8 LABORATORY MANUAL IN FIELD CROPS 



PRACTICUM NO. 6 

 Object. To Calculate the Cost of Producing Corn. 



Method. This laboratory exercise is intended to acquaint 

 the student with the factors to be taken into consider- 

 ation in calculating the cost of producing a crop, and to get 

 estimates on the cost of production for the locality. (This 

 exercise may be worked out for the most important crop of the 

 community.) 



Include : Interest on the investment at 5%. 



Cost of seed at 3 cents per pound. 



Water right and maintenance charges in the case of irriga- 

 tion. 



Taxes. 



Labor of preparing the soil. 



Cost of implements, counting depreciation at 10 % per 

 annum. 



Value of horses, depreciation 10 % per annum. 



When manures are applied, charge only that part used in 

 the production of the crop, viz. : if six tons are applied every 

 other year, only half of the cost of the fertilizer should be borne 

 by one year's crop. 



STUDIES 



1. What profit would be realized from the average state 

 yield at one cent per pound for the corn ? 



2. Where in the cost account could the farmer most readily 

 reduce the expense of production ? 



3. If the expenditure of one ton of manure per acre 

 at $1.50 per ton, labor included, produced an increase of 

 one-third in the crop, what would be the result on the 

 profits? 



