2006 Spencer Award goes to Rosmann family ; Field peas, pigs make good combination ; Director column: How do partnerships relate to our mission? ; Kirschenmann column: Agriculture needs a new ethic ; Does five-a-day pay for Iowans? ; Finding the right fit, support for ag entrepreneurs ; Four-year rotations offer promise at bottom line ; Projects involve students for education, outreach ; New report summarizes work on 21 projects