16-302-670  <<  16-302-675 >>   16-302-680

WAC 16-302-675

Hybrid sorghum standards for seed certification.

(1) Land, isolation, and field standards for hybrid sorghum seed certification are:
 
 
 
 
Field Standards
 
Land Standards Minimum Years
(b)
Isolation
Standards
Minimum
Feet
Pollen Shedding By Seed Parent Maximum At Any One Inspection
Other Varieties And/Or Off-Type (a)
Definite
Doubtful
Class
(**)
 
Foundation
1
 
990
1:3,000
1:50,000
1:20,000
Certified
1
 
660
1:1,500
1:20,000
1:1,000
(2) Seed standards for hybrid sorghum seed certification are:
 
Off-Type Max. Seeds/lb.
Pure Seed Min. %
Inert Max. %
Other Crop Max. Seeds/lb.
Weed Max. %
Germination Min. %
Class
 
Foundation
2
98.00
2.00
2
0.10
85
Certified
10
98.00
2.00
10
0.10
85
(**)
Pollinator Lines: B = Maintainer, R = Restorer
(a) If off-type plants are found at the time of inspection, all seed heads within a radius of five feet of these plants must be removed from the field before the field is approved.
(b) Hybrid sorghum is not eligible for certification if planted on land that grew sorghum the previous year unless:
(i) The preceding sorghum crop is the same variety and is inspected and approved for the same or higher certification classification; or
(ii) The preceding sorghum crop is a variety which differs substantially in plant growth characteristics from the variety planted. However, grain type sorghum or sweet sorghum is not eligible for certification if planted on land that grew grass type sorghum the previous year.
[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, § 16-302-675, filed 12/4/00, effective 1/4/01.]
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