	1.0	3
Ring Rot	.00	.00	.00

(4) Maximum percentages allowed for diseases other than those listed in paragraph (3) will be determined by the certification office after identification.

(5) Ring rot, also referred to as Clavibacter michiganense subsp. sepedonicum (synonym: Corynebacterium sepedonicum), found at any time in bin or graded stock will be cause for rejection.

(b) Prenuclear seed potatoes. If Erwinia caratovora pv. caratovora, or Erwinia caratovora pv. atroseptica, or Clavibacter michiganense subsp. sepedonicum (synonym: Corynebacterium sepedonicum), or potato spindle tuber viroid, or potato leafroll virus, or potato virus A, M, S, X or Y is detected in a seed lot for which Prenuclear certification is sought, that particular seed lot will be rejected. Detection of virus vectors in a seed lot for which Prenuclear certification is sought will be grounds for rejection of the entire lot.

The provisions of this § 115.282 amended February 29, 1980, effective March 1, 1980, 10 Pa.B. 911; amended April 6, 1990, effective April 7, 1990, 20 Pa.B. 1878; amended April 2, 1993, effective April 3, 1993, 23 Pa.B. 1558; amended May 22, 2009, effective June 22, 2009, 39 Pa.B. 2577. Immediately preceding text appears at serial pages (276762) to (276763).

Notation

Authority

The provisions of this § 115.282 amended under The Pennsylvania Seed Act of 1965 (3 P. S. § § 285-1—285-11); and the act of April 11, 1929 (P. L. 488, No. 205) (3 P. S. § § 291—297); amended under 3 Pa.C.S. § § 7111 and 7117.

Cross References

This section cited in 7 Pa. Code § 115.291 (relating to winter test).