|
| Disease | Symptoms | Collected sample [9] |
|
| Early blight | Causing large,
sunken areas with concentric rings and a black, velvety appearance |  |
|
| Anthracnose | Symptoms first become visible
on ripe or ripening fruit as small, circular, indented spots
in the skin. As these spots expand, they develop dark
centers or concentric rings of dark specks, which are the
spore-producing bodies of the fungus |  |
|
| Late blight | Infection of green or ripe fruit produces
large, irregularly shaped brown blotches |  |
|
| Bacterial spot | Spots on green fruit first
appear as black, raised, pimple-like dots surrounded by
water-soaked areas. As the spots enlarge to 1/4 to 1/2 inch,
they become gray-brown and scabby with sunken, pitted centers |  |
|
| Bacterial speck | Specks that develop
on young green fruit are slightly raised, 1/32 to 1/16 inch in
diameter, and have well-defined margins |  |
|
| Bacterial canker | White and slightly raised at first, then
raised, dark-colored centers with
white halos 1/16 to 1/8 inch in
diameter. These spots are sometimes termed “bird’s eye” lesions |  |
|
Tomato spotted
wilt virus (TSWV) | TSWV causes distinctive yellow ring spots on mature fruit |  |
|
| Gray mold | This disease is characterized
by a light-gray fuzzy growth that appears on stems and leaves.
Soft rot of the stem end of the fruit can also occur |  |
|
| Blossom end rot | It first appears as a sunken, brownish
black spot 1/2 to 1 inch
in diameter on the
blossom end of the
fruit. These spots may
gradually increase in
size |  |
|
| Fruit cracking | Two types of cracks may develop on tomato fruit.
Radial growth cracks radiate from the stem,
and concentric cracks encircle the fruit, usually on the
shoulders |  |
|
| Cat faced fruit | Cat facing is a term used to describe misshapen fruit
with irregular bulges at the blossom end and bands of
leathery scar tissue |  |
|
| Sunscald | Sunscald occurs on green tomato fruit exposed to the sun.
The initial symptom is a whitish, shiny area that appears
blistered |  |
|
| Blotchy ripening | Absence of
normal red pigment on localized areas of the fruit.
These areas appear as yellow or gray-green patches tomato fruit.
When these
fruits are sliced open, brown discoloration is often apparent |  |
|
| Target spot | Dark brown sunken spots enlarge with cracked centres |  |
|
| Cloudy spot | Yellow to whitish spots of irregular size; white spongy tissue extends into flesh |  |
|
