If a seed tag stated percent germination at 80% and the purity at 80%, what is the pure live-seed ratio?

To determine the pure live seed (PLS) ratio, you multiply the percent germination by the percent purity and then divide by 100. In this case, if the germination is 80% and the purity is also 80%, the calculation would be as follows:

PLS = (Germination Percentage) × (Purity Percentage) / 100

PLS = (80% × 80%) / 100

PLS = 6400 / 100

PLS = 64%

This calculated value represents the percentage of viable seeds in the seed lot, which is critical for evaluating the effectiveness of the seed for planting. The PLS ratio gives growers insight into the actual number of seeds that will germinate and grow, ensuring they are making informed decisions about their planting material.