1. 53H92 is an 18 clone synthetic cultivar. Parent clones were selected phenotypically for resistance to
potato leafhopper and one or more of the following: anthracnose race 1, Phytophthora root rot,
Aphanomycyes root rot (races 1 and 2), bacterial wilt, Fusarium wilt, Verticillium wilt, and spotted
alfalfa aphid. Parent clones were also selected phenotypically for spring vigor, field appearance, and
2. 53H92 area of probable adaptation is the North Central, East Central and Moderately Winterhardy
Intermountain regions of the United States. 53H92 is intended for use in the North Central, East
Central, Great Plains, and Canada. 53H92 has been tested for yield in Iowa, Illinois, and Wisconsin.
3. 53H92 is a dormant cultivar with fall dormancy similar to FD-3 check. Flower color in the Syn 2
generation is 83% purple, 15% variegated, 1% yellow, and 1% cream with traces of white found.
4. 53H92 is highly resistant to potato leafhopper, anthracnose (Race 1), bacterial wilt, Fusarium wilt,
Phytophthora root rot, Aphanomyces root rot (Race 1), and pea aphid; resistant to Verticillium wilt,
spotted alfalfa aphid and Aphanomyces root rot (Race 2); low resistance to Northern root-knot
nematode. 53H92 has not been tested for blue alfalfa aphid resistance or stem nematode resistance.
5. Breeder seed (Syn 1) was produced in the greenhouse at Arlington, WI during the winter of 2002-03.
Seed classes will be breeder (Syn 1), foundation (Syn 2), and certified (Syn 2 or 3). Limitations of age
of stand will be one, three and five years, respectively, for breeder, foundation and certified seed.
Pioneer Hi-Bred International will maintain the breeder seed for the life of the cultivar.
6. Seed will be marketed in the spring of 2007.
7. Application for Plant Variety Protection may be made and the certification option will not be
8. As a means of added varietal protection, information included with the Application for Review of
Alfalfa Varieties for Certification may be provided to the PVP office.
9. Variety name: 53H92 Date submitted: November 30, 2005 Experimental designation: 03W16CZ2, W03CZ92