Northern Prairie Wildlife Research Center
| Seed quality** | |||||||
| Species | Optimum lb/acre PLS* | Percent of full seeding | Amount of PLS (lb/acre) | Purity | Germination | Factors*** | Bulk seed (lb/acre) |
| Big bluestem | 10.6 | 0.50 | 5.3**** | 70 | 60 | 2.4 | 12.7 |
| Indiangrass | 10.0 | 0.30 | 3.0 | 75 | 60 | 2.2 | 6.6 |
| Switchgrass | 4.5 | 0.20 | 0.9 | 95 | 80 | 1.3 | 1.2 |
| Totals | 9.2 | 20.5 | |||||
* Based on recommended full seeding rate of 40 PLS per aquare foot. ** Percent purity and germination are shown as minimum standards for good quality seed. Use actual purity and germination of seed lot to calculate bulk pounds. *** Conversion factor from Table 3 (Conversion factors to determine pounds of bulk seed needed for 1 pound of pure live seed). **** Optimum lb/acre PLS x Percent of full seeding = Amount of PLS.