Viking is an early, high -yielding, winter -hardy variety. It has good 

 seedling vigor, starts early in the spring, and recovers rapidly after 

 cutting. It can be grown anywhere in the trefoil area and is particu- 

 larly adapted to the Northern States. It blooms about the same time 

 as red clover. 



Empire is a very winter-hardy, low-growing trefoil, better suited to 

 pasture production than the other varieties. It blooms 10 to Z0 days 

 after alfalfa, red clover, and the European -type trefoils --Viking, 

 Cascade, and Granger. It is lower yielding than Viking but persists 

 well under heavy grazing once it is established. It is adapted to the 

 same area as Viking. 



Mansfield is a new variety that shows promise in Vermont. Addi- 

 tional testing is necessary to determine its advantages and areas of 

 adaptation. 



Cascade and Granger have good seedling vigor, are easy to estab- 

 lish, provide abundant hay, and recover rapidly after cutting. De- 

 veloped for Washington and Oregon, both varieties have shown 

 promise in Ohio, Indiana, Illinois, and Missouri. 



Douglas is a new variety, similar to Cascade and Granger, that is 

 grown in Oregon. 



Tana is adapted to Montana. Seed production is just getting underway. 



Narrowleafed Birdsfoot Trefoil 



Narrowleafed trefoil is slightly less productive and lower-growing than 

 broadleafed trefoil, and is tolerant of saline soils. It is grown in the irri- 

 gated sections of California, Oregon, Idaho, and Nevada, where it is used 

 mainly as a pasture legume. It will withstand heavy grazing. 



TREFOIL, BIG 



Big trefoil occurs in Washington and Oregon. The plant favors fairly 

 acid peat or muck soils and has little or no drought tolerance. It also shows 

 promise on poorly-drained, marshy soils found in the flatwood sections of 

 those States east of the Mississippi and south of Virginia and Kentucky. It 

 is used for hay and pasture. 



VETCH 



Vetches are vining or weak-stemmed annuals which require cool tem- 

 peratures during some part of the year for best development. Certain 

 varieties can be grown in all regions of the United States where adequate 

 moisture is available. Regardless of location the vetches prefer deep loam 

 soils, but some varieties require less fertile soils than others. All are 

 tolerant of acidity. They are grown for hay, pasture, or soil improvement. 

 Their season of production depends upon their geographical location: In the 

 South they make their best growth in winter and early spring, while in the 

 North they start growth early in the spring and mature late in the summer 

 or fall. Hairy, common, purple, Hungarian, and woollypod vetches are the 

 kinds most commonly grown in the United States. 



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