Betanal Tandem should always be applied in mixture with a suitable adjuvant oil such as 95% methylated rape seed adjuvant oil or 95% methylated vegetable adjuvant oil.
For best results, the largest weeds should not be beyond the fully expanded cotyledon stage at spraying.
Weeds controlled at the expanded cotyledon stage by a series of well-timed Betanal Tandem + oil sprays

Weeds controlled at the expanded cotyledon stage by a series of well timed Betanal Tandem + oil + Goltix 70 SC sprays

* under difficult conditions, improved control of these weeds will be obtained by using the tank mixture with Goltix 70 SC.
Soil
Betanal Tandem may be used on all soil types. On soils with more than 5% organic matter content residual activity may be reduced.
Drift
Avoid drift to areas outside those being sprayed, having due regard to the prevailing weather conditions and spray quality being used. The risk of drift is greater when a FINE quality spray, as recommended for this product, is used.
Timing
The first Betanal Tandem low-volume application should be made when the majority of crop plants have reached the fully expanded cotyledon stage.
The earliest germinating weeds should not be larger than the fully expanded cotyledon stage at the time of spraying. This is essential on organic soils, and on mineral soils where a pre-emergence treatment has not been applied. Further Betanal Tandem low-volume sprays must be applied as each new flush of weeds reaches the cotyledon stage.
On mineral soils, where a pre-emergence spray has been used, the first Betanal Tandem low-volume spray may be delayed until the first flush of weeds reaches cotyledon stage. Any early germinating susceptible weeds which are slightly larger at this time may not be killed by the first treatment. They will usually be checked and then controlled by later applications.
Where a pre-emergence treatment has been applied as a band spray, it will be necessary to time the first post-emergence Betanal Tandem low-volume treatment according to the size of weeds present between the rows where there is no pre-emergence effect.
Successful results from a low-volume programme are achieved by applying each spray when the previous one is still showing an effect on the weeds.
A minimum of 5 days must elapse between treatments.