Abstract
A farm machinery selection and management program was developed and written in the C programming language to run on an IBM compatible personal computer. The program input information consists of a list of desired field operations with start date, acres, and hours per day for each operation. Other input includes crop yields, penalty dates for planting and harvesting, availability and cost of labor, and certain economic data. Stored data files contain machine list prices and productivity values, work-day probabilities, and equation constants for computing machine costs. For different machinery sets or a specified set of machinery, the program schedules the field operations and computes the total machinery-related costs including costs for the machines, labor, and timeliness. Using an optimization process, the lowest cost machinery set is determined and the eight lowest cost sets found during the process are presented. For any of the eight lowest cost sets, or for a specified set of machinery, the output includes a list of the machinery with prices and annual use, the work schedule, the cost for each operation, and the total machinery-related costs.
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