Byrons Seeds A542B Sorghum Sudan

$1.70 per lb
Total (50 lbs): $85.00

Byron’s A542B is an aphid-tolerant sorghum-sudan with brachytic dwarf features.

Weight: 50 lbs Seed Rate: 40 to 50 lbs/acre Stock Status: In Stock Zones: 2, 3, 4, 5, 6 Brand:

Product Description


Bryon’s A542B is an sorghum-sudan or C4 grass. It is an aphid-tolerate sorghum/sudan. Byron’s A542B is an warm-season grass so it process sunlight into sugars (photosynthesis) differently than do cool-season (C3) grasses. Byron’s A542B sorghum-sudan:

  • It’s brachytic dwarf features sturdy, leafy plants for quality multiple cuts.
  • BMR 6
  • A542B will resist aphids!
  • Must be planted after soil temperatures reach 60 degrees and rising
  • Grow best at 77 degrees and higher
  • Will produce a ton of silage with half the rain or irrigation needed by corn silage

After germination, sorghum-sudans thrive in hot, dry weather. They die soon after a freeze.

These forages produce quick tons of highly digestible (high energy) silage or pasture; they are an excellent source of pasture for the hottest months.

BMR (brown mid-rib) is a natural trait (not GMO) that produces lower levels of lignin in these plants. BMR Gene 6 is the highest BMR level, meaning that it contains the lowest level of lignin of any sorghum or sudan. This trait transforms sorghum products from heifer feed to the highest-quality dairy cow feed. All the sorghum-sudans in the Byron Seeds. lineup are BMR 6.


Byron’s A542B can be harvested for baleage or haylage about 45 days after planting. Grazing is usually initiated a week to 10 days earlier. If residual gets to short it will prevent regrowth.

Fertilizer needs are 1-1 1/4 units of nitrogen per growing day, i.e., 45-50 units for the first cut and 30-35 units for each subsequent cut. Potassium, phosphorous and sulfur are also needed on most farms. All fertilizer needs are the equivalent of the needs for 100-bushel corn. Manure can be used for the original application of fertilizer; however, commercial nitrogen is the best source after a cutting. Nitrogen needs for grazed sorghum-sudan must be reduced proportionally so that cows can be brought in to graze earlier with danger of nitrate poisoning. Sorghum-sudan should not be grazed for 7-10 days after a killing frost as it takes about seven days for the prussic acid produced by the frost to dissipate.


Sorghum-sudan usually emerges in about 10 days and then can grow 3-6 inches per day. A conventional or no-till drill is used for the seeding. and planting depth should be 1-1 1/2 inches.

Planting after a small grain crop (rye or triticale, for example) requires dealing with the allelopathic effects from the dying grain plants. This can be accomplished with either minimum tillage or heavy application of liquid manure. Because no herbicides are available for sorghum-sudan, weed management activities must precede planting .

Byrons Seeds A542B Sorghum Sudan Tech Sheet

Tags: , ,

Additional information

Weight 50 lbs