The political fate of federal Agriculture Minister Bridget McKenzie will rest on whether her failure to declare a shooting club membership worth $180 one month before approving a $36,000 grant is deemed a breach of ministerial standards.

Prime Minister Scott Morrison said on Thursday he would not pre-empt the findings of a departmental review into the Nationals deputy leader's conduct as a minister, which is expected to be finalised over the coming days.

He offered only lukewarm support for the embattled minister on Thursday, saying he was “prepared to take whatever action is necessary” once he received advice on whether she broke ministerial standards.

The Age and The Sydney Morning Herald can also reveal the Australian Clay Target Association announced in 2015 Senator McKenzie had accepted the role of its patron, and she was still listed in the position in the association's journal as recently as December last year.