8 



farm to the office record sheet while the survey is in progress, so 

 that additional data may be secured from any farm for which the 

 record is incomplete or inaccurate. 



Before commencing the tabulation of survey data the records 

 should be rechecked by a competent person. 



PRELIMINARY CALCULATIONS. 



Before beginning the tabulation of the data from a farm man- 

 agement survey it is necessary to make calculations to obtain all 

 the figures required in the tabulations. These calculations should 

 be made, and the results recorded on each farm record sheet; or 

 better, on a factor sheet prepared especially for the purpose. The 

 calculations usually required for each farm are as follows: 



1. Value of real estate per acre. 



2. Depreciation, interest, and repairs total for buildings, 

 fences, and machinery, per farm and per crop acre. 



3. Per cent of capital invested in each of the following factors 

 of production: Land, dwelling, other buildings, implements and 

 machinery, live stock, feed and supplies, and cash to run the farm. 



4. Working capital, in dollars, and in per cent of total capital. 

 (The working capital consists of the investment in implements 

 and machinery, live stock, feed and supplies, and cash to run the 

 farm.) 



5. Working capital per acre of crops. (If the survey is in a 

 region where pasture land is of prime importance and where the 

 percentage of pasture land on the different farms varies widely, 

 the pasture area should be reduced to its equivalent crop area and 

 added to the crop area, making the crop area equivalent of the farm, 

 and this calculation should be based on crop area equivalent. See 

 method of determining crop area equivalent under calculation 

 No. 55b.) 



6. Pasture area percentage. That is, the percentage the pasture 

 area is of crop and pasture area combined. 



7. Percentage of total crop area devoted to each crop. 



8. Crop index. This is determined for an individual farm as 

 follows: Divide the quantity of each field crop produced on the 

 farm by the average yield of that crop for all the farms in the sur- 



