Co-leader Debbie Ngarewa-Packer said she was "more than disappointed".
The parties have been approached for a comment.
But former leader John Tamihere says it's not about changing the outcome.
Donna Pokere-Phillips went on privately owned land to stop the soil sampling.
"It's a bold move towards making Te Reo Māori a language for all of Aotearoa."
"The day you start talking about inequality is the day you have to start looking at the causation of it."