1. Agrios, G.N. (1997) Plant Pathology, 4th edn, Academic Press, San Diego.
2. Anon. (1984a) Winter Wheat Managed Disease Control, Leaflet 831, Ministry of Agriculture, Fisheries and Food, Alnwick, UK.
3. Anon. (1984b) Winter Barley Managed Disease Control, Leaflet 843, Ministry of Agriculture, Fisheries and Food, Alnwick, UK.
4. Anon. (1985) Spring Barley Managed Disease Control, Leaflet 844, Ministry of Agriculture, Fisheries and Food, Alnwick, UK.
5. Anon. (1986) Use of Fungicides and Insecticides on Cereals, Booklet 2257, Ministry of Agriculture, Fisheries and Food, Alnwick, UK.