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] for wheat and three thousand two hundred eighty feet [1000
meters] for rye 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]
for wheat and six hundred sixty feet [200 meters] for rye 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. Prior to inspection, the field must be isolated from inseparable
crops by a strip at least five feet 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] for
wheat and one thousand six hundred forty feet [500 meters] for rye 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.
2.
Specific field standards.
|
Factor
|
A-Line Foundation
|
B- and R-Lines Foundation
|
Commercial 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
74-03-14-04
Adopted by
Administrative
Rules Supplement 369, July 2018, effective
7/1/2018.
Amended by
Administrative
Rules Supplement 2020-377, July 2020, effective
7/1/2020.
General Authority: NDCC 4.1-52-10
Law Implemented: NDCC 4.1-52-10,
4.1-53-42
