"We had to lift a few posts because of the flood. We lost a negligible number of vines."
Whanganui kiwifruit orchards first experienced the bacterial kiwifruit disease Psa in 2013. Mr Cooper said it was quite difficult getting on top of it and the harvest from the Coopers' worst affected Riverbank Rd orchard was 25 per cent down.
Now he's spending an extra $35,000 annually on spraying and the disease is under control.
"So long as you keep your spraying up and do your job, you hardly know you've got it."
One thing that has changed is compliance. Because they are exporting food, their fruit has to be traceable. There are systems in place to determine which part of an orchard each fruit comes from.
"Since Fonterra fell over the compliance has really been landed on the industry. You have to do a lot of work for compliance, and it's very expensive," Mr Cooper said.