PGG Wrightson Seeds general manager New Zealand David Green said the meeting covered a variety of subjects, but one the questions farmers had was to do with compensation.
Mr Green said the company had made a mistake, and in some cases there would have to be "change in some of the feeding management of these crops".More supplementary feed might be needed, for example.
"Those sort of situations are the things that we will entertain in terms of claims."
The company had not yet "honed down on how that process will work".
However it was conscious of being equitable and consistent.
"We want to think through that process very carefully, and then when we're in a position to communicate that process, we're going to do that directly with the 556 farmers."
Mr Green said he hoped that would happen in the next few weeks.
It was too early to say what the cost would be to the company.
"It's really, really difficult to [estimate] some sort of number."
david.loughrey@odt.co.nz