Sunflower Diseases are starting to pop up as the sunflower crop matures. Do you know the difference between the various head and stock diseases that affect sunflowers?

It’s important a grower properly identifies the disease, to understand the disease cycle, damage and management for future years. Here is a quick layout depicting the various diseases. To read more, visit our Sunflower Production Guide – Disease section

Check out the latest newsletter for June 17, 2016 featuring current crop staging, the battle of cutworms and the first observed sign of sunflower rust in Manitoba.

June 17 newsletter

 

Sunflower Newsletter screenshot


Click here
to read the latest sunflower newsletter for June 3, 2016 on sunflower planting progress, cutworms and production timelines.

How to stage your sunflowers for spray timing?

The minimum plant stage for most herbicides in sunflower is 2-leaf. These are the first two leaves that come out opposite of the cotyledons. The next leaves must be half as long as the previous ones to be considered 3-4 leaf. The same rule applies up to the 8-leaf stage.

*Reminder to consult your Guide to Crop Protection for further information.  

Products

Rate/ac

Crop Stage

Weed Types

Registered Tank-mixes

Assert 300SC 32 ac/jug 2 to 8 leaf Broadleaf

(Stink weed, Mustard)

None
Muster T-N-G 8 to 12g 2 to 8 leaf Broadleaf Assure II
Express SG 6 g/ac 2 to 8 leaf Broadleaf (Lambsquarters, Wild Buckwheat) Assure II
Solo ADV 40 ac/case 2 to 8 leaf Broadleaf and Grassy None
Clethodim (Centurion, Poast Ultra. Select, Etc.) 20 to 54 ac/ case All growth stages Grasses None registered
Assure II 40 to 54 ac/case No leaf stage restrictions Grasses Express, Muster T-N-G

Well it looks like spring has sprung! Fertility is top of mind as planting is in the near future, specifically regarding nitrogen. New research out of NDSU is suggesting alternative recommendations for ND farmers. However, this research has not been duplicated in Manitoba and at this point in time cannot be confirmed.

The Sunflower Nitrogen Calculator for North Dakota which incorporates the new N and P recommendations from NDSU are based on general productivity history and not a yield prediction model. N and P recommendations are based on both documented yield responses to each and economic analysis.

The NSAC is currently reviewing the calculator to ensure that it is a suitable tool for Canadian growers.  The current fertility recommendation for Manitoba sunflower growers base on MAFRD is 145 lb N/ac for a 2500 yield goal. 

*NEED GROWER COOPERATORS. NSAC is looking for grower cooperators to test the NDSU calculator in Manitoba to validate the recommendations. Growers will be asked to do +/- 30 lbs of nitrogen and replicate it 3 times.  If you are interested in participating contact Troy Turner at (204) 750-2555.*

Weeds have always and still can be a major production issue in sunflowers. This is due to the fact that sunflower plant populations are purposely very low to achieve larger seed size. This allows for ample sunlight to get to the ground during the early season. Weeds then can thrive if not taken care of, resulting in poor crop performance, yield loss, and the potential to harbor disease that can negatively affect a sunflower crop.  The good news is that sunflowers now have new herbicide options available!

With the development of herbicide tolerant varieties, there are now two herbicide options for growers. Used along side a good pre-emerge product, excellent weed control results can be achieved. Always remember to consult the label or company representative on all products before using.

Registered herbicides for sunflowers.

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CARMAN, MB, March 10, 2016 – The National Sunflower Association of Canada (NSAC) held their re-organizational meeting and elected a new executive for the 2016/17 year:

President – Mark McDonald, Virden, MB
Vice-President – Aaron Elskamp, Woodlands, MB
2nd Vice-President – Devin Toews, MacGregor, MB
Past President – Gregg Fotheringham, Reston, MB

Did you miss CropConnect?

NSAC agronomist Troy Turner, along with Anastasia Kubinec, MAFRD and Fred Parnow, NuSeed presented on 5 management practices for growers to “Make the Grade for Sunflowers”.

There are 5 management practices that sunflower growers can apply to achieve the best grade:

  • Ideal Planting Time
  • Plant Populations
  • Pest Management
  • Desiccation
  • Harvest Timing, Do Not Delay!

Click here to read the full article.

NSAC Election Results

At the February 10, 2016 board meeting, Blair Woods of Elgin, MB was re-elected and Gilbert Sabourin or St.Jean, MB were elected for the 2016-2020 NSAC board of directors.

NSAC will hold our re-organization meeting on March 10th

Click here to see the 2015 Audited Financial Statements

Canada