Medax Top

Manufacturer
BASF
Registered until
2025-06-30
Registration number
16574
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A plant growth regulator for use in winter wheat, winter barley and winter triticale.

A suspension concentrate containing 50 g/l prohexadione-calcium and 300 g/l mepiquat chloride.

DIRECTIONS FOR USE
Restrictions/Warnings
Avoid boom overlaps and ensure that the boom height is correctly adjusted.
Occasionally low levels of temporary leaf tipping may occur following application; this tipping only affects the leaves present at application and will not affect the final yield.
Do not apply Medax Top to any crop suffering 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.
PROCESSED CROPS: Effects on bread making and brewing have not been tested. Consult grain merchant or processor before use.
 
General information
Medax Top is a plant growth regulator for reduction of crop height, which can lead to lodging control and yield protection in all varieties of winter wheat, winter barley and winter triticale.
Lodging reduction and yield response in winter triticale are less consistent than in winter wheat and winter barley.
 
Crops
Winter wheat, winter barley, winter triticale
Time of Application
Apply Medax Top from beginning of stem extension (BBCH GS 30) up to and including flag leaf fully emerged (BBCH GS 39)
Rate of Application
Apply 1.5 litres
Medax Top in a minimum of 200 litres of water per hectare.
Qualified recommendation for reduced water volume Medax Top may be applied at 1.5 litres per hectare in 100 litres water per hectare although efficacy data to support this reduced volume has not been provided. Therefore, application at reduced-volume is at user’s risk with regard to biological efficacy.
 
Following crops
Any crop can follow normally harvested winter wheat, winter barley or winter triticale and ploughing is not essential before sowing the next crop.
 
Mixing and Spraying
Apply Medax Top as a MEDIUM spray, as defined by BCPC, in a minimum of 200 litres of water per hectare.
PRODUCT MAY SEPARATE - SHAKE WELL BEFORE USE. Half fill the spray tank with clean water and start the agitation. Pour in the required amount of Medax Top. 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.
 
Tank cleaning
Following application of Medax Top thoroughly clean the sprayer using clean water in accordance with the guidance provided by the equipment manufacturer.
Registered for culturesRateBBCH
Winter wheat1.5 l30 - 39
Winter barley1.5 l30 - 39
Winter triticale1.5 l30 - 39