These two resources from N.C. State University outline the strategies to prevent or reduce blossom-end rot, a disorder caused by a lack of calcium in the developing fruit, resulting in decay on the bottom of the fruit.
High Soil Salts Injury to Vegetable Crops
If the concentration of any soluble salt in the soil, including those from fertilizers, becomes too high, plants can be injured. This publication will help growers avoid high salt injury to their tomato crops and treat existing problems.
Management of Non-pathogenic Fruit Disorders of Tomato in Organic Production Systems
Tomatoes are susceptible to a variety of non-pathogenic fruit disorders. This article addresses some of the more common disorders, identifying the symptoms and causes with photos. Management recommendations are suitable for organic production.
Common Tomato Fruit Disorders
As part of Cornell University’s Vegetable MD Online, this Web site includes photos to help growers identify the disorder afflicting their tomatoes. Information on each disorder includes why it occurs and how to prevent it.
Tomato Diseases and Disorders
This publication from Iowa State Cooperative Extension places emphasis on prevention, while also addressing diagnosis of symptoms and separating physiological disorders from insect and disease damage.
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