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Scroll down to find out information on how to optimise applications of ProClova XL. Alternatively, download the information in PDF format here.
Maximising the effect on docks
ProClova® XL will deliver ‘susceptible’ levels of control. This means a control level of between 85% and 100% when assessed at the end of the season on docks present at time of spraying.
For an optimal effect, 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 8°C) and overly dry conditions: active growth is unlikely. which inhibit active growth. Wait for weather to change and positive signs of active growth emerge.
- 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 some, preventing targeting of spray. Shading by an excessive amount of grass will also have an effect.
- Spraying old docks that are large in size with extensive tap root systems, particularly those in grazing fields.
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
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. ProClova XL must be applied in 200 litres water/hectare.
The table below provides a list of nozzles which are options based on the parameters described above:
| Billericay Farm Seervices (BFS) | Lechler (3 bar) | Hardi (3 bar) | Teejet |
|---|---|---|---|
| Air Bubblejet 03 | IDKN 120-03 | Minidrift (MD) 04 | AIXR 110 4 |
| Air Bubblejet 04 | IDKN 120-025 | Minidrift Duo (MDD) 04 | AITTJ 60 110 03 |
| Air Bubblejet 05 | IDKN 120-03 | AITTJ 60 110 04 | |
| BFS Pulzar 04 | IDKN 120-04 | ||
| BFS Pulzar 05 | IDKN 120-05 |
Temperature Check
For optimium results, spray when overnight temperatures are forecast to be above 80C for a period from 3 days before to 3 days after proposed application date. Use Temperature Check, which can be found in the Best Practice section of the Corteva Forage App.
Speed of kill
With respect to docks, this will be significantly slower with ProClova XL than other Corteva grassland products. Be patient, wait at least 21 days before cutting.
Docks emerging from root fragments
Docks emerging from the root fragments from a previous grass ley are harder to control than those emerging from seed.
Where large well-established populations of docks are present in the preceding ley, then consider an application of glyphosate.
Hard water and use of water conditioners
Where it is your normal practice to add in a water conditioner then select an acidifying water conditioner when applying ProClova XL. In hard water areas, a water conditioner can soften water and prevent hard water cations “locking up” the herbicide.
Avoid ammonium sulphate types as these have additional adjuvant properties which could be detrimental to clover safety.
Guidance on thistle control where clover is present
ProClova XL will not control thistles. There are no effective solutions for thistle control where clover is present. The best option is to target them as a spot spray using Grazon Pro.