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Zidua SC

Group 15

Residual control of key annual grasses and broadleaf weeds.

  • Group 15 chemistry delivers control of tough weeds, including resistant redroot pigweed and green and yellow foxtail
  • Residual activity controls germinating weed seedlings before or soon after crop emergence
  • Wide window of application from early pre-plant to early post-emergence and post-harvest

Labels & SDS



Applicable On

applicable on - field corn

Field Corn

applicable on - field peas

Field Peas

applicable on - soybeans


applicable on - lentils


applicable on - potatoes


Labels & SDS

Additional Resources

Voraxor Complete Decision Tree

Voraxor Complete Decision Tree


Zidua SC and Voraxor Infographic

Benefits of Zidua SC

  • The residual activity of this Group 15 active provides consistent control of grass and broadleaf weeds, with flexible application timing
  • Requires rainfall to go into solution to then be taken up by the roots and shoots of germinating weeds before or shortly after emergence

Product Info & Application Guide

Weed Management

Weed class

Weeds controlled/suppressed

Broadleafs – prior to emergence


Common chickweed1

Eastern black nightshade1


Lamb’s quarters1

Palmer amaranth

Redroot pigweed1,2



Wild buckwheat1

Grasses – prior to emergence

Annual bluegrass3

Barnyard grass2

Crabgrass (large)2

Downey brome1

Foxtail (giant2, green1,2, yellow1,2)

Japanese brome1

Ryegrass (Italian)2

Wild oats1


1 Early-season residual suppression only.
2 Controlled at 101 to 200 ml/ac (250 to 493 ml/ha).
3 Provides control when applied as a post-harvest treatment prior to weed emergence.

Application Tips

Restricted entry interval – 12 hours.

  • Minimum seed depth is 2.5 cm for chickpeas, corn, field peas and lentils, and 4 cm for soybeans.
  • A minimum of 2 inches of soil covering the vegetative portion of potato plants following drag-off or hilling is required.
  • Zidua SC must be applied and activated by moisture prior to weed emergence. When adequate moisture is not received after Zidua SC application, weed control may be improved by irrigation (except flood irrigation).
  • Do not use on peat or muck soils with 7% or more organic matter content.
  • Do not apply more than 1 application of Zidua SC per season.



  • Do not feed or graze treated hay or forage to livestock.

When to Apply

Application or crop



pre-seed, pre-emergence

Field corn

pre-seed3, pre-emergence, early post-emergence up to 4 leaf

Faba beans, field peas

pre-seed, pre-emergence

Herbicide-tolerant soybeans4

pre-seed3, pre-emergence, early post-emergence up to 3rd trifoliate


pre-seed, pre-emergence, fall prior to seeding


pre-seed3, pre-emergence


pre-emergence (after planting or following drag-off or hilling)


after harvest


3 Up to 30 days before seeding.
4 Talk to your grain buyer before applying to conventional or IP soybeans.

How Much to Apply

One case of Zidua® SC herbicide will treat 40 to 165 acres.  


Crop Rate by soil texture for residual control   Recommended

Residual control

  Coarse Medium-fine Fine  
Organic matter ≤ 3% 3% ‹ Organic matter ‹ 7%

Field corn (pre-plant, pre-emerge, early post-emerge) or herbicide-tolerant soybeans (pre-plant, pre-emerge)

101 ml/ac
(250 ml/ha)
134 ml/ac
(332 ml/ha)
169 ml/ac
(417 ml/ha)
200 ml/ac
(493 ml/ha)
40 to 80

Post-harvest application

49 to 97 ml/ac (120 to 240 ml/ha)6 83 to 165

Early-season residual suppression7

Herbicide-tolerant soybeans (early post-emerge)

73 ml/ac (180 ml/ha) 110

Chickpeas, dry field peas, potatoes, sunflowers

49 to 97 ml/ac (120 to 240 ml/ha) 83 to 165


49 to 73 ml/ac (120 to 180 ml/ha) 110 to 165

Fall application

Chickpeas, dry field peas, lentils

73 to 97 ml/ac (180 to 240 ml/ha) 83 to 110


6 Application rates are for all soil types. Use the higher rate for longer residual and under heavier weed populations.
7 When an in-crop application of another registered herbicide is planned.



Water volume

Ground application only

40 L/ac (10 gal/ac)  



Mixing order

Add products separately. Do not mix multiple products at the same time.

  1. Use a 50 mesh filter screen and fill clean tank ½ to ¾ full of water.
  2. Add water conditioners if needed.
  3. Add a Wettable powder or water dispersible granular (WG) tank-mix partner if applicable.
  4. Agitate.8
  5. Add a Micro-encapsulated (ME) tank-mix partner if applicable.
  6. Add the required amount of Zidua SC herbicide.
  7. Add a Liquid, solution or suspension tank-mix partner if applicable.
  8. Add an Emulsifiable concentrate (EC) tank-mix partner if applicable.
  9. Add Glyphosate if needed.
  10. Add any Surfactants or adjuvants if required.
  11. Fill the remainder of the tank with water. If the solution is left for an extended period of time, agitate once every 8 hours before spraying again.

Note: A detergent-based cleaning solution should be used before changing over to a different chemistry.


8 Do not over-agitate at any point in the process.

Tank Mixes

Herbicides for field peas and lentils: Glyphosate9,10, Heat® LQ11, Voraxor®11

Herbicides for chickpeas: Glyphosate9,10, Heat LQ11

Herbicides for corn: Aatrex® Liquid 480, Armezon®, glyphosate9, Heat LQ11

Herbicides for soybeans: Engenia®, glyphosate9, Heat LQ11

Herbicide for sunflowers: Glyphosate9

Herbicide for potatoes: Glyphosate

Herbicides for post-harvest application: Engenia, glyphosate9


9 Glyphosate present as isopropylamine salt, di-ammonium salt or potassium salt.
10 Can be applied in fall to lentils.
11 Pre-seed or pre-emergence only.