The Queensland government says reports a legal ruling has rendered the Liberal National Party's 2015 sugar bill invalid vindicates their decision to oppose a new LNP sugar amendment last week.
The arbitrator in a dispute between sugar company Wilmar and sugarcane growers has found sections of the amendments to legislation governing sugar contracts made by the LNP in 2015 while it was still in government were unconstitutional.
It follows another effort by the LNP to rush an amendment through parliament last week to force Wilmar to agree to mediation in a dispute with Queensland Sugar Limited.
That amendment was defeated at the final hurdle on its third reading, after the LNP won a motion to bypass the committee process and debate the amendment in the same sitting week it was introduced.
Agriculture Minister Bill Byrne said in a statement the ruling on the original amendments was damning for the LNP.
"The LNP meddling has caused untold damage to the industry for more than a year and now it appears to have been ruled invalid," Mr Byrne said
"Only last week the Palaszczuk government managed to vote down additional legislation that would have been a shortcut to further disaster for Queensland's $2 billion sugar industry."
Shadow agriculture minister Dale Last said they would examine the full decision and consult with cane growers, but hit out at Mr Byrne's response.
"It is galling to hear a Queensland agriculture minister like Bill Byrne crowing happily about poor cane farmers losing out to a cashed-up multinational," Mr Last said in a statement.
"In any event, the LNP will continue to stand up for Queensland cane farmers, their families and their communities."