Data as of: 2026-08-05 Administration DE EN
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Merlin Duo

Use number: 00B159-00/00-005

Crops
maize
Pests
annual dicotyledonous weeds
Area of use
Outdoors
Field of activity
Herbicide
Application technique
spraying
Growth stage
10 – 13
Applications per crop
Applications per growing season
1
authorised until
2028-05-31

Application rates

ConditionProduct rateWater rate
1.5 LH 300 – 400 LH

Pre-harvest intervals

CropPre-harvest intervalRemarksexcluded
maize The PHI is covered by the conditions of use and/or the vegetation period remaining between the application of the plant protection product and the use of the product (e. g. harvest) or the setting of a PHI in days is not required resp.

Timing of application

Restrictions

Code Text Crop Buffer zone
NW606 The only case in which the product may be applied without loss reducing equipment is when at least the buffer zone stated below is kept from surface waters - except only occasionally but including periodically water bearing surface waters. Violations may be punished by fines of up to 50 000 Euro. 10 m
NG362 Only one treatment with a maximum application rate of 850 g terbuthylazine per hectare may be carried out within a three-year period on the same area with this product and other products containing terbuthylazine.
NG368 To protect groundwater, products containing the active substance isoxaflutol must not be used in the following calendar year on the same area.
NG404 Between treated areas with an incline of more than 2% and surface water - except only occasionally but including periodically water-bearing surface water - there must be a border under complete plant cover. The border's protective function must not be impaired by the use of implements. It must be at least 20 m wide. This border is not necessary if: - sufficient catching systems are available for the water and soil transported by run-off, which do not flow into surface water or are not connected
NT102-1 In a strip at least 20 m wide which is adjacent to other areas, the product must be applied using loss reducing equipment which is registered in the index of 'Loss Reducing Equipment' of 10 September 2013 (Federal Gazette AT 23.10.2013 B4) as amended, and be registered in at least drift reducing class 75 % (except agriculturally or horticulturally used areas, roads, paths and public places). Loss reducing equipment is not required if the product is applied with portable plant protection equipme
NW605-2 When applying the product on areas adjacent to surface waters - except only occasionally but including periodically water bearing surface waters - the product must be applied with equipment which is registered in the index of 'Loss Reducing Equipment' of 10 September 2013 (Federal Gazette AT 23.10.2013 B4) as amended. Depending on the drift reduction classes for the equipment stated below, the following buffer zones must be kept from surface waters. In addition to the minimum buffer zone from su
WH9161 The instructions for use must include a summary of weeds which can be controlled well, less well and insufficiently by the product, as well as a list of species and/or varieties showing which crops are tolerant of the intended application rate and which are not.
WP734 Damage is possible to the crop.
WP775 Under disadvantageous weather conditions, damage is possible to succeeding crops, in particular winter cereals.