Northland, Auckland, Waikato, Bay of Plenty and Hawkes Bay have been declared drought affected and farmers from Manawatu-Rangitikei, Wairarapa and Taranaki hope to follow suit so they can access government benefits.
But farmers have been warned they will not get the same level of benefits in the future if droughts become more common.
Acting Prime Minister Bill English told TVNZ's Breakfast show said while the Government was currently providing hardship assistance to families, farmers would have to adapt to the increasing risk of drought.
"We've got research in place for instance to find more drought resistant grasses and farmers have for years been adapting their management practices.''
Mr English denied the Government was giving assistance to failing businesses in a way it did not do for other industries.
"I think we've got the balance about right - it's not supporting the business in the sense of paying their bills for them, it's just dealing with those cases involving extreme hardship.