M.S. Exit Seminar

Mar 18, 2015 (All day)

Matthew Hankinson
M.S. Exit Seminar

Dr. Laura Lindsey, advisor
March 18, 2015 at 1:00 in Kottman 244 (Columbus) and videolink to 121 Fisher (Wooster)

Title: Planting Date and Starter Fertilizer Effect on Soybean Growth and Yield

Abstract: Soybean [Glycine max (L.) Merr] is usually planted in Ohio from mid-April through July, and the application of starter fertilizer is uncommon. However, starter fertilizer may be beneficial at earlier planting dates when soils are cool or wet and nutrient availability is limited. The objectives of this study were to (i) evaluate the effect of planting date on soybean canopy development and yield; (ii) evaluate the effect of starter fertilizer on soybean biomass, nodulation, and yield; and (iii) evaluate the net return of each planting date and starter fertilizer. In 2013 and 2014, four planting dates from early May through July and five starter fertilizers were used at the Western Agricultural Research Station (WARS). Three planting dates were evaluated at the Northwest Agricultural Research Station (NWARS) in 2014. At the WARS location, yield decreased 0.57 and 0.60 bu ac-1 d-1 that planting was delayed after the first planting in 2013 and 2014, respectively. Overall, starter fertilizer application had a minimal effect on yield and did not provide a consistent positive economic impact. Based on three site-years of the study, planting in early May without starter fertilizer provides the greatest chance to consistently maximize soybean yield and economic impact.