Soybean Production

Soybean production Information

One of the most important features of a soybean is the fact it is a legume.  What makes this so important?  It saves tremendous amounts of money on nitrogen IF nodulation develops sufficiently.  The next question is, how can I tell if I have good nodulation and if the nodules are working?  What about the number of nodules and when they develop?  These questions are very important because it directly effects end yield, nitrogen carryover for credits to next season, and input costs.  Here are some tips.

  1. The bacteria which cause the nodules to form function most efficiently in nuetral pH.  As the pH drops away from 7.0 or moves above it the impact on the bacteria, the nodulation development, and nitrogen fixation itself is impacted so it is critical to keep that pH in the mid six to low seven range.  When it moves outside that range nodulation will be reduced and efficacy of individual nodules will be reduced and to reach premium yields supplemental nitrogen will be necessary.
  2. Plant the seed in moist soil and if possible prevent the seed from drying down during germination as this will impact nodule development.
  3. Test the soil 6 to 8 months before planting and adjust pH with lime or sulfur (if economically feasible).
  4. Conduct a complete test with the above step and apply appropriate minerals needed and pay specific attention to calcium saturation as legumes are high calcium users.
  5. Scout the nodules as the plant develops.
  6. Check the activity of the nodules by checking the interior color.
  7. Preventatively treat for diseases with fungicides, specifically for rust and leaf spot.
  8. Tissue test during pre and early bloom stage to determine macro and micro nutrient plant needs and make adjustments with foliar feeds to the plant.


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