Are You Considering Early Planted Early Maturing Soybean Production System?
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It has been well documented that the early planted (before mid-May) early maturing (<MG5) soybean production system can provide big returns, but not without the challenges. Among those, is the occurrence of green stem, harvest dates of soybean that may cause issues with delivery at local elevators and intensified seed quality issues, and management issues such as insects and diseases that occur earlier on the calendar than with traditional planting dates. If you are thinking about the production system, then it may be good to watch the following video on the Pasquotank CES YouTube Channel, “Early Planted Early Maturing SoybeanProduction System”. If you have any questions about this, please contact me.
Data-Driven Recommendations for NC Soybean Planting Date
Written by Rachel Vann, Extension Soybean Specialist
(selected parts taken from the article)
The NC State Soybean Extension program has been investigating the best soybean planting date in applied research trials since 2019. We have now conducted research in 15 environments across the state capturing a range of production environments and climatic variability to drive planting date recommendations. Below we will discuss general planting date trends that have been consistent across the dataset.
- Optimum Planting Period:
If you look at the yield data generated across environments in North Carolina, the May 1 planting date maximized yield (Figure 1). However, yield response to planting date was flat from about April 20-May 20, which would be our newly defined optimum planting period across the state (Figure 1). It is evident that the trends for soybean yield response to planting date are largely the same across NC regions, however there is some geographical variation in how soybean yield responds to earlier planting dates that are worth discussion (Figure 2).
- Planting before mid-April:
In the NC Tidewater region, the yield penalty of planting before mid-April is less pronounced than it is with planting before mid-April in other NC regions, which means that based on this data growers can plant in the first two weeks of April in the Tidewater region without large yield penalty, especially when earlier maturing varieties are used.
- Planting past mid-May:
Our data consistently shows yield declines when planting date is delayed past the third week of May (Figure 1).