"Most of this policy is not tenable and we at the Act party are acutely aware of it," he said.
Specifically, rules which required all paddocks in Otago and Southland to be resown by November 1, were "idiotic," Cameron said.
"They cannot be implemented."
Listen below:
In a recently released statement Cameron said, "local issues must have local solutions, not a one-size-fits-all approach from Wellington".
Cameron told Mackay he also questioned how local councils would be able to police any infringements of the new rules.
"The central Government has an overarching proposal that even Environment Southland - as an example - cannot make sense of, and then you've got the enforcement reality between themselves and their farmers."
"Environment Southland is more than happy to work with farmers and vice versa, but these ... arbitrary rules have left the total networking between Environment Southland and the farmers up in the sky."
Meanwhile, Cameron said he was looking forward to his role as backbench MP, admitting he thought his chance of getting in was "50/50" being number eight on the Act Party candidate list.
"What a privilege, as a dairy farmer for 30 years, finally, I think we can bring - as the Act Party - some real solutions to difficult problems."
Although his new role would "throw a few pennies into the kitty," Cameron said getting in to Parliament was "never about the money".
"It's about fixing a lot of the rot that I saw unfortunately metastasising in rural New Zealand."
Also in today's interview: Cameron gave an update on the dry conditions at his Northland dairy farm.
