Calibre Max SXPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

A soluble granule formulation containing 400 g/kg thifensulfuron methyl and 100 g/kg tribenuron methyl, sulfonylureas, for spring weed control in wheat and barley.

Weed control
Calibre Max SX contains thifensulfuron-methyl and tribenuron-methyl, sulfonylurea (ALS inhibitor) herbicides which work mainly by contact action and is most effective if applied when the weeds are small and actively growing. Good spray cover of the weeds must be obtained for best results.
Susceptible plants cease growth almost immediately after application and symptoms can be seen about two weeks after application. Weed control may be reduced when soil conditions are very dry. 

Resistance
When herbicides with the same mode of action are used repeatedly over several years in the same field, selection of resistant biotypes can take place. These can propagate and may become dominating. A weed species is considered resistant to a herbicide if it
survives a correctly applied treatment at the recommended dose. Development of resistance with a weed species can be avoided or delayed by alternating (or tank mixing) with suitable products having a different mode of action. For control of Chickweed this product must always be applied with an alternative mode of action product at recommended rates.
A strategy for preventing and managing resistance should be adopted. Further details and advice on how to implement such a strategy may be obtained from your crop advisor or chemical supplier. The Herbicide Resistance Action Committee (HRAC) also produces guidelines which may be consulted for additional information.

Crops
CALIBRE MAX SX can be used on all varieties of winter wheat, spring wheat, winter barley, and spring barley between the growth stages given below.

Dose
Apply CALIBRE MAX SX at 100 – 150 g/ha.

Timing
CALIBRE MAX SX should be applied in the spring after 1st February from the three-leaf
stage (GS 13) up to and including the flag leaf ligule/collar just visible (GS 39).

Following crops
Only cereals, oilseed rape, field beans or grass may be sown in the same calendar year as harvest of a cereal crop treated with CALIBRE MAX SX. In case of crop failure for any reason, sow only cereals within three months of application of CALIBRE MAX SX. Before sowing, soil should be ploughed and cultivated to a depth of at least 15-cm.

Volume and application
BEFORE USING CALIBRE MAX SX, SPRAYING EQUIPMENT MUST BE CLEAN AND FREE FROM CONTAMINATION WITH OTHER PESTICIDES.
Application should be made in 100-200 litres of water per hectare, using suitable ground equipment to give good spray cover of the weeds. When crops are thick or weed growth is dense, use 400 litres of water per hectare. Care should be taken not to overlap spray swaths.

Mixing
Quarter fill the spray tank with clean water, start the agitation and add the required quantity of CALIBRE MAX SX directly to the tank without prior creaming. Continue agitation while topping up the tank and while spraying.