It can be used for hay, haylage, green-chop, and pasture. Larger stems make drying for hay more difficult than for sudangrasses. Establishment Sorghum can be established either by conventional or reduced tillage methods. Soil pH should be between 6 and 7.5 with 6.5 being considered optimum. Sudangrass has low levels of this compound and rarely kills animals.
Sorghum has the highest levels and sorghum-sudangrasses are intermediate.
There is also considerable varietal difference in prussic acid content for all types of sorghums. This compound is highest in young plants. Therefore the recommendation is not to graze or cut for green chop until the plant is 18 to 20 inches tall. It is important to watch for young regrowth in pastures. After a drought, new shoots may appear and the cattle will switch from the taller forage to the new tender shoots.