Tomatoes Materials from AVRDC.

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Production Pest management Harvest and postharvest

Producing tomatoes

Grafting tomatoes

Protected structures

Seed production

Variety testing


Common diseases

Harvest and postharvest

Seed production

Producing Tomatoes

Grafting Tomatoes

Protected structures

Variety testing

Pest Management

  • General symptoms: Sucking pests cause wilting, stunting, curling or distortion of new growth, spots or stippling of the leaf surface, or a sticky substance or black fungal growth on the upper leaf surface. Chewing pests cause holes in leaves, silvering of leaf tissue, complete removal of leaf tissues and burrowing in or around plant stems, branches or trunks.

Insects commonly affecting Tomatoess (AVRDC)

Insect Image Factsheet

Common Diseases

Tomato Diseases Factsheet


  • General symptoms: Viruses often cause leaf distortion, stunting and linear color contrasts - e.g., green and yellow striping. Insects often spread the virus.


  • General symptoms: Bacteria often causes watersoaking, wilts leaf and fruit spotting and rotting. Note: If you place a diseased sample in a glass of clear water, you can often see the bacterial "exudate" leaking from the plant)

Bacteria Diseases

Fungus (causes about 85% of plant diseases)

  • General symptoms: Fungi often cause molds, mildews, wilts and leaf spotting. With close observation you can actually see signs of fungal in lesions.

Fungus Diseases


General symptoms: Oomycetes often cause rots, wilts and blights.

Other factors causing disease-like symptom

  • General symptoms: Other factors can cause spots and rots on fruit (Sunscald and Blossom end rot) and fruit deformities

Harvest and Postharvest

Seed Production