Section 285.623.215. Foundation corn; single cross hybrids.

(1) A single cross hybrid shall consist of the first generation of a cross between 2 certified inbred lines.

(2)   A single cross crossing field shall be isolated by a distance of not less than 825 feet from other corn of like color or texture and 1,320 feet from corn of a different color or texture.

(3)   All of the following field inspection standards   shall  be complied with:

(a)   Fields shall be inspected by the certifying agency not less than 4 times during the pollinating period.

(b)   Seed parent plants that are capable of producing viable pollen shall be detasseled.

(c)    When 5.0% or more of the seed parent plants in a crossing field have apparently receptive silks, the field is ineligible for certification if shedders comprise more than 0.5% of the seed parent plants on any 1 inspection or exceed an accumulative total of more than  1.0% for  any 3 consecutive inspections.

(d)  A shedder is a seed parent plant that has more than 1 lineal inch of tassel area with anthers shedding pollen.

(e)   One or more seed parent lines growing in the same isolation and having more than 5.0% apparently receptive silks are ineligible for certification if 1 or more of the seed parent lines have more than 0.5% shedders, unless the plants in the area that have excess  receptive silks are destroyed.

(f)  ) Roguing for off-type plants shall be performed before the time of pollen discharge.

(g)   A crossing field in which more than 0.1% definitely off-type plants or more than 1.0% doubtful-type plants in  the pollen parent have shed pollen shall not be certified.

(h)    At the time of the last inspection, the seed parent in a crossing field shall not contain more than 0.1% definitely off-type plants or 1.0% of doubtful-type plants.

(4)   A seed lot of a single cross hybrid shall not have more than 0.1% definitely off- type ears or more than 0.2% ears with off-color kernels as determined by an ear inspection or winter grow out test.

History: 1994 AACS.