Some people with chest pain have normal or minimal narrowing of heart arteries; in these patients, vasospasm is a more likely cause for the pain, sometimes in the context of Prinzmetal's angina and syndrome X.
You are here. Pure Live Seed. Pure live seed (PLS) is a measure used by the seed industry to describe the percentage of a quantity of seed that will germinate. PLS is obtained by multiplying the purity percentage by the percentage of total viable seed, then dividing by 100.
Scatter the seeds over the soil in spring, after temperatures reach between 65 and 70 degrees Fahrenheit, at a rate of 24 pure live seeds per square foot or 4 pounds of pure live seed per acre. If you are planting the seeds over a large area, use a broadcaster to help you spread them more evenly.