1. Anon. (1979 ). Summary of disease incidence in Kent, Surrey and Sussex, September 1979 .Ministry of Agriculture, Fisheries and Food, ADAS, South East Regional Sub-Centre, Wye, pp.1 -3 .
2. R. T. Burchill, and A. Jennens (1982 ). Onion leaf blotch - epidemiology .National Vegetable Research Station 32nd Annual Report for 1981, pp.64 -65 .
3. Factors Affecting Spore Liberation byCladosporium carpophilum
4. Laboratory studies on the growth and reproduction of Cladosporium allii-cepae, the cause of leaf blotch of onion