260 THE ESSENTIALS OF AGRICULTURE 



6. How many more cattle will be required to eat the silage that should 

 be fed each day from a silo 20 feet in diameter than from one 10 feet in 

 diameter ? 



7. What are some of the most important reasons for securing an even 

 distribution of the silage as the silo is being filled ? 



8. When should corn be cut for the silo ? 



9. When should sweet sorghum be cut for silage? 



10. How much silage may be obtained from a fifty-bushel corn crop ? 



11. How does the pit silo compare with the aboveground silo in con- 

 struction, use, and value ? 



12. How much silage should be fed daily to a yearling calf? to cows in 

 full flow of milk ? to idle horses ? to fattening lambs ? 



13. Explain how silage keeps ? 



14. Why will silage made from legumes not keep so well as that made 

 from corn or sorghum ? 



15. Why will silage made from hollow-stemmed plants not keep well? 



EXERCISES 



1. Compute the capacity of a silo required to feed a herd consist- 

 ing of 10 dairy cows in milk, 5 dry cows, 6 yearling heifers, and 

 7 calves, and determine the largest diameter of silo that would be 

 practicable for such a herd. 



2. Compute the size of silo required for a herd of 20 beef cows, 

 1 8 two-year-old steers, 30 yearling heifers and steers, 25 calves, 30 

 breeding ewes, and 10 idle work horses. What is the largest diame- 

 ter that could be used ? What diameter and what height would you 

 recommend ? Would it be wiser to use one or two silos for this num- 

 ber of stock ? How many acres of corn should be planted to supply 

 the amount of silage required for this herd? How many acres of 

 sorghum ? How many acres of kafir ? What would it cost to fill the 

 silo with corn silage for this herd ? 



3. What is the capacity of a silo 30 feet in height and 18 feet in 

 diameter ? How many cows would such a silo feed for one hundred 

 and eighty days ? 



4. What are the types of silos in use in your county? What is the 

 significance of the fact that almost all these silos are of recent con- 

 struction ? What do silo owners think regarding the value of silos ? 



