The National Party has retained most of its rural vote, winning all its rural electorate seats except West-Coast Tasman.
National's David Carter says he will know within a week if he is to continue as Minister of Agriculture, Forestry and Biosecurity.
"I think there's a lot of unfinished business with regards to water, making sure we get a very sensible emissions trading policy."
Mr Carter says he would push for more irrigation of farmland.
"We've now started a lot of work on water. I want to actually see some increased areas of irrigated land."
Mr Carter says it is also vital to ensure constant reviews of New Zealand's biosecurity arrangements at the border.
"The downside if we get a major incursion in this country is just huge. So we do need to concentrate on getting the best biosecurity systems in the world."
Labour's Damien O'Connor, the party's agriculture spokesperson, has taken back West-Coast Tasman from National's Chris Auchinvole by a margin of more than 2000 votes.
Mr O'Connor expects asset sales and foreign ownership to be high on the list of issues he'll be battling the Government on in the next three years.
He sees Fonterra's share trading plan as another issue where the debate isn't over.
"My personal view is that trading among farmers is not needed now. The redemption risk has been overplayed.
"But John Key and some of his mates seem determined to get shares from Fonterra and any other tradeable commodities onto the stock exchange and in my view that's a real danger for the entire New Zealand dairy industry."
Former Federated Farmers president and ACT candidate, Don Nicolson, who was No 3 on the party's list, has missed out on a seat in Parliament.
The party won the Epsom seat but its share of the party vote was too low to allow it to bring in any other MPs.
