Cyclade
- Manufacturer
- BASF
- Category
- Growth regulators
- Registered until
- Registration expired
- Registration number
- 16350
- Active materials
- chlormequat chloride230 g/l
- mepiquat chloride75 g/l
- 2-chloroethylphosphonic acid155 g/l
A soluble concentrate containing 230 g/litre (20.5% w/w) chlormequat chloride, 75 g/litre (6.7% w/w) mepiquat chloride plus 155 g/litre (13.8% w/w) 2-chloroethylphosphonic acid.
A plant growth regulator for use in winter and spring barley and winter wheat.
DIRECTIONS FOR USE
Restrictions/Warnings
Late secondary tillering can occur naturally in crops grown on soils subject to moisture stress and Cyclade may accentuate this. This effect will be of more importance in barley varieties being grown for malting, where the presence of green heads may result in rejection of the crop for malting purposes.
Do not apply Cyclade to any crop suffering from herbicide damage or physical stress caused by waterlogging, drought or other conditions. Crops with a substantial moisture deficit should not be treated.
Avoid spray drift on to neighbouring crops.
Avoid overlapping spray bouts.
Do not apply Cyclade if rain or frost is expected, nor if the crop is wet, nor if significant foot disease problems are expected, particularly with Take all.
Do not apply Cyclade to winter varieties sown in the spring.
Do not apply Cyclade to crops on soils of low fertility unless these crops regularly receive adequate dressings of basic and nitrogen fertilisers.
Do not apply Cyclade to barley grown on soils containing more than 10 per cent organic matter.
Winter wheat may be treated.
Do not apply Cyclade at temperatures above 21°C. In these conditions it is best to apply Cyclade in the evening.
Do not use straw from Cyclade treated cereals as a horticultural growth medium or as a mulch.
Some delay in ear emergence may be noticed due to the shortening effect on the higher internodes.
Partial lodging may occur at later stages, though this leaning effect may be desirable to prevent ear loss from stiff strawed crops.
Do not apply Cyclade when the leaf sheaths have split and the ears are visible.
Addition of a non-ionic adjuvant can enhance the efficacy of Cyclade. When using Cyclade, an approved nonionic adjuvant such as Activator 90 may be added to the spray tank at a rate of 40 ml per 100 litres spray solution.
Height reduction and lodging control
Cyclade is a growth regulator which shortens and stiffens the straw of barley and winter wheat by reducing the length of internodes. Cyclade will prevent or suppress early lodging during the vital crop heading stage and thus allow optimum fertiliser use for production of maximum yields in intensive growing systems.
The optimum effect of Cyclade may be expected in a vigorous, actively growing crop, having a good plant population with an adequate nutrient and moisture supply. The greatest response will be seen in crops sprayed at the correct timing and when good growing conditions prevail at and after application.
Crops and Application
WINTER AND SPRING BARLEY
Time of Application
The optimum application timing is from the second node detectable stage on the majority of tillers, up to and including when the flag leaf is just visible on the majority of tillers.
In winter barley, if it has proven impractical to apply Cyclade at the optimum timing, an application can still be made up to and including first awns visible, but lodging control may not be as good as with the earlier timings. Also, crops treated at the later timing are more likely to be subject to moisture stress; therefore particular attention should be paid to growing conditions when applying Cyclade at this later timing.
Do not apply Cyclade when the leaf sheaths have split and the ears are visible.
WINTER WHEAT
Time of Application
The optimum application timing is from the second node detectable stage on the majority of tillers up to and including when the flag leaf is just visible on the majority of tillers.
If it has proven impractical to apply Cyclade at the optimum timing, application at a reduced rate (see below) can still be made after the flag leaf is just visible up to and including the boots swollen stage.
Do not apply Cyclade when the leaf sheaths have split and the ears are visible.
Rates of Application
Apply Cyclade as outlined below in a minimum of 220 litres of water per hectare. When using Cyclade, an authorised non-ionic wetting agent such as Activator 90, may be added to the spray tank at the rate of 40 ml per 100 litres spray solution.
WINTER WHEAT: Optimum timing Second node detectable to flag leaf just visible 2.0 l/ha. Later timing After the flag leaf just visible to flag leaf sheath opening (winter wheat) or awns just visible (winter barley) 1.5 l/ha.
WINTER BARLEY: Optimum timing Second node detectable to flag leaf just visible 2.0 l/ha. Later timing After the flag leaf just visible to flag leaf sheath opening (winter wheat) or awns just visible (winter barley) 1.5 l/ha.
SPRING BARLEY:Optimum timing Second node detectable to flag leaf just visible 1.5 or 1.0 1l/ha.
Qualified Recommendation
Cyclade may be applied at up to 2.0 l/ha in 110 litres of water per hectare although efficacy at this reduced volume has not been evaluated. Application of this product at reduced-volume is at user’s risk with regard to biological efficacy and crop safety.
Following crops
Any crop can be planted following normal harvest of an approved cereal crop trated with Cyclade.
Mixing and Spraying
Apply as a MEDIUM spray, as defined by BCPC.
Never prepare more spray solution than is required.
Three quarters fill the tank with clean water and start the agitation. To ensure thorough mixing of the product, invert the container several times before opening. Add the required quantity of Cyclade to the spray tank while re-circulating, and separately, the required amount of approved non-ionic adjuvant such as Activator 90. Add the remainder of the water and continue agitation until spraying is complete.
When tank mixes are to be used, take due note of any instructions given as to the order of mixing. Each product should be added separately to the spray tank and fully dispersed before the addition of any further product(s).
All tank mixes should be used immediately after mixing.
Rinse empty containers thoroughly, using an integrated pressure rinsing device or by manually rinsing three times. Add washings to tank at time of filling and dispose of container safely.
Wash equipment thoroughly after use.| Registered for cultures | Rate |
|---|---|
| Winter wheat | 1.5 - 2 l |
| Spring barley | 1.5 l |
| Winter barley | 1.5 - 2 l |