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Testing Results from across North America…observed and reported.

1. Seeding deeper than recommended by experienced agronomists….does produce better results…with the Deere 1890……and always with No-till
    corn planters.

2.      Seed deeper and locate the seed in the No-till Buffered Zone. The Buffered Zone has a more uniform distribution of moisture….allowing even

3.      The Buffered Zone will germinate more evenly in air dry soil when the moisture comes in Fall or when the seed is dusted in.
 The goal is to have the entire wheat crop emerge at the same time without stress of air dry soil drying out germinated seed.

4.      When Roundup is pre-plant applied just before seeding the crop seems to produce better stands when the seed is placed in the Buffered Zone. If
         Round-up is applied after the seeding and prior to emergence the shallow seedings and the delicate coleoptiles are damaged.  

5.      The university recommendation for seeding depth is general and for all drills….Even though the university recommended depth may be length of the
         wheat berry coleoptiles  before the leaf slips out….typically 1.25 inches…some varieties at 1.5 inches.

      No Crusting, Strong Emergence…”All soldiers march off to war together”,  Mader & Company.

6.      The results with the Deere 1890 indicate the slot does not seal over or crust because of the No-till soil structure and residue ….
the soil surface remains ideal for Coleoptiles emergence…the results of the opener performance in years of testing indicates excellent stands at 2.25
         inch average
         seeding depth for winter wheat or spring wheat.

7.      The observation of seeding depth is for Winter Wheat and Spring Wheat. The results of years of testing indicates many producers are seeding too
         shallow with these two crops.

8.      Do not harrow or pack after seeding wheat with the 1890.  Leave the opener’s tillage effect fully exposed…valley’s and ridges must remain to assure
         the emergence is even an uniform.

9.      UNLCE, Paul Jasa reports that Corn emergence….in no-till the stand establishment results are better when the seed of hybrid corn is placed at 2.5 to 3
        inches…”the Buffered Zone” allows more uniform stands since each plant spaced about 8 inches apart comes up exactly at the same time….where
        shallower seedings have non-uniform emergence and therefore “the Weed Effect”.  This is another reason to review Bunch or Hill planting of wheat.

    “Seeding Depth is Most Important.” Eric Odberg.  

10.     Another major discovery in corn planting that applies to wheat seeding…..seeding depth is more important than in the row spacing or the
      singulation CV.
 A no-till planting with a weighted down
International Cyclo planter…planting at 2.5 inches depth with weight added of 700 pounds
         per row and low opener bounce will outperform the newest planter from the factory operating a 1.5 inch depth in No-till.

11.     The goal is to establish the stand at the same time….no stragglers…no late emergence….no seed rotting in a dry zone… seed  resting in
          residue, commonly referred to as “seed to soil contact”.  Thus the power of the Cross Slot opener is further understood. It is almost impossible to  get
          a bad stand establishment from a Cross Slot opener equipped drill
, mainly because the operator can not change the emergence technique.

12.     Plot the solution…if it is dry conditions or moist conditions seed well below the surface residue.    Find “the Buffered Zone” for the seed to
      germinate and emerge all together at the same time.

      "Do it No-till and Do it with the Opener", Paul Jasa.

13.     Row Cleaners are not necessary with the 1890….not required….if adequate down pressure is generated….and the wheat seed is placed at 2.25
         inches in “the Buffered Zone”.

14.     The 1890 opener does not leave the ground smooth….and this is the opener’s secret….the emergence of the spike coleoptiles is actually in a
         depression of about ½ to ¾ of an inch….and thus the seed is resting at an ideal depth with no crust.

15.     When seeding in the Buffered Zone….High quality Foundation, Registered or Certified Seed must be used. Seed treatments are always used.  High
         test weight seed that has been generated on highly productive and rotated soils will produce a vigor very equivalent to hybrid vigor due to close links
         to the parents. Never use bin run seed. Buy your high quality seed from seed processor that follows the guidelines of Washington State Crop
         Improvement Association…the model for the all in every state.

      "Adjust the Seed Rate". Brian Downing.

16.     Buffered Seeding with Exactrix Wing Injection….Seed rate needs to be adjusted lower since the stand will be much better and could be too
         concentrated. Depending on the metered delivery of course…Ag Pro meters that offer individual seed row meters are always set much lower than
         typical airseeder/tower delivery. About 10% lower on the seed rate is a good place to start if your machine is a 1990 or Ag-Pro meter.  Time proven
         on the Great Plains… a Bushel and Peck is the pioneer statement…. when seeding conditions are ideal…higher seed rates are often a waste of
         money and may actually detract from yield by producing more straw and less grain.

What is the Buffered Zone?

The Buffered Zone is about 2 to 3 inches in depth below the soil surface in No-till.  The best place to find the Buffered Zone is in No-till soils.  

The organic ooze of life is most concentrated right at the soil surface to about 1.5 inch depth.   This aerobic zone of high organic activity is loaded with atmospheric oxygen and thus more acidic. Oxidation means acidic conditions.  Thus fungus colonies are highly active in the Aerobic Zone of about 1.5 inches.

The uniformly distributed residue load at the surface will also help to stabilize the soil temperature when night time temperatures drop. The Buffered Zone has a more stable soil temperature.

The Buffered Zone is not ideal for weed seed germination. Weed seeds respond to infrared light and will germinate primarily in the shallow aerobic zone of the surface residue to 2 inches in depth(wild oats excluded).  

Soil active chemicals are located at the soil surface in concentrated form to help control weeds…deeper seeding at 2.5 inch are located in a less concentrated area of soil active chemicals.

The Buffered Zone has more crop available nutrients and moisture when nutrients are banded with Exactrix Wing Injection.

Root colonization with Deere Exactrix Wing Injection
What is Exactrix Wing Injection?

The nutrient bands of TAPPS are located about .75 inches to the side of each 1890 seed row. This seeding and banding technique allows the fine hair roots of the first seminal roots to access the nutrients….no seminal root cap burning is the result….and nutrient uptake at emergence results in plant vigor.

The fine hair roots find the nutrient bands that are highly crop available balanced nutrients ……thus the first leaf is a deep dark green….and fine hair roots penetrate and colonize within the TAPPS band.  Normally fertilizer rates are reduced in half due to the geometry and the TAPPS formulation efficiency.

Row Cleaners are not required.

Try to avoid the thought of dragging around another 8,000 pounds of rolling residue removers.  

There is virtually no place to stack the residue anyway plus slope angles can really complicate the residue removing process. 

Keep it simple and keep the residue exactly where is was relocated by the combine.  

The 1890 opener allows the operator to determine how much residue needs to moved with the opener.

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Spokane, WA 99212
(509) 535.9925  fax(509) 535.9989

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