What happens to seed that is produced and falls in the fall?

Les teaches that the analogy begins with planting a seed, such as a kernel of wheat. The first thing that seed does is die; it germinates. When that seed dies, new life follows. He explains that the whole system of nature and the sphere of springtime picture death, burial, and resurrection. Everything that produces seed in the fall drops that seed somewhere, but it is going to die, and when everything is right it will spring up into new life and reproduce again. Les then applies this same way in the Spirit: we have to die. God told Adam and Eve that the day they ate of the tree they would surely die, and Ezekiel later said the soul that sinneth shall surely die. The human race has no alternative but to die because we are born in sin, yet there is a loophole: we can die in the person of Christ on the cross by identification, by faith, by trust—when He died, I died; when He died, you died. Les says this is what Paul is stating.