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PDFWAC 16-302-510

Isolation requirements for red clover seed certification.

Isolation requirements for the production of red clover seed crop are as follows:
(1) Red clover for certification must be isolated from all other red clover varieties or fields of the same variety not meeting varietal purity requirements for certification as follows:
Class Being
Fields less than five acres
Fields five acres or more
900 feet
600 feet
165 feet
165 feet
(2) Isolation between different classes (generations) of the same red clover variety is as follows:
Class Being Produced
Distance Required from Fields Planted with:
Fields less than 5 acres
5 acres
or more
Foundation or Certified
225 feet
150 feet
75 feet
45 feet
(3) In cases where an adjoining field is planted with a different variety of red clover, or red clover of a lower class, isolation may be obtained by measuring off the required strip in the certified seed field. This isolation strip may be mowed for hay or it may be harvested for uncertified seed under the following conditions:
(a) The grower must apply for certification of the entire red clover field and clearly stake off the isolation strip. The entire field must pass all certification requirements, except for isolation at time of inspection. The field report will show rejection due to lack of isolation.
(b) The grower must harvest and deliver to a department approved conditioning plant the seed from the certified portion of the field separately from the seed from the isolation strip. After the seed is weighed and lotted in the weight of the seed from the isolation strip is to be reported to the seed program. At this time the seed program records will indicate the field has passed certification.
[Statutory Authority: RCW 15.49.005, 15.49.081, 15.49.310, 15.49.370(3) and chapter 17.24 RCW. WSR 00-24-077, ยง 16-302-510, filed 12/4/00, effective 1/4/01.]
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