ABSTRACT
Distribution of area of disease caused by a slowly developing soil-borne pathogen
Distribution of large areas of disease caused by an air-borne pathogen with rapid development
In-line distribution of disease transmitted through pruning wounds
Distribution in large sectors
Widespread distribution
Table 4 Examples of distribution of the major parasitic diseases in tomato crops in Europe
Table 5 Distribution of principal nonparasitic dieases in tomato crops
Symptoms on leaflets and leaves To simplify diagnosis, the symptoms observed on the leaflets and leaves have been divided into four subsections: – Plant growth irregularities and/or deformed leaflets and leaves (p. 47); – Leaflet and leaf discoloration (p. 91); – Spots on leaflets and leaves (p. 149); – Wilting, necrosis, and dried leaflets and leaves (with or without yellowing) (p. 217).
