2018 Knox County Soybean Seeding Rate Trials – Plot #1 July 5 2018 A big Thank You to David and Emily Mitchem for their help in one of our research plots this year Soybean plant population trials – 15 in rows 100,000 seeds/ac. 120,000 seeds/ac. 140,000 seeds/ac. 160,000 seeds/ac. 3 replications each.