Albert Lea Seed

Farm Seed: Grasses

Organic Smooth Brome (Bromus inermis)

Smooth Brome is a great fit for long term pastures. It is a long-lived, sod-forming, perennial grass which spreads by rhizomes. It is high yielding and palatable producing leafy, vegetative growth early in the season so most of its yield comes in the first cutting each year. It is widely used in pasture, hay and erosion control mixtures because it is very winterhardy and adapted to a wide range of soil and moisture conditions. It does best on more productive soils. It is slow to establish but develops a deep root system which accounts for its drought and heat tolerance. Due to its dense sod, it may out-compete other grasses and alfalfa over time.

Agronomic Basics: Organic Smooth Brome

Descriptions:

Smooth Brome (Bromus inermis):

  • A leafy, sod-forming, perennial, cool-season grass that spreads by rhizomes making it very persistent.
  • The stems vary in height from 2 to 4 feet. The plant produces numerous basal and stem leaves that vary in length from 4 to 10 inches.
  • Smooth Brome is the most widely used of the cultivated bromegrasses and has been cultivated in the U.S. since the early 1880s.
  • The grass is highly palatable and is high in protein content and relatively low in crude-fiber content.
  • Approximately 138,000 seeds per pound
  • Considered an invasive species in the Midwest

Mountain Brome (Bromus marginatus):

  • Yields more and recovers faster than smooth brome. Non-sod forming.
  • Dries very easily making it a better companion with alfalfa than smooth brome.
  • Seed 8-15 lbs/acre in a mix or 35 lbs. straight.

Meadow Brome (Bromus biebersteinii):

  • Much faster recovery and better fall growth than smooth brome. Non-sod-forming.
  • Seed 8 lbs/acre with alfalfa or 30 lbs/acre straight.

Best Uses:

  • Brome may be used for hay, long-term pasture, silage, or stockpiling.
  • It is compatible with alfalfa or other adapted legumes.
  • Since the plant has a massive root system and is a sod former, it can be used effectively for critical area planting and waterways if the areas given adequate moisture.

Adaptation:

  • Brome is best adapted to cooler climates and is generally hardier than Organic Tall Fescue or Organic Orchardgrass.
  • It is resistant to drought and extremes in temperature but will go dormant under these conditions. Fescue is a better choice for summer production.
  • Brome is susceptible to disease in areas of high humidity.
  • Brome grows best on slightly acidic to slightly alkaline well-drained clay loam soils with high fertility but it will also grow well on lighter textured soils where adequate moisture and fertility are maintained.
  • Brome performs best in a pH range of 6.0 to 7.5.

Management considerations:

  • Stands are difficult to obtain and growth is poor on soils high in soluble salts.
  • Due to the slow germination and establishment of Brome, spring seedings are especially preferred in the northern states.

Planting Dates:

  • Early to late spring, late summer.
  • In southern MN: March 15 – May 15, August 1st - August 15th

Seeding Rate:

  • 10-20 lbs/acre alone. 3-10 lbs/acre in a mix.
  • Drill ¼ - ½ inch deep in a well-prepared seedbed. Can be drilled (best method), broadcast or bulk-spread and lightly dragged in.
  • About 14 days to emergence.

Fertility requirements:

  • Brome requires heavy early spring and fall applications of nitrogen to maintain high yields in a pure stand.
  • Mixtures with alfalfa will require less nitrogen but the alfalfa will usually need phosphorus each year to maintain vigor.

Pasture management

  • Do not graze the new seeding. Cut the first crop for hay.
  • In Bromegrass-Legume pastures, allow the legume to go to bud or early-bloom stage before turning cattle in to avoid bloat hazard, and manage thereafter for optimum regrowth of the legume.
  • Pastures should not be grazed prior to Brome attaining a minimum height of 10 inches at the beginning of the grazing season.
  • Grazing pressures should be adjusted throughout the season to avoid grazing this grass to less than a minimum height of 4 inches.
  • Allow grass to re-grow 4-5 weeks between grazing periods.

Organic Smooth Bromegrass
http://extension.missouri.edu/publications/DisplayPub.aspx?P=G4672

Organic Smooth Bromegrass
http://pubs.cas.psu.edu/freepubs/pdfs/uc090.pdf

Bromegrass
http://www.maes.umn.edu/06VarietalTrials/bromegrass.pdf