Section 115.82. Isolation requirements

(a) Fields in which commercial hybrid field corn are being produced shall be so located that the female, or seed parent is not less than 660 feet from other corn of a different kernel color or type (field, sweet, pop, flint, white or red) in all directions, including the diagonal.

(b) Small areas (not larger than 1% of the area of the seed producing field) of corn, closer than 660 feet to the seed producing field will not be considered contaminating, if the pollen is controlled. Failure to properly control pollen shedding of the small areas shall be cause for rejection.

(c) Large areas (greater than 1% of the area of the seed producing field) of corn, closer than 660 feet to the seed producing field will be cut to the ground before the seed parent has 3% receptive silks. Where the contaminating corn is of the same type, then this distance may be modified by the size of the crossing field, and by the planting of border rows of pollen or male parent.

(d) The following table indicates the minimum number of border rows required for fields of various sizes, when located at different distances from other corn:

Minimum	Minimum Numbers of Male Border
Distance	Rows Required
From Contaminant	0-20 Acres	›20 Acres
660	0	0
570	4	2
490	6	2
410	8	4
330	10	6
270	12	8
210	14	10
150	16	12
90	18	14
‹90	24*	16**

*minimum of 60' including border rows.

**minimum of 40' including border rows.

(e) The requirements for outside male rows shall apply to all sides of the crossing-field exposed to contamination from other corn, except that a requirement for only two male rows may be disregarded where it would necessitate planting across the row-ends of the crossing-field.

(f) Border rows of male shall be adjacent to and not separated from the female rows.

(g) Sufficient seed of male should be obtained to plant the maximum number of outside male rows that would be required by any possible rearrangement of plantings by neighbors, or by the grower himself in planting nearby fields of corn. The plot should be insured against any changes.

The provisions of this § 115.82 amended September 26, 1975, effective September 27, 1975, 5 Pa.B. 2522; amended May 22, 2009, effective June 22, 2009, 39 Pa.B. 2577. Immediately preceding text appears at serial pages (276741) to (276742).

Notation

Authority

The provisions of this § 115.82 amended under 3 Pa.C.S. § § 7111 and 7117.