66 PACKING THE SOIL ABOUT PLANTED SEEDS 



2. Under what conditions should a roller be used after 

 planting seed? 



3. When a lawn is started, the seeds are scattered on the 

 surface of the ground and the soil is rolled several times. 

 How does rolling help the germination of grass seed? 



4. If a board is left lying flat on a new-seeded lawn, the 

 seeds in dry weather will germinate faster under it than in 

 other places. Why? 



