Soybean Growth and Development

C.O.R.N. Newsletter Articles

  1. Author(s): Laura Lindsey

    Currently, most soybean fields in Ohio are at the R3 growth stage, meaning there is a pod at least 3/16 inch long (but less than 3/4 inch long) at one of the four uppermost nodes on the main stem with a fully developed leaf. Some late planted fields may still be at the flowering growth stage while some early planted fields may be entering the R4 growth stage (pod 3/4 inch long at one of the four uppermost nodes on the main stem with a fully developed leaf).

    Issue: 2022-23
  2. Author(s): Laura Lindsey

    Currently, most soybean fields in Ohio are at the flowering growth stage (R1-R2). (Some late-planted or re-planted soybean may still be at a vegetative stage.) Even as soybean plants begin to flower, they may only have 3-5 trifoliolates due to late planting and wet weather followed by dry conditions. However, even if plants have flowers and only a few trifoliolates, the plant will continue to add leaf area up to the R5 growth stage, which comes 4-6 weeks later.

    Issue: 2022-21
  3. Author(s): Laura Lindsey

    According to the USDA National Agricultural Statistics Service, 36% of soybean acreage in Ohio was planted by May 22. As soybean planting continues into June, consider row spacing, seeding rate, and relative maturity adjustments.

    Issue: 2022-16
  4. Author(s): Laura Lindsey

    Cool, wet weather in April and early May delayed soybean planting progress; however, with some warmer and drier days, soybean planting was 18% complete by the second week of May (Table 1). Soybeans that were planted the end of April or first week of May are likely at the VC growth stage or will be at the VC growth stage soon (Figure 1).

    Table 1. Percent soybean acres planted in Ohio by week for the past five years (USDA NASS).

    Issue: 2022-15
  5. The Western Agricultural Research Station Agronomy Field Day will be held July 17th. The station is mostly planted but everything went in on the edge – as you saw it on your farm too. Hear our researchers thoughts and recommendations on how to manage this interesting season.

    A couple of items we will walk through are:

    Issue: 2019:20
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