Derek's Notes


This week’s blog is brought to you by ~ Dwight Willoughby, P. Ag, CCSC



Seed Customer Reward

  • $1 / acre on Acapela fungicide with matching seed acres ($30/jug)
  • $0.50 / acre Early Booking Reward* on Acapela fungicide with matching seed acres ($15/jug)
  • $2 / acre on Salute with matching canola acres

For full program details, contact your DOW AgroSciences Rep, or give one of us a call at Derek Erb Seeds!








New addition to Derek Erb Seeds!

~ Today’s blog is brought to you by Derek Erb

Today I realized that we are starting into our 10th year in business as Derek Erb Seeds, Independent sales representatives for DuPont Pioneer. I began thinking back to when it was just Erin and me, running our seed business from my truck and our kitchen table with the goal of providing growers in our area with premium seed, services, and agronomy. 

We’ve been blessed by the friends and neighbors like you who have entrusted us with being able to help your farm operations succeed and grow, and over the years you have helped us do the same. Four years ago, we were lucky to bring on Dwight because of this very reason. 

Dwight has done and continues to do an amazing job helping us achieve that level of commitment to our growers.  And now we find ourselves lucky once again in bringing on a new team member who shares our same values and commitment goals.  Derek, Dwight and Erin are pleased to announce the addition of Richard Dureault to Derek Erb Seeds team. 

Richard Dureault

Richard currently farms in the Fannystelle area with his brother and Dad where they also offer custom planting and grain drying services.  Richard, who completed is Ag Diploma in 2011 and achieved his Certified Crop Advisor (CCA) designation, was appointed to the board of directors for the Manitoba Corn Growers Association in 2016.  

With the addition of Richard, we are also pleased to announce a second soybean bulk treating facility in Fannystelle, operated by Richard and his brother Jeremie on their yard, which will offer Pioneer Hi-Bred varieties specifically suited to our area for their strong agronomic traits.

More information to come, but in the meantime, to all our valued growers out there, we wish you a safe and successful harvest. 

Scouting for Aphids in Soybeans

Hit the Bullseye with 46H75 Canola


This weeks blog is brought to you by ~ Dwight Willoughby, P.Ag, CCSC

In our area canola growers will be loading up their sprayers with fungicides to protect their canola from Sclerotina.  Every year is different for timing, I recall the early infection  last year caught some spraying late.  Recent rains and a strong canopy are setting up environmental conditions to bring disease.  There are a number of very good fungicides.  The newest one;

· Combines two leading sclerotinia active ingredients, Lance and Proline

· Convenient liquid premix 70 acres per case

· Multiple mode-of-action

· Apply 20 to 50% bloom stage

· Strong disease management in a wide range of crops, including canola, peas, and soybeans

Note: A 2nd application can be made 7 to 14 days after 1st application if disease persists, or weather conditions favor disease

Sortan™ IS on Corn

Sortan IS Field Results Looking Impressive

 New Sortan IS is another versatile tool that can be applied from pre-emergence or spike to the V3 stage, which will help growers keep their corn weed free during the critical weed-free period.


  • The critical weed free period in corn is from emergence to the V4 (6 leaf) stage.


  • Removing weeds during this period is key to minimizing yield loss due to weed competition in corn.


Our corn growers fields are approaching V3 leaf stage, so in the next coming days the window is still open to apply Sortan IS. Below are some pictures of recently sprayed weeds in corn.


Sortan control in Domain, MB



Criteria for selecting soybean varieties

This weeks blog is brought to you by Dwight Willoughby, CCSC, P.Ag

Yield potential

  1. Maturity
  2. Pest resistance

Yield Potential

  • Most soybean varieties have genetic yield potentials well over 100 bu/A
  • The best measure of variety performance is a multi-location average and consistently high performance.
    • When a set of varieties is tested for yield over a range of environments, their rank order commonly changes, which indicates that some varieties are better adapted to a specific environment than others.
    • Sometimes it is best to select varieties with characteristics that will help them perform well in the cultural system and environment to be used rather than on yield alone.
    • For example, if the field has a history of phytophthora, then select resistant or highly tolerant varieties to address that problem.


Yield reflects a variety’s ability to grow under a set of field conditions, having noted that, maturity is nearly as important criterion in selecting a variety.  If a variety is too early or too late at a location, it will be limited in potential performance.

Generally, each 10-day delay of planting in May delays maturity 3 to 5 days in the fall. 

Maturity windows should be used to select varieties that mature at different times to allow for timely harvest in the fall.  As acres of soybeans increase it is our observation farmers are trending to blend a 60/40 split of full season to mid season maturity.

The earliest and latest varieties within a 00 group may differ by as much as two weeks in maturity.

Pioneer’s P006T46 and P005T13 fit this mid season balance of yield and timely harvest.

Maturity is noted as when 95% of the pods have turned brown.  This is not harvest maturity, but is the time when seeds are physiologically mature.  The benefit of a mid season variety vs. a full season this past year allowed harvest to start as much as 5 to 7 days sooner.

Branching versus single main stem varieties

  • Soybean varieties range in growth habits which can be benefit to farms that seed narrow to wide rows.
  • The range is from highly branching types to thin-line types which produce a single, main stem.
  • Row width and plant population may alter the growth habit of soybeans enough to somewhat change the degree of branching.
  • Branching may be beneficial under lodging conditions of if hail is a risk.

Pioneer’s Ranking

Full season varieties

Branchy Variety – P008T70R

Single Stem Variety – P008T22R2

Mid Season Varieties

Single Stem – P006T46R / P005T13R



2016 Nitrate Testing


~This weeks blog is brought to you by Dwight Willoughby, P.Ag, CCSC~

Corn Stalk Nitrate Testing

More agronomists are using the “cornstalk nitrate test” late in the season to evaluate their “N” management. This tissue testing procedure was developed at Iowa State University to help evaluate nitrogen management practices in corn as the crop matures.

The research shows that when corn has not had enough nitrogen, the nitrate value in the lower portion of the cornstalk will be low. If too much nitrogen was applied, the nitrate level in the lower stalk will test high.

This test may be of particular interest to growers who deal with manure or those wishing to evaluate their nitrogen fertility program.


Corn Stalk Nitrate Test Interpretations / Ranges and indexes used to interpret shown below

Low: (Less than 250 ppm) Likely that nitrogen was deficient and limited yield

Marginal: (250 – 700 ppm) Possible that nitrogen deficiency limited yield

Optimal: (700 – 2000 ppm) Yield was not limited by nitrogen

Excess: (> 2000 ppm) Nitrogen supply was excessive


2016 Samples Results

Corn stalks were collected midway through harvest in a random pattern and shipped to Agvise North Dakota.  Results were interesting, a couple fields were manure, others conventional programs and a couple top dressed.  Plans are to continue this service for interested customers

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