Dairy farm incomes are affected by many things. Farm management studies have identified general factors such as size, rates of production, labor efficiency, capital efficiency, and cost control as being related to farm incomes. In addition there are many practices which affect or determine these general management factors. An example is dairy management practices which affect rates of production and cost control. These traditionally have not been analyzed in dairy farm business studies. Computre technology has added new dimensions to farm management studies. Computer facilities have made it possible to expand the kind and amount of information available to dairy farmers from their dairy herd improvement (DHI) production records. Likewise, farm business management summaries have been expanded since computer programs have been developed to summarize and analyze the data. These changes have brought new manangement tools to dairymen. In 1974 a pilot project was initiated to merge for analysis purposes the DHI dairy management practie information with the farm management business summary information. The project proved to be workablel and the procedure has been repeated each year since. This publication reports the results from the 1978 data and includees some comparisons with the four earlier years.