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Scroll down to find out how to optimise use of ProGrass. Alternatively, download the information in PDF format here.
Maximising the efficacy of ProGrass™ on docks
ProGrass will deliver ‘susceptible’ levels of control. This means a control level of between 85% and 100% on docks present at the time of spraying when assessed at the end of the season.
For optimal efficacy, leaf area, leaf health and active growth are key.
The following factors can limit the actual level of control achieved:
- Disease and pests – ramularia and dock beetles.
- Cold temperatures (below 6oC during the day and night) and overly dry conditions: active growth is unlikely. Wait for weather to change and positive signs of active growth.
- Spraying too soon after cutting - leaves are too small relative to the size of roots.
- Spraying docks that have started to flower or docks with many older leaves that lack active growth.
- Too many docks may shade others, preventing the spray reaching the target. Shading by an excessive amount of grass will also have an effect.
Topping and spraying dock re-growth once it reaches optimal size improves the levels of control if these factors are present.
This practice ensures all plants are at a similar size with leaves that are free from disease and dock beetle damage.
Drift reducing technology must be used
To comply with the aquatic buffer zone requirements, this product must be applied using drift reducing technology. Air inclusion nozzles are probably the best for reducing drift by creating larger droplets containing small bubbles of air. This coarser droplet enables the spray to travel accurately from nozzle to target.
On impact, the droplet bursts leaving small droplets across the leaf surface. This leads to less drift and more deposit of product on to the target leaf.
Travelling speed and water volume will determine the exact type of nozzle to use:
ProGrass must just be applied in 200 litres of water/hectare.
The table below provides a list of nozzles which are options based on the parameters described overleaf:
| Billericay Farm Services (3 bar) | Lechler (3 bar) | Hardi (3 bar) | Teejet |
|---|---|---|---|
| Air Bubblejet 03 | IDKN 120-03 | Minidrift (MD) 04 | AIXR 110 4 |
| Air Bubblejet 04 | IDKT 120-025 | Minidrift Duo (MDD) 04 | AITTJ 60 110 03 |
| Air Bubblejet 05 | IDKT 120-03 | AITTJ 60 110 04 | |
| BFS Pulzar 04 | IDKT 120-04 | ||
| BFS Pulzar 05 | IDKT 120-05 |
Guidance on thistle control
ProGrass will not control thistles. If the weed spectrum is wide and includes thistles and the field is a grazing pasture then use Forefront® T. To find out more, click here.
If the weed spectrum is mainly thistles and the field is a grazing pasture then use Thistlex® Pro. Read more here.
Guidance on chickweed control
ProGrass will give control of both common chickweed and mouse-eared chickweed.
