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Perennial Peanut
Scientific Name: Arachis glabrata
Cultivars:Florigraze, Arbrook. Older cultivars (Arb and Arblick) are not recommended because of slower establishment and productivity.
Growth Habit:1/2 to 1 1/2 feet tall, sod forming growth. Four leaflets per leaf. Bright yellow flowers.
Life Cycle:Perennial
Origin:South America
Production Season:March to October
Nutritive Value:Perennial peanut is a high quality forage legume. Plant parts analysis regardless of maturity has shown leaf and stem digestibilities exceeding 60% and 50%. Crude protein ranges from 13 to 18% depending on maturity and leaf/stem ratio. Usually medium to high crude protein; medium to high digestibility.
Use:Mostly for hay, also for grazing, pasture
Herbarium Image:For an herbarium image click this link, and this link.

Adaptation
Soil:Sandy loam.
Adapted to well drained sites.
It will not persist in soils that are under water saturation for more than 2 weeks.
pH:5.8 to 7.0. If pH is too high it will develop iron chlorosis
Rainfall:Above 30 inches during the growing season; possibly less (25 inches) if the water holding capacity of the soil is greater.
Temperature:Cold tolerant up to north-west Florida (<15°F)

Management
Planting Date:December to March
Planting Depth:1-2 inches
Seeding Rate:
  • 80 to 100 bu/acre (assuming 1 bu= 1.25 cubic ft); if planting by weight 900 to 1200 lb/acre (1 bu= 11 to 15 lb, highly variable depending on how wet the sprigs are when dug)
  • 1 acre of perennial peanut nursery allows to plant 20 acres more or less. If planting with sod more acres of nursery are required.
  • Seed Cost:$3/bu; custom sprigged is approx. $275/acre + delivery costs ($2.50 per loaded mile)
    Fertilization:For fertilization info click this link
    Production:
  • per cutting: 2000-3000 lb/acre
  • season total: 7000-10000 lb/acre

  • Notes
  • Inoculation of the rhizomes with the N fixing bacteria (Rhizobium) is not necessary because it is passed with the planting material.
  • Need to allow for rhizome development before a killing frost (to avoid reduced yield in spring).
  • Arbrook has more erect growth, and larger rhizomes that provide good spring growth.
  • For large acreage, a small section of Arbrook in a Florigraze field is recommended to obtain the additional early spring growth.
  • Similar to alfalfa in quality.


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