Grains and field crops
These results are tabulated for 3 zones, A,B and C, which are delineated on a map in Bulletin No. 3575. "Nitrogen Fertilisers for Cereal Production" by M.G. Mason - (Journal of' Agriculture of W.A. - May 1968)
Western Australia, Nitrogen fertilizers, Application rates, Wheat, Barley, Linseed, Rape.
Mason, M G. (1970), Nitrogenous fertilisers for cereal grain and oil crops - Results from 1970 Trials with wheat, barley, linseed and rape. Department of Agriculture and Food, Western Australia, Perth. Report.