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Soybean Producer Survey (05/03/18)

Conclusions based on the 2017 grower survey data (360 soybean fields)

Soybean Producer Survey

Conclusions based on the 2017 grower survey data (360 soybean fields)

  1. Planting soybean before mid-May, if conditions are favorable, may provide the highest soybean yields. Delaying planting in 2017 resulted in an average reduction of 0.4 bushel per acre per day.
  2. Selecting the latest maturing soybean variety for the growing region, when planting early, may increase yields.
  3. Growing soybean after corn resulted in about 5 bushel higher yields compared to growing soybean after soybean. Rotation is important.
  4. Fungicide seed treatments resulted in higher yields in 2017.
  5. Fields with iron deficiency chlorosis (IDC) issues had 0.8 bushel per acre lower yield than fields without IDC. It is critical to pick the right varieties (tolerant to chlorosis) for fields with IDC issues.

Planting date

Averaged across the state of North Dakota in 2017, planting prior to May 15 resulted in higher yields. This trend was consistent with observations from 2014 to 2016. In those years planting the first week in May (1-6) yielded 46.2 bushel per acre, seeding the 2nd week in May (7-12) averaged 43.4 bushel per acre, and planting later than May 19 yielded less than 39.0 bushel per acre. Producers will need to consider soil and weather conditions before starting soybean planting. Normally in the northern part of the state planting soybean will start later than in the southern region. However, the trends in all regions of the state indicate a higher soybean yield potential with early planting when conditions are favorable.

Kandel.1.

Seed treatments

Averaged across 2014-2017 (Table 1), 76% of growers used seed treatments and on average had a yield of 40.7 bushels per acre. The growers who did not use seed treatments and on average had a significantly (P<0.10) lower yield of 39.2 bushels per acre.

 

Table 1. Seed treatment use and soybean yield in bushels per acre.

Kandel.2.

 

Peder Schmitz

ND Soybean Survey Coordinator

Hans Kandel

Extension Agronomist Broadleaf Crops

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