Arrowhead
1. Arrowhead is a 58 clone synthetic variety. One half of the parent plants were selected from the variety MagnaGraze out of forage yield plots near Clinton, WI. Plants were selected for deepset crowns, resistance to bacterial wilt, Fusarium wilt, crown health and herbage growth. The other half of the parent plants were selected out of saturated soils near Marshfield, WI. Plants were selected for resistance to bacterial wilt, Fusarium wilt, Phytophthora root rot, Aphanomyces root rot (Race l or 2) and leaf disease. This source material trace back to Evolution and Defiant. The percent of germplasm sources are: Ladak (28), M. varia (l2), Turkistan (35), Flemish (25).
2. Arrowhead is adapted in the North Central Region of the United States and intended for use in the Northern half of the United States. The state where it has been tested is Wisconsin.
3. Arrowhead is a dormant, fall dormancy 2 variety. Flower color in the Syn. 2 generation is 85% purple, 15% variegated, trace amounts of cream, white and yellow.
4. Arrowhead has high resistance to bacterial wilt, Fusarium wilt, Phytophthora root rot; resistance to anthracnose (Race 1), Aphanomyces root rot (Race 1), Verticillium wilt, pea aphid and moderate resistance to northern root-knot nematode (M. halpa) and stem nematode. It has not been tested for blue alfalfa aphid and spotted alfalfa aphid.
5. Breeder seed was produced from bulking seed of parent plants planted in field isolation to produce Syn. 1 seed near Sloughhouse, CA in 1994. Foundation seed (Syn.2) was produced from Breeder seed and Certified seed (Syn. 3) from Foundation seed. One generation each of Breeder, Foundation and Certified seed classes are recognized. A maximum of three harvest years each is permitted on stands producing Breeder and Foundation seed with five years for Certified seed. Dairyland Research International will maintain sufficient Breeder seed for the projected life of the variety.
6. Certified Seed was available fall of 1998.
7. Application for the Plant Variety Protection is undecided.
8. Information in the NAVRB application can be forwarded to the PVP office.
9. Variety name: Arrowhead
Experimental designations: DS9852
Date NA and MLVRB first accepted this variety November 25, 1998
Date previous amendments were accepted
Date this amendment was submitted November 28, 2000