Across the state, soybean planting is still on-hold due to continued wet weather. A few weeks ago, I wrote an article on recommendations for June-planted soybeans: https://agcrops.osu.edu/newsletter/corn-newsletter/2019-12/recommendations-late-planted-soybeans You can also find recommendations for late-planted soybeans in the Ohio Agronomy Guide available to download as a pdf here: https://stepupsoy.osu.edu/soybean-production/ohio-agronomy-guide-15th-edition (click on the picture of the guide to download).
I think June-planted soybeans still have a great deal of yield potential; however, it will depend on how the rest of the year turns out. (Will there be water limitations during pod-setting and seed fill? Will we have an early frost?)
In Clark County at the Western Agricultural Research Station (WARS), we have observed a 0.6 bu/acre/day reduction in soybean yield (see Figure 1). Soybeans planted on July 2, 2013 yielded close to 60 bu/acre and soybeans planted on July 1, 2014, yielded close to 50 bu/acre. Interestingly, in Wood County at the Northwest Agricultural Research Station (NWARS) in 2014, yield was just over 50 bu/acre regardless of planting date, which spanned from May 8 to June 18. I’ve summarized some of our other late-planted soybean yield data in the table below.
Planting date |
County |
Average yield (bu/acre) |
June 1, 2011 (performance trial) |
Preble County |
64-71 |
June 1, 2016 (relative maturity trial) |
Clark County |
60 |
June 3, 2011 (performance trial) |
Mercer County |
57-66 |
June 4, 2011 (performance trial) |
Delaware County |
43-56 |
June 4, 2017 (performance trial) |
Sandusky County |
57-58 |
June 5, 2011 (performance trial) |
Erie County |
59-65 |
June 6, 2017 (relative maturity trial) |
Wood County |
50 |
June 6, 2011 (performance trial) |
Henry County |
54-56 |
June 7, 2011 (performance trial) |
Fayette County |
58-72 |
June 7, 2011 (performance trial) |
Mercer County |
53-55 |
June 8, 2017 (relative maturity trial) |
Clark County |
60-65 |
June 9, 2016 (relative maturity trial) |
Wayne County |
68 |
June 9, 2017 (relative maturity trial) |
Wayne County |
55 |
June 13, 2016 (relative maturity trial) |
Wood County |
58-61 |
June 26, 2018 (double crop trial) |
Clark County |
48 |
June 29, 2018 (double crop trial) |
Wayne County |
41 |
June 29, 2017 (double crop trial) |
Clark County |
39-47 |
July 11, 2016 (double crop trial) |
Clark County |
43 |