NAC587.323. Requirements for isolation.  


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  •      1. Except as otherwise provided in subsection 2, the following requirements for isolation must be met if at least two different strains of the same species of grass are in bloom at the same time:

    Type of Reproduction

          Border to

       Be Removed

                  Minimum Isolation

      Foundation

      Registered

       Certified

    Cross-pollinated................................

                   0 feet

          900 feet

          300 feet

        165 feet

                   9 feet

          600 feet

          225 feet

        100 feet

                 15 feet

          450 feet

            50 feet

          75 feet

    Strains at least 80 percent apomictic and highly self-fertile species......

                   0 feet

                   9 feet

            60 feet

            30 feet

            30 feet

            15 feet

          15 feet

          15 feet

         2. If different classes of the same variety, which must also meet certification requirements, are being grown on the same or adjacent fields, the requirement for isolation may be reduced to 25 percent of that shown in the table in subsection 1. The minimum isolation for all seed classes of tetraploids is at least 15 feet from diploids of the same species.

         3. Border removal is allowed only in fields of at least 5 acres. A border must not be removed until pollination of the crop to be certified is completed. The distance is the minimum isolation required for each class of seed after border removal.

         4. For the purposes of this section, varieties within species with both cross-pollinated and apomictic type of reproduction are considered highly apomictic for minimum isolation unless otherwise specified for that variety.

     (Added to NAC by Dep’t of Agriculture, eff. 12-3-90; A by R174-99, 3-13-2000)