Description:

Sudangrass cover crop is known for quick re-growth ability. They are also:

  • Very large biomass producer- 4-8 DM tons/acre
  • Ideal for grazing and hay operations- easier to dry down than sorghums
  • Good prevent plant option because it’s compatible over multiple environments and soil types

Visit our Mixes page to explore premium Soil First mixes blended with different grass seed varieties. View mixes.

Non-Forage Benefits:
1 = Poor; 5 = Excellent

Compaction Alleviation: 4
Weed Suppression: 5
Biomass Production: 5
Erosion Control: 4
Disease/Pest Control: 4
Pollinator/Beneficials: 3
P & K Cycling: 3
Ease of Establishment: 4

Nitrogen Fixer/Scavenger: Scavenger

Nutritional Value:
Values Vary Greatly Depending on Maturity

Crude Protein: 9
NEL¹ Mcal/lb.: .57
ADF%²: 43
NDF%³: 67
TDN: 57
DM Tons/Acre: 2-6
Days to First Harvest: 50
Days to Next Harvest: 30

¹- Net Energy for Lactation = Energy available after subtracting digestive and metabolic losses
²- Acid Detergent Fiber = Low values mean more digestible
³- Neutral Detergent Fiber = Low values mean cows can eat more

Ranking (Good, Better, Best):
Graze: Good
Baleage: Better
Chop: Best

Planting Time:
May-July

Seeding Rate:
Mono (lbs./acre):20-45
Mix (lbs./acre): –
Forage (lbs./acre): 20-45
Aerial (lbs./acre): NR

Seeding Info:
Carbon/Nitrogen Ratio (C:N): –
Seeding Depth (in./with drill): 1/2-1
Seeds/lb.: 43,000
Bulk Density (lbs./ft.³): 40
Aerial Application Rate: Not Rated
Germination Soil Temp.: 65 F
USDA Hardiness Zone: Frost
Days to Emergence: 3-5

Nitrate Toxicity is common when fertility or manure applications are followed by a period of drought or stress. Cut plants do not lessen in their nitrate levels as they cure. If high levels are suspected, forage should be tested for a period of a few weeks until levels subside. Though often linked to summer annual grasses, increased nitrate levels can show up in most cover crops and forages.

  • Nitrates are concentrated more in the lower stalk– raising cutting height can reduce the risk
  • When a stressful drought precedes a moisture event, it is recommended to delay harvest by 1-2 weeks
  • Consider split applications of nitrogen (especially useful on summer annuals) to decrease nitrate accumulations

Prussic Acid poisoning can occur when feeding forage sorghums after periods of drought or other stress, including frost. Toxic levels dissipate usually after 2-3 weeks and will further decrease when ensiled. Prussic acid is most concentrated in new growth, so sorghum forages should not be grazed until they are at least 18 in. tall. Storing hay or silage for at least 30 days generally dissipates the concern.

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