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Calibre BMR BMR Forage Sorghum

Calibre BMR

Sorghum x Sudan grass hybrid

Dairy or beef operations looking for hay or silage options

Early to mid-maturing BMR forage sorghum

  • 12 gene BMR
  • Highly digestible forage
  • Excellent yield potential
  • Reduced lignin from BMR trait
  • Increased livestock weight gain from better digestibility
  • High quality dry matter
Seed Agronomy Table
Maturity Medium
Life Span 9 months
Leaf Type Medium
Seeding Rate - Dryland (kg/ha) 4-8
Seeding Rate - High Rainfall/Irrigation (kg/ha) 15-20
Hard Seed Level 1 = Least Hard 10 = Most Hard • Burr Burial Strength 1 = Very Weak 10 = Very Strong
Establishment Guarantee

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  • Easy to establish
  • Highly productive
  • Good regrowth potential
  • Can be grown in dryland and irrigated situations
  • Can be used for grazing, hay and/or silage
  • More digestible than most other sorghum hybrids on the market


  • Requires high fertility soils
  • Requires good soil water or irrigation for maximum production
  • Requires appropriate grazing management to obtain maximum potential
  • Prussic acid poisoning though the potential is low in normal seasons
  • Varietal selection must be made carefully, depending on the final use e.g. for grazing, hay production, pit silage or round bale silage

Plant Description
  • Vigorously-growing, erect, annuals with branched tillers reaching 2 to 3 metres in height.

  • Erect to 2 to 3 metres.

  • 2.5 - 4 centimetres wide.

  • Large pyramidal panicles with secondary and tertiary branches.

  • Oval to round; size varies with cultivar between 30,000 to 75,000 seeds per kilogram.

  • Grazing, hay: Suitable for repeated, heavy grazing with excellent recovery between grazing. Suited to hay making because it tillers heavily and has finer stems than other sorghums. Lower prussic acid levels than other forage sorghums.

Pasture Type and Use

Various species and their hybrids are grown as forage for livestock production or for hay or silage conservation. Coarse-stemmed varieties are not suitable for round bale silage production. The various types of hybrids have different agronomic features and uses.

Sorghum Hybrid

Limited recovery from grazing. High forage yield combined with high grain content. Developed specifically for the silage industry.


Grown on stored subsoil water. Requires 500 to 800 millimetres rainfall or irrigation. Poor tolerance of flooding.


Performs best on heavy clay soils because of their high water holding capacity. When sown on lighter soils productivity will be reduced unless adequately fertilised and good seasonal rainfall occurs.


Sow when the soil temperature is above 16°C

  • It is not recommended to sow with other grasses because of its quick growth and competitive nature.

  • Lablab and cowpeas, though difficult to manage owing to different maturity times of the forage sorghum used and of the companion crops.

  • When soil temperatures reaches 16°C.

  • Should be grown on fertile soils and so would need additional nitrogen on soils of lower fertility. N can be applied where adequate soil moisture is available.

  • Produces large quantities of forage and extract significant quantities of nutrients. Application of fertiliser will depend on usage. Where forage is harvested for hay or silage, fertiliser budgets should be done based on soil test and nutrient extraction, and an application of fertiliser, particularly N and K should be made to maintain feed quality and productivity

  • Tolerant of heavy grazing with coarse stems remaining unless grazed early. Commence grazing when plants have reached 1 to 1.5 metres in height. Slashing after grazing will promote even regrowth. Should not be grazed below 15 centimetres if good regrowth is expected. Can expect 4 or more grazings under ideal conditions.

  • Low.

  • None of significance

  • None of significance

  • Atrazine may be used as a pre-emergence herbicide for grass and broadleaf weed control with care with some hybrids (see label recommendations) but not with sudan grass.

  • 2 to 8 kilograms per hectare under dryland conditions, 10 to 20 kilograms per hectare under irrigation, Sowing/planting rates in mixtures. 2 to 4 kilograms per hectare under dryland conditions in favourable environments.

  • 3 to 6 kilograms per hectare under dryland conditions.

  • 2 to 8 kilograms per hectare under dryland conditions, 10 to 20 kilograms per hectare under irrigation, Sowing/planting rates in mixtures. 2 to 4 kilograms per hectare under dryland conditions in favourable environments.

Animal Production
  • Nutritive value depends greatly on soil fertility or the amount of fertiliser applied, and on grazing management where best results are achieved with a grazing height of 1 to 1.2 m. At this height, crude protein levels could be as high as 18 per cent with energy levels of 8.8 to 9.5 megajoules per kilogram dry matter.

  • Highly palatable and digestible prior to flowering.

  • Generally, live weight gains vary between 0.5 to 1 kilogram per head per day depending on plant height and leafiness.

  • Low level prussic acid risk, especially in young stressed regrowth during a dry spell. Having supplement blocks containing sulphur available will reduce the risk of prussic acid poisoning. Nitrate poisoning can occur when grown on fertile soils containing high levels of nitrogen and when plants are stressed by dry conditions or frost.

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