238 DAIRY FARMING 



212. The Value of Manure Depends on the Crops on 

 which it is Applied. At the Ohio Experiment Station, 8 

 tons of manure was applied on wheat as compared with the 

 same application on potatoes. The manure gave increased 

 crops worth $3.45 per ton when applied on potatoes, but gave 

 only $2.72 per ton when applied on the wheat crop. If one 

 farmed 75 acres of this land with this three-year rotation 

 and had 200 tons of manure to use each year, he would 

 make $3066 more in twenty-one years if he applied it on the 

 potatoes rather than on the wheat. 



With corn, wheat, and oats, each grown continuously on the 

 same land at the Ohio Experiment Station, corn paid the best 

 prices for manure, wheat next, and oats least. 



Such experiments indicate the great importance of applying 

 the manure on the right crop in the rotation. They also 

 indicate the great advantage of combining dairying with the 

 production of such intensive crops as potatoes. 



QUESTIONS AND PROBLEMS 



1. Make a list of all the farmers you know, with the number of 

 cows that they keep, and state whether or not they have a silo. 

 Lists by different members of the class can be combined to make a 

 cow and silo census. What proportion of the farmers who have 10 

 cows or Jess have a silo ? What proportion of those who have 10 to 

 20 cows have a silo ? What proportion of those who have over 20 ? 



2. Make a list of all the different kinds of silos of the region. Of 

 as many as possible, find the cost (including labor by the farmer) 

 and the cost for each ton of capacity. 



3. If any farmers have cut part of a field for silage and have 

 husked part of the same field, find the yield of silage and of grain. 

 How many bushels of corn in a ton of silage ? If the use of the silo 

 and machinery and extra work amount to $1.00 per ton, what would 

 a ton of the silage cost at the present price of corn ? 



4. Does any one in the region follow a soiling system ? 



6. Are roots raised for stock food by any farmers in this region ? 

 6. What are the best legumes for the dairy farm in this region ? 





