554 SEED AND ITSJnEEDS 



8. Why must the soil be aerated for good plant growth? 



9. Give two ways in which oxygen can be secured for the seed. 



10. What three temperatures are recognized in the germination of seed? 



1 1. What are the five processes' of germination? 



12. Name the internal conditions affecting germination. 



13. What is meant by maturity of a seed? 



14. Discuss two ways a seed may be unsound. 



15. Is germinative energy important to the seed? 



16. What are hard seeds? How is the defect remedied? 



17. What is seed testing and of what value is it to the grower? 



18. Describe four kinds of seed testers. 



19. What type of soil is preferred for the seed-bed? 



20. What determines the depth to which seed should be planted? 



21. Discuss the compacting of the soil about the seed. 



22. What determines the proper time to plant seeds? 



23. Why is it necessary to thin plants? 



24. What is a seed-bed, and why is it important to have it well prepared? 



25. What two methods are used in sowing of seed? 



26. Why does shade assist the seedling to start growth? 



27. Discuss the watering of seedlings. 



28. Discuss transplanting of seedlings. 



