3C Chlormequat 750

Manufacturer
BASF
Registered until
2024-05-31
Registration number
16690
Active materials
A soluble concentrate containing 750 g/l (65.2% w/w) chlormequat chloride.
A plant growth regulator for use in wheat, oats, winter barley, rye, triticale and ornamentals.
 
DIRECTIONS FOR USE
Restrictions/Warnings
Avoid spray drift on to neighbouring crops.
3C Chlormequat 750 should be applied to crops during good growing conditions at the correct timing.
Do not apply 3C Chlormequat 750 when the crop is wet or if rain or frost is imminent.
Do not apply 3C Chlormequat 750 to very late sown spring crops.
Do not apply 3C Chlormequat 750 to crops on soils of low fertility unless these soils regularly receive adequate dressings of nitrogen fertilisers.
3C Chlormequat 750 may be applied to wheat, oats and winter barley undersown with grasses and clovers.
Caution is needed if using mixtures of liquid nitrogen fertilisers and 3C Chlormequat 750 as scorching may result in certain circumstances.
Wash equipment thoroughly after use.
Do not use straw from 3C Chlormequat 750 treated cereals as a horticultural growth medium or as a mulch.
Lodging Control
3C Chlormequat 750 produces shorter, thicker and stronger stems in wheat and oats which are more resistant to lodging and help to prevent damage from eyespot.
Lodging control will not be so pronounced in winter barley with 3C Chlormequat 750 but will help to maintain yield potential by encouraging better root development and tiller survival.
On certain ornamentals (see below) the use of 3C Chlormequat 750 can promote a more compact bushy habit.
 
CROPS
WINTER WHEAT AND AUTUMN DRILLED SPRING WHEAT
Low lodging risk situations
Time of Application
Apply 3C Chlormequat 750 from leaf sheath lengthening stage up to and including the second node detectable stage. The optimum application time is the leaf sheaths erect stage just prior to the first node detectable stage.
Rate of Application
Apply 1.6 litres 3C Chlormequat 750 in 220-450 litres of water per hectare.
High lodging risk situations
Time of Application
Apply 3C Chlormequat 750 either as a split application or as a single dose. As a split application apply the first dose at the tillers formed to leaf sheath lengthening stage followed by the second dose at the leaf sheath erect up to and including the first node detectable stage. Do not apply later than second node detectable stage. If a split application is not possible the full dose at leaf sheath erect just prior to the first node detectable stage is recommended.
Rate of Application
When using a split application, apply 1.6 litres 3C Chlormequat 750 at the earlier timing, followed by 0.6 litres 3C Chlormequat 750 at the later timing, both in 220-450 litres of water per hectare.
If using a single dose, apply 2.2 litres 3C Chlormequat 750 in 220-450 litres of water per hectare.
The use of Terpal sequentially is recommended for improved lodging control where the crop is growing vigorously. See Terpal literature for full details.
 
SPRING WHEAT (SPRING DRILLED)
Time of Application
Apply 3C Chlormequat 750 during good growing conditions at the leaf sheaths erect stage just prior to the first node detectable stage.
Do not apply 3C Chlormequat 750 later than the first node detectable stage on the majority of tillers.
Rate of Application
Apply 1.1 litres 3C Chlormequat 750 in 220 450 litres of water per hectare.
Winter wheat varieties sown in the spring should be treated at the winter wheat rate.
 
WINTER BARLEY
Whilst 3C Chlormequat 750 is less consistent in winter barley for the control of lodging than in wheat or oats, the relatively early application timing can promote changes in the pattern of growth which may lead to an increase in yield. Root development and tiller production is largely determined in the autumn of sowing. 3C Chlormequat 750 applied in the autumn can stimulate both root system development and tiller production. 3C Chlormequat 750 may be applied either as a split application or as a single dose.
The use of Terpal sequentially is recommended for reliable lodging control. See Terpal literature for full details.
Time of Application
When using a split dose treatment, apply the first dose in the autumn from when the crop has three leaves once adequate cover is established up until early tillering, followed by the second dose in the spring from mid-tillering to just prior to the first node detectable stage. It is important that both parts of the split dose are applied. When using a single dose, apply 3C Chlormequat 750 in the spring from mid-tillering to just prior to the first node detectable stage.
Rate of Application
When using a split dose, apply 0.6 litres in the autumn, followed by 1.6 litres in the spring, both in 220-450 litres of water per hectare. When using a single dose, apply 2.2 litres 3C Chlormequat 750 in the spring in 220-450 litres of water per hectare.
 
OATS
3C Chlormequat 750 will reduce stem length in oats under most circumstances, but resistance to lodging will be greater on short strawed varieties.
Time of Application
Apply 3C Chlormequat 750 at the second node detectable stage on the majority of tillers.
Rate of Application
Apply 2.2 litres 3C Chlormequat 750 in 220 450 litres of water per hectare.
For full effect, an authorised non-ionic wetter at 25 ml per 100 litres must be added to the spray mixture, except when using mixes of 3C Chlormequat 750 with Corbel.
 
RYE
3C Chlormequat 750 may be used on rye. Although widely used on the continent the results of UK trials have been less than consistent in effects on plant height and lodging.
The use of Terpal sequentially is recommended for improved lodging control where the crop is growing vigorously. See Terpal literature for full details.
Time of Application
Apply 3C Chlormequat 750 when the first node is detectable on the majority of tillers.
Rate of Applicatione
Apply 2.2 litres 3C Chlormequat 750 in 220 450 litres of water per hectare.
 
TRITICALE
The results of a number of independent trials have shown that an increase in crop yield and a reduction in early lodging can be obtained following an application of 3C Chlormequat 750.
The use of Terpal sequentially is recommended for improved lodging control where the crop is growing vigorously. See Terpal literature for full details.
Time of Application
Apply 3C Chlormequat 750 from mid tillering to just prior to the first node detectable.
Rate of Application
Apply 2.2 litres 3C Chlormequat 750 in 220 450 litres of water per hectare.
 
Mixing and Spraying
Aerial applications
3C Chlormequat 750 may be applied from the air to wheat, winter barley, oats, rye and triticale at the recommended rates in 25 60 litres of water per hectare, but results may not be as uniform as from ground applications.
When applied by air to oats, 3C Chlormequat 750 should be used in conjunction with an authorised non-ionic wetter at the recommended rate.
Aerial application must not be made in tank mix with any other products.
Mixing
Half fill the spray tank with clean water and start the agitation. Pour in the required amount of 3C Chlormequat 750. Add the remainder of the water and continue agitation until spraying is completed.
When tank mixes are to be used, each product should be added separately to the spray tank, taking due note of any instructions given as to the order of mixing.
Registered for culturesRateBBCH
Winter wheat150 - 300 l21 - 32
Spring wheat200 - 300 l29 - 32
Winter barley150 - 200 l30 - 32
Winter oats200 - 400 l30 - 32
Spring oats200 - 400 l30 - 32
Winter rye200 - 300 l30 - 32
Spring rye200 - 300 l30 - 32
Winter triticale200 - 400 l30 - 32
Spring triticale200 - 400 l30 - 32