The purposes of the study were to: (1) determine some major characteristics of Marion County soybean producers and their farms; (2) more accurately determine which recommended production practices soybean producers were using in 1968 and 1969; (3) study the relation between use of recommended production practices and yield levels; and (4) identify some of the more important factors influencing adoption of recommended soybean production practices. Thirty-eight soybean producers were interviewed to gather data, and growers were categorized in above- and below-average yield levels for comparison purposes. Findings, conclusions, and recommendations are given. (Author/DB)