General Information


MASTERCOP is a fungicide and bactericide. To be applied as an aerial, ground dilute or ground concentrate spray unless specifically directed otherwise in the specific crop use directions. The per acre use rate of MASTERCOP is applicable for both dilute and concentrate sprays. Complete coverage is essential to assure good product performance. The required amount of product must be mixed with enough water to thoroughly cover the crop with spray mixture and be applied to the point of runoff. The volume of water per acre will differ depending on the specific crop and the equipment used.

See MASTERCOP label for specific rates and timing of application for each crop. Use higher rates and shorter treatment intervals when conditions favor high disease pressure. Use higher rates for large trees or mature crop plants.


Do not use MASTERCOP with Allette fungicide.

Mastercop may be reactive on metal surfaces such as galvanized roofing. Avoid contact with cars, houses, or other metal surfaces susceptible to damage. Mastercop may discolor sprayed surfaces such as masonry or wood.


MASTERCOP is compatible with most of the pesticides present in the market; do not mix with fenvalerate, parathion, chlorpyrifos or dichloran.

Limitations, Restrictions, and Exceptions

Season: Growing season

Maximum Application Rate (pints per acre): 3.0

Maximum Annual Rate (pints per acre): 12.0

Minimum Retreatment Interval: 7 days

Use Notes

Initiate sprays at first sign of flowering and repeat on a weekly schedule until just before harvest. Apply in sufficient water for thorough coverage. Use the higher rates when conditions favor disease.

Restricted Entry Interval

48 hours