11


(rows 11-37).

 The input for machinery usage is much the same as the previous sec-

tions relating to products and operating inputs, with several important

exceptions:

 1) No price is entered in column thirteen.

 2) Except for machines number 1 through 12 in a machinery comple-
 ment, the entries in the monthly columns are the numbers of
 times the acre is covered by the implement in the month. For
 machines 1 through 12 the hours used per acre per month is
 entered.

 3) The line number of the machine from the machinery complement,
 such as shown in Appendix V, is the appropriate entry for item
 code, column 16, of the input form.

 4) The power unit used to pull the implement is specified in column
 15 of the input form. Any self-propelled machine, listed 1-29
 in a machinery complement, may be used to pull an implement. No
 power unit is specified for self-propelled machines.

 For the corn grain example, the field is triple disked in March with

a fourteen-foot tandem disk pulled by an 83-horsepower tractor. The

appropriate entries for this operation are as follows:

 Line No. Col. 3 Col. 15 Col. 16
 March Unit Item
 (Power Code)
 (38) Disk 3. 2. 35.

 It is also possible to specify more complex machinery operations,

 such as alternate year operations or multiple hitch set-ups, in the

 machinery usage section. To illustrate this, assume that for the corn

 grain example, instead of pulling each implement separately, the plow is

 pulled along with disk one time per acre. This modification to the

 sample budget would yield the following entries.