Justice Hilary Penfold on Monday morning sentenced Jessa Latona and Heather McCabe to nine months, suspended on entering a 12-month good-behaviour order.

And the ACT Supreme Court judge questioned whether Greenpeace “cynically” used junior staff members of good character in the hope they’d get lighter sentences in court.

Latona, 36, and McCabe, 49, pleaded guilty to one charge of damaging or destroying Commonwealth property.

Latona and McCabe, both volunteers with the conservation group, scaled 1.8 metre fences to break into a CSIRO farm at Ginninderra on July 14 last year.

They filmed themselves vandalising a trial crop of wheat which had been genetically engineered to increase its nutritional value.

Greenpeace used the incident to garner publicity over the issue of genetically modified crops, releasing video of the women destroying the wheat with whipper snippers.

The crop was being grown with a view to testing the quality of wheat and dough produced from the modified harvest.

The protest stemmed from a CSIRO’s refusal to release documents under Freedom of Information laws, saying they were commercial-in-confidence.

The court heard Latona and McCabe were environmentally conscious women with a keen interest in food quality.

They had no criminal records at the time, and Latona has since given birth to her first child.

The pair have since said they regret their actions, and the court heard they did not initially appreciate the full consequences of their actions.

In the aftermath of the protest Greenpeace paid $280,000 in reparations to CSIRO.

Justice Penfold this morning said the act was clearly carried out at either the instigation of, or with the backing of, Greenpeace Australia.

She said she hoped Greenpeace were also unaware of the ramifications of the plan, rather than “cynically” exposing junior staff members to the justice system.

Outside the court Greenpeace Australia-Pacific head of programs Ben Pearson welcomed the verdict, but said the two women were always aware of what they were getting into.

“With all due respect to the judge all Geenpeace employees, activists involved in these types of activities, are fully briefed on what will happen and the consequences of what will happen,” he said.

“Nobody does this in ignorance of the consequences.

“Jess and Heather are people of honest integrity.

“They undertook this action with their eyes wide open.’’

The judge recorded convictions against the two women.