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Trefoil
A fine-stemmed legume with a branching taproot. Adapted to higher
elevations. Grows 12" - 30" or more in length from a branching crown;
flowers are orange-yellow in groups of 4-8 at end of stems; leaves consist
of 5 leaflets alternately arranged, two are at the base near the stem;
several seed pods attached to a single point give appearance of bird toes.
Short lived perennial that can reseed.
Viking
Norcen
Empire
Birdsfoot
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Uses: Hay or
pasture (non-bloating)
Varieties: The erect or European types have been most satisfactory.
These varieties include Viking, Granger, Cascade, and Mansfield. The Empire
variety is a decumbent pasture type.
Weight per bushel: 60lbs.
Seeds per pound: 375,000
Germinating time: 7 days
Fertilizer: Zero N--medium soil test lecels; apply 40-70lbs. P205 and
50-80lbs. K20.
pH Range: 5.8-6.5
Soil Adaptation: Does best on well drained soil, but can be grown
with impervious subsoils.
Inoculation: Essential. Does not cross-inoculate with other legumes.
Planting: March 1 - April 15 or August 1 - September 1. Should be
sown with a grass such as orchardgrass or Kentucky bluegrass. In mixtures
4-8lbs.; alone 8-10lbs.
Method of seeding: 6" - 8" rows or solid seeded. Well prepared,
compact seedbed is needed. Cover not more than 1/2" deep. Use cultipacker if
surface-seeded. Can also be no-till drilled or frost seeded on killed sod.
Poor seedling vigor.
Management: Permit seedlings to become well established before
grazing or harvesting. Clip weeds. Use rotational or moderate continuous
grazing for pastures.
Harvesting (hay): When in bloom. Avoid clipping close if extremely
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Viking
Upright variety for hay and pasture; yields well.
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Norcen
Good yielding. Suitable for hay or pasture. Intermediate in height between
Viking and Empire in average date of first flowering. Winter hardy.
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Empire
A long-lived, low growing pasture type. Germinates and emerges somewhat
slowly in spring. Flowers 5-10 days later than the upright types. Not
well suited for hay or silage. Satisfactory for disturbed areas such as soil
banks.
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Birdsfoot
A fine-stemmed legume with a branching taproot. Adapted to higher
elevations. Grows 12" - 30" or more in length from a branching crown;
flowers are orange-yellow in groups of 4-8 at end of stems; leaves consist
of 5 leaflets alternately arranged, two are at the base near the stem;
several seed pods attached to a single point give appearance of bird toes.
Short lived perennial that can reseed.
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