1.
Isolation.
a. Seed parent
increases (AxB). Fields or parts of fields acceptable for production of seed
parents to be used for the production of commercial hybrid seed must be so
located that the seed parent is not less than two thousand six hundred forty
feet [804.67 meters] from fields of other kinds or varieties that could provide
a source of contamination, or from fields of the same variety that do not meet
varietal purity requirements for certification. The A-line and B-line must be
separated by an unplanted strip of ground adequate to prevent mechanical
mixture.
b. Maintainer and restorer
increases. Fields or parts of fields acceptable for production of pollinator
lines must be so located that the line is not less than thirty feet [9 meters]
from fields of other kinds or varieties which could provide a source of
contamination, or from fields of the same variety that do not meet varietal
purity requirements for certification. Before inspection, the field must be
isolated from inseparable crops by a strip at least five feet [1.52 meters]
wide to prevent mechanical contamination.
c. Commercial hybrids. Fields or parts of
fields acceptable for production of commercial hybrid seed must be no less than
three hundred thirty feet [100.58 meters] from fields of other kinds or
varieties that would provide a source of contamination, or from fields of the
same variety that do not meet varietal purity requirements for certification.
Seed parent and restorer lines must be separated from each other by an
unplanted strip of ground adequate to prevent mechanical mixture.
2.
Specific field
standards.
|
|
A-Line
|
B- and R-Lines
|
Commercial
|
|
Factor
|
Foundation
|
Foundation
|
Hybrid Certified
|
|
Pollen shedders
|
1:3,000
|
N/A
|
N/A
|
|
Other varieties *
|
1:3,000
|
1:3,000
|
1:3,000
|
|
Inseparable other crops
|
1:30,000
|
1:30,000
|
1:5,000
|
|
Prohibited noxious weed seeds **
|
none
|
none
|
none
|
*Other varieties include plants that can be differentiated
from the variety being inspected, but may not include variants that are
characteristic of the variety.
**The tolerance for prohibited or objectionable weeds, or
both, in the field will be determined by the inspector.
Notes
N.D. Admin Code 74-03-14.1-04
Adopted by
Administrative
Rules Supplement 2022-385, July 2022, effective
7/1/2022.
General Authority: NDCC 4.1-52-10
Law Implemented: NDCC 4.1-52-10,
4.1-53-42
