• Danger:

    • Very toxic to aquatic life

  • Danger:

    • Causes serious eye damage

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Pack Size: 3L

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Adjuvant

Backrow

Powering effective weed control

In a favourable year, pre-emergence herbicides can deliver high levels of control, but inefficient delivery and the 97% control required to manage black-grass populations, makes this very difficult to achieve. At the pre-/peri-emergence spray timing the target is the soil. The aim is to maximise coverage with the herbicide spray and retain it in the top 5cm of the soil to control flushes of germinating weeds that may emerge over time. However, coverage can often be compromised by drift and herbicide retention can be affected by soil moisture and leaching potential of the herbicide. The adjuvant Backrow is designed to optimise the placement of residual herbicides by reducing drift and increasing herbicide retention, leading to more effective weed control.

Anti-drift

Anti-drift

Designed purely to reduce drift and maximise coverage

Retention

Retention

Key situations in which to use Backrow

  • With all pre-/peri-emergence herbicides to optimise early weed control
  • To prevent drift, thereby increasing herbicide dose and coverage on the target
  • With drift reducing nozzles to improve coverage
  • Where soil:herbicide contact can be hard to achieve and better coverage is needed
  • To retain herbicide in the top 5cm of the soil to kill germinating weeds
  • On light soils to prevent leaching (except pure sand)
  • With herbicides such as metazachlor which are prone to leaching
  • To optimise herbicide performance in dry soils

Powering effective weed control

Key benefits

Improves soil coverage with herbicide spray

At the pre-emergence spray timing (i.e. herbicide applications applied to the soil before the weed has emerged), effective coverage of the soil with the applied herbicide is essential to ensure all germinating weeds “pick up” the herbicide as they emerge to prevent them establishing. Poor coverage can occur as a result of spray drift. Backrow reduces spray drift and improves coverage.

Increases the longevity of weed control by up to 8 weeks

Weeds typically germinate from the top 5cm of soil in the soil profile. Residual herbicides (soil acting herbicides) need to be retained in the top 5cm of soil to control weeds as they germinate – weeds pick up herbicide through their roots and shoots – mainly shoots). However, some herbicides will leach down through the soil profile as they are “prone to leaching” or due to light soils which lack organic matter to bind to. Backrow helps retain residual herbicides for up to 8 weeks, increasing the longevity of weed control.

Improves herbicide performance in dry soils

Residual herbicides (soil acting herbicides) typically require some moisture to work. However, often soils can become dry due to the lack of rain or where light soils “leach” the water easily. Backrow retains soil moisture increasing the performance of residual herbicides.

Reduces leaching of crop protection products to groundwater and crop roots

Some herbicides have a tendency to leach, particularly in light soils which lack organic matter to bind to. Backrow helps retain residual herbicides in the soil profile which prevent the leaching to groundwater and the root zone of the crop.

Value in use

Increases the number of weeds coming into contact with the herbicide at germination

Backrow increases the number of weeds coming into contact with the herbicide at germination. This increases the number of weeds that will be controlled, both reducing seed return and improving crop competition and overall yield.

Helps to control flushes of weeds pre-emergence, reducing reliance on follow up treatment post-emergence

The removal of as many weeds possible pre-emergence reduces the reliance on having to make a follow up herbicide application post-emergence. This can often be costly and certainly in Spring crops, the numbers of herbicides available is becoming few and far between. Controlling weeds pre-emergence will help to ensure crops establish free from weed competition.

Improves weed control in dry conditions

Whilst it is not advisable to apply residual herbicides in dry conditions, sometimes there's no other option due to the risk of not getting the spray on at all. In other situations, it may just be that the herbicide went on in good conditions and suddenly soils have become dry due to prolonged, hot dry days. Backrow will improve weed control in these situations.

Improves crops safety and water stewardship

By keeping herbicides and other crop protection products away from the crop root zone, Backrow improves crop safety, which can sometimes be a concern in very wet soils in autumn. Backrow is also a valuable water stewardship measure for herbicides and other crop protection products that may have a tendency to leach through the soil.

How Backrow works

Anti-Drift
Retention

Reduces spray drift

Backrow reduces spray drift significantly by reducing the number of droplets <100 microns which are prone to drift. It also improves deposition and coverage by improving spraying uniformity at the nozzle. This improvement in coverage maximises the number of weeds coming into contact with the herbicide at germination, leading to an increase in the number of weeds controlled.

Retains herbicide and moisture in top 5cm of soil

Backrow improves herbicide and moisture retention in the top 5cm of the soil. This increases the longevity of weed control by up to 8 weeks and increases herbicide performance in dry soils. By retaining the herbicide in the top 5cm of the soil, away from the root zone of the crop, Backrow also improves crop safety and helps to prevent the leaching of all subsequent crop protection inputs to groundwater.

Powering effective weed control

+9% increase in Black-grass control
+13% increase in broadleaved weed control
Improved efficacy in dry conditions
Reduced leaching
Improved crop safety
Case Study  |  Adjuvant

Backrow improves herbicide performance

Agrii agronomist, Matthew Clark, believes the addition of adjuvant Backrow to the residual mix of herbicides has an important role to play in improving herbicide performance.

Read case study
See all case studies
Case Study  |  Adjuvant

Backrow driving improved grass-weed control in Scotland

Despite developing grass challenges on the Scottish borders, agronomist Greig Baird from Agrii has seen encouraging results adding our Backrow adjuvant to the pre-emergence mix.

Read case study
See all case studies

How to use Backrow

  • Backrow is approved for use in over 60 crops. For a full list of crops, please get in touch
  • For use with all residual herbicides applied pre-/peri-emergence
  • Effective in dry soils but for best results apply in the presence of moisture
  • For use in all soil types except pure sand
  • Add Backrow to the spray tank first after water

Application rate per hectare

Autumn rate 0.2 L/ha Spring rate 0.4 L/ha

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Get in touch

Require technical assistance or product information? Please get in touch with our Technical Manager, Stuart Sutherland.

For all other general enquiries, please email or call us at the office. If you’d prefer, drop us a message using our contact form and we’ll get back to you as soon as possible.

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