Seed and Seed Cleaning

1. to remove hairy parts of seed
4. a machine with spinning metal components that to break up and liberate seeds from shells or pods and allow material to drop through screens of various sizes
5. abbr. a calculation of the amount of viable seed within a lot based on purity and germination rates
9. the protective outer covering of the seed (2 words)
12. inert plant material to be separated during seed cleaning
13. a measure of the percentage by weight of seed versus inert matter, other species, and weed seeds within a sample
15. a machine consisting of many different wooden-framed screens to clean various shapes and sizes of seed
18. process to weaken or open the seed coat to encourage germination
19. to blow air through to separate inert plant material from seed
20. to develop from a seed into a seedling; a singular verb for a sum of events that typically culminate in the emergence of the radicle from the seed coat

2. a state in which viable seeds are prevented from germinating by physiological or physical properties
3. a measure of the number of seeds that are alive and have potential to germinate
6. a tool with wire or plastic mesh in a frame to separate plant materials based on size
7. process to simulate winter conditions (i.e. cold and wet) to encourage germination
8. a one-seeded fruit found in the grass family; grain
10. the young plant within a seed
11. embryonic leaf/leaves
14. to separate seed or grain from a plant, mechanically or manually
16. nutritive tissue surrounding the embryo of the seed
17. the first part of a seedling to emerge during germination