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TODAYS EDGE

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					                                              FA C T S O N

                                              TODAY’S EDGE*
                                              Pre-emergent herbicide for pulse and oilseed crops.



EDGE HERBICIDE IS UNIQUE IN SEVERAL WAYS:

      Unlike post-emergent herbicides, Edge is placed in the soil, in the zone of weed seed
     germination where it disrupts the growth of weed shoots and roots. Weeds are removed
     early and never get a chance to compete with the crop.

      Edge can be applied to the soil well before seeding. In fact, Edge may be applied the
     previous fall, which spreads out the spring weed control workload.

      Edge contains a unique active ingredient (ethalfluralin) that is more potent and moves
     off the carrier (“gasses off”) more efficiently than other pre-emergent herbicides.


HOW EDGE WORKS                                                           RESISTANCE MANAGEMENT
After application, the active ingredient in                              Edge is a Group 3 herbicide. Including Group 3 in the herbicide
Edge moves off the carrier and attaches to soil                          rotation helps manage the cycle of resistance build-up. In
particles. A very small amount also occupies the                         particular, using Edge makes for a sound rotation from Group 1
soil air pockets in the form of a gas. The rate of                       wild oat herbicides and Group 2 herbicides.
movement and activity in the soil increases
with heat and moisture.                                                  Spring-applied Edge Granular rates

In many cases, Edge may provide all the weed                                 Soil zones               Light soils                 Medium to heavy soils

control needed. If weed pressure is heavy,                                   Dark Brown          17 kg/ha (15 lb/ac)                17 kg/ha (15 lb/ac)
post-emergent herbicides may also be needed.                                 2% – 4% O.M.             3.6 ac/bag                         3.6 ac/bag
However, Edge will have already removed early
                                                                             Black               17 kg/ha (15 lb/ac)                22 kg/ha (20 lb/ac)
weed competition, making post-emergent
                                                                             4% – 6% O.M.             3.6 ac/bag                        2.75 ac/bag
application timing easier.
                                                                             Deep Black          22 kg/ha (20 lb/ac)         22 to 282 kg/ha (20 to 25 lb/ac)
Edge has a period of extended activity in the
                                                                             6% – 15% O.M.            2.75 ac/bag                    2.75 or 2.2 ac/bag
soil. This means that Edge keeps on controlling
weeds that might flush in spring and early                               2
                                                                          For improved results on medium to heavy textured soils with 6% to 15% O.M. and high weed
                                                                         populations, use higher spring application rate.
summer.

                                                                         Fall-applied Edge Granular rates
REGISTERED CROPS1
Edge can be used for weed control in:                                        Soil zones                Light soils                Medium to heavy soils

      Alfalfa establishment                     Field peas                   Dark Brown           22 kg/ha (20 lb/ac)               22 kg/ha (20 lb/ac)
                                                                             2% – 4% O.M.             2.75 ac/bag                       2.75 ac/bag
      Canola                                    Lentils
                                               (fall application only)
      Caraway                                                                Black                22 kg/ha (20 lb/ac)               28 kg/ha (25 lb/ac)
                                                Safflower                    4% – 6% O.M.             2.75 ac/bag                        2.2 ac/bag
      Coriander
                                                Soybeans                     Deep Black           28 kg/ha (25 lb/ac)               28 kg/ha (25 lb/ac)
      Dill
                                                Sunflower                    6% – 15% O.M.             2.2 ac/bag                        2.2 ac/bag
      Dry beans (white, kidney)
                                                Yellow mustard
      Fababeans                                                          Edge comes in 25 kg bags or 544 kg mini-bulk bags.
1
    For a complete crop listing, see label.
                                                                                           Suppressed:
         CONVENTIONAL TILLAGE AND EDGE                                                     Wild oats (8.2), volunteer wheat (7.9), cleavers (6.4),
                                                                                           lady’s-thumb (7.7), hemp-nettle, Russian thistle, nightshade
                                                                                           (American, black), volunteer barley (6.3).
In conventional tillage, incorporate Edge in the top three to
                                                                                           BASE TREATMENT FOR HERBICIDE-TOLERANT
four inches of the soil. Weed seeds are distributed
                                                                                           CANOLA
throughout the tillage layer, so incorporation places the
active ingredient in the zone of weed seed germination. Use                                Pre-emergent Edge can be used in ALL canola varieties,
recommended incorporation procedures as outlined on the                                    including HTC systems, as a base treatment to simplify
Edge label. Edge can be applied in either spring or fall.                                  spray timings, reduce or eliminate early weed competition
                                                                                           and provide season-long control of flushing weeds.
                                                                                           Roundup Ready®: Edge base treatment simplifies
          PUTTING THE PRODUCT WHERE WEEDS                                                  spray timing decisions by controlling wild oats and wild
                     GERMINATE                                                             buckwheat early. Observed yield increase5 of 10%.
                                                                                           CLEARFIELD®: Edge base treatment plugs the gap in
                                                                                           lamb’s-quarters control and reduces the stress of deciding
                                                                                 1
                                                                                           when to apply the one allowable pass of Odyssey®.
                                                                                 2         Observed yield increase5 of 12.3%.

                                                                                 3         LibertyLink®: Edge improves grassy weed control and
                                                                                           permits more flexibility in timing of Liberty® application.
                                                                                 4
                                                                                           Observed yield increase5 of 19.4%.
                                                                                 5         5
                                                                                            Source: small plot trials conducted by AgQuest, Agriculture and Agri-Food Canada,
                                                                                           and Alberta Agriculture, Food and Rural Development.
                                                                                 6


    Edge Granular           Weed Seed                                     Depth Chart


WEEDS CONTROLLED IN CONVENTIONAL
TILLAGE3
The numbers in brackets after the weed represent the
average level of weed control expected with Edge in pre-
plant incorporated (PPI) applications. Numbers (where
available) are based on available data from the Expert
Committee on Weeds (Western Section) Research reports, as
quoted in AAFRD 2002 Crop Protection Guide.
(9.0 = complete weed kill; 7.0 or greater is considered commercially acceptable.)
3
    For a complete listing of weed activity, see label.


Controlled:
Chickweed (7.3), green foxtail4 (8.5), lamb’s-quarters (8.6),
yellow foxtail4, wild buckwheat (8.3), redroot pigweed
(8.2), kochia (7.0), prostrate pigweed, barnyard grass (8.2),
purslane, crab grass, fall panicum, cow cockle, giant foxtail,
witch grass, corn spurry, Johnsongrass (seedling), blueweed.
4
 Edge Granular will not control trifluralin-tolerant types. See specific recommendations
in the GENERAL USE PRECAUTIONS section of the label.




This fact sheet is a basic introduction only to the guidelines for use of Edge. Before use, and for complete information,
read and follow Edge label.
T      E         C     H         N   I    C   A     L             I   N      F      O        R       M         A        T   I   O   N

                                                                      MANAGEMENT PRACTICES
           DIRECT SEEDING AND EDGE                                    Research only – not recommended/not registered.
                                                                      6




                                                                      Based on current research and farm trials, six management
                                                                      practices have been shown as critical for successful use of
While experience with Edge in direct seeding is extensive,
                                                                      Edge in direct seeding.
this method of application is not registered. The following is
a basic introduction to the current research into using Edge.         1. Residue must be spread evenly. Clumps of chaff have
                                                                          reduced effectiveness of this Edge application concept.
A new concept in applying granular pre-emergent
herbicides involves spreading the granules, then using                2. Best results have been observed when fields being
harrows to improve contact with the soil surface, thus                    surface-treated with Edge have been direct seeded for at
reducing tillage. Direct seeding fits one of the key                      least two years prior to application.
application principles of pre-emergent herbicide chemistry:           3. Granules must be spread evenly using a properly
put the active ingredient where the weed seeds germinate.                 calibrated applicator. Research shows a light harrow
In direct seeding, that’s at or very near the soil surface. In            operation moves granules to the soil surface layer and
fields under zero tillage for two years or more, germinating              traps them there.
weed seeds become concentrated within approximately
                                                                      4. Research has illustrated that in fields receiving a surface
one inch of the soil surface.
                                                                          application of Edge, the use of a pre-seed burndown
                                                                          (Vantage* Plus MAX, or other glyphosate) must occur
     PUTTING THE PRODUCT WHERE WEEDS                                      to control weed growth before the Edge has fully
                GERMINATE                                                 activated. It is important that the pre-seed burndown
                                                                          occur a minimum of 10 days after a spring surface
                                                             ⁄4
                                                             1            application of Edge.

                                                             ⁄2
                                                             1        5. After fall application of Edge, ensure the pre-seed
                                                                          burndown controls the first flush of weeds. Edge will not
                                                             ⁄4
                                                             3
                                                                          be activated in time to control the first flush of weeds.
                                                             1
                                                                      6. Observations show that existing label rates are
                                                           11⁄4           appropriate for surface treatment in fall or spring.
                                                           11⁄2       ROTATIONAL CROP INFORMATION
                                                                          Edge will not harm rotational crops when used as directed.
 Edge Granular       Weed Seed                         Depth Chart        As a precaution, very sensitive crops such as oats,
                                                                          sugar beets or small-seeded grasses such as timothy,
WEED CONTROL IN SURFACE-TREATMENT TRIALS
                                                                          canaryseed and creeping red fescue should not be
Controlled: Green foxtail, lamb’s-quarters, wild buckwheat.               grown on land treated with Edge the previous year.
Suppressed: Wild oats, volunteer wheat, cleavers, chickweed.              Do not seed wheat as a rotational crop on land
Note: Not all weeds controlled in conventional tillage are                treated for two consecutive years at the oilseed/special
controlled with Edge in direct seeding.                                   crop/barley rate of Edge, Treflan* or Advance*.

RESEARCH FINDINGS                                                         Over-application caused by overlapping, improper

1. Surface-treating with Edge offers growers in direct                    calibration or non-uniform application may reduce stands

    seeding systems access to another herbicide group                     of sensitive crops grown in rotation.

    (Group 3), that helps manage weed resistance.                         Drought conditions in the years of treatment may result

2. With pre-emergent herbicides in the rotation, growers                  in higher than normal levels of Edge in the soil at the end

    are less dependent on suitable weather conditions and                 of the growing season. To reduce the possibility of injury

    available time to get all their spring work done in a                 to rotational crops, seed shallow into a warm, moist

    short season.                                                         seedbed using recommended agronomic practices that
                                                                          will promote rapid germination and emergence of the
3. In pulse crops, Group 3 herbicides are one of the few
                                                                          rotational crops.
  cost-effective chemical weed control tools available.
               FREQUENTLY ASKED QUESTIONS
               Q: Why is Dow AgroSciences conducting research                      Q: Will rain or snow affect Edge?
                       into using Edge in direct seeding?                          A: No, Edge is not water soluble, so moisture will not
               A: This is a result of growers reducing their level of soil            move Edge down into the soil. In order to provide
                       disturbance through direct seeding. Reducing soil              effective weed control, Edge must be placed in the
                       disturbance by using seeding equipment with knives             same soil layer where weed seeds germinate.
                       or coulters and staying in this system for at least two     Q: What are the effects of heavy rainfall?
                       years moves weed seeds back to the soil surface. This
                                                                                   A: In heavy rainfall conditions, a reduction in control can
                       zone of weed seed germination has driven surface-
                                                                                      only occur where water remains on the soil surface
                       treatment research for Edge. Harrowing helps to
                                                                                      for a week or more (ponding) or from the physical
                       ensure good contact of the granules with the soil. If
                                                                                      erosion of the soil and herbicide due to water runoff.
                       you are using heavy harrows, set the tine angle fairly
                                                                                      In long-term direct seeded fields, both effects are less
                       flat to minimize the amount of soil disturbance.
                                                                                      likely to occur due to improved soil conditions.
               Q: What rate of Edge do I apply?
                                                                                   Q: What are the effects of very dry conditions?
               A: The recommended rate of Edge is determined by
                                                                                   A: If soil conditions are very dry, the pre-emergent
                       your field soil type, and does not change to reflect
                                                                                      herbicide may be less active, but there will also be
                       tillage practices, crop grown, weed densities or
                                                                                      diminished germination of weeds. The net effect is
                       species. Refer to the spring or fall application rates in
                                                                                      still an acceptable level of control.
                       this brochure or on the product label.
               Q: Does heavy crop residue affect performance?
               A: Where there is a thick layer of crop residue (e.g.,
                       chaff windrows) Edge performance may be reduced.
                       In order to provide weed control, Edge granules
                       must be placed near the germinating weed seeds.
                       Where there are thick layers or clumps of residue,
                       this may interfere with placement near germinating
                       weed seeds and increase the risk of weed escapes.
               Q: How does cold soil temperature affect
                       performance?
               A: If the soil temperature is adequate to allow weed seed
                       germination, Edge will provide control.




          Accomplish more on the same acres with Edge. Call the Solutions Center at 1.800.667.3852
          or visit www.dowagro.ca.

*Trademark of Dow AgroSciences LLC.
®
 All other products are registered trademarks of their respective companies.
0905-4060-024

				
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