Rhodes Research and Demonstration Farm
Authors: John Lundvall (Iowa State University) , Keith Whigham , Mark E. Westgate (Iowa State University) , Dale E. Farnham (Iowa State University)
Today’s high-yielding soybean varieties respond favorably to early planting. Multi-year results from statewide university research farms suggest that mid-April to early May planting dates produce top yields in most comparisons. Research farm and on-farm strip trials also suggest that elite varieties yield similarly over a wide range of seeding rates and resulting harvest populations. Based on these results, producers are advised to plant soybeans as soon as spring field conditions allow, with a seeding rate of 150,000 to 175,000 seeds per acre.
Keywords: Agronomy
How to Cite: Lundvall, J. , Whigham, K. , Westgate, M. E. & Farnham, D. E. (2001) “Planting Date and Seed Treatment Effects on Soybean Yield”, Iowa State University Research and Demonstration Farms Progress Reports. 2000(1).