Mr Orsborn said that any monies remaining will go the Federated Farmers' Drought Relief Fund.
Wairarapa sheep and beef farmer Rob Dick farms a 300ha property near Gladstone and he said the drought was the worst he had experienced during his six years in the region.
Mr Dick said that compared to the drought in 2008, this one had been going on much longer.
"It started in spring meaning there was no spring growth and the hot summer has denied vital rain for stock drinking water and for supplementary feed crops," Mr Dick said.
"Also geographically it affects a much larger region, meaning farmers are now feeding stock with winter feeds and being forced to source supplementary feeds from the South Island. I don't think the full effects of this drought will be felt until next year."
Local, regional and national businesses supporting the Drought Shout are Sharpes Stockfeed, AllFlex, Westpac, BNZ, ANZ, Rabo Bank, Sellar & Sellar, Vodafone, Motunui Romney, Breadcraft, MacDougalls, Tranzit Coachlines, RD1, Elders, Seales Winslow, Ballance Agri-Nutrients, Southey Sayer, Farman Turkington Forestry, Farmlands, WoodNet, FMG, ASB, John Griffith Livestock, Gallagher and LIC in raising over $65,000 to cover the costs of the day.
The Drought Shout will run from midday until 5.30pm on April 11 at the Tui Brewery, Mangatainoka.
For further information on how businesses can contribute log on to www.bakerag.co.nz