Plant Re-Growth?

Is your field still looking green after the combine has rolled through?

With the lack of moisture experienced this past year, some combines have fired up earlier then usual, as the lifecycle of plants may have been cut short. A combination of an earlier harvest with late season rains has also led to more plants, both crop and weeds regrowing after they have been swathed and combined.

Have you ever thought about how many nutrients are used when it comes to plant regrowth?

Any actively growing plants in a field are busy taking up soil water and nutrients as they build leaf and root tissue. Although small, young juvenile plants have a high concentration of certain nutrients like Nitrogen and Potassium and can assimilate a large amount in a short period of time. In fact, many crops like Canola and Wheat take up nearly 90% of their total Nitrogen within the first 6-8 weeks of growth.

While it may be tempting to assume that these nutrients will be available for next years crops there are many factors that affect mineralization rates including plant material growth stage, Carbon to Nitrogen ratio, incorporation, temperature, moisture, and many more. The other consideration is the uniformity of regrowth, is it on every acre or patchy? How much N should I apply across the field?

As with many decisions a grower must make, the 2022 fertility plan is full of uncertainty and tough decisions. The widespread reduction in yields caused by prolonged drought, hail, and unrelenting heat this year leave enough question marks as to what to apply in the spring, with the rapid and widespread regrowth only adding to this complication. While there is no crystal ball to know what to apply, soil testing coupled with the experience and knowledge of your Synergy AG team can help you with your decisions for the upcoming year. For further information please contact the Synergy AG rep in your area!

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