Monitor the nursery during the last month before digging
for pest problems that may be introduced to fruit-production
fields on contaminated transplants. Names link to more information
on identification and management.
Click on photos to enlarge
Twospotted spider mite damage
Identification
tip: Yellow stippling and discoloration of
foliage. Infestations usually not heavy enough to cause visible
symptoms.
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Twospotted spider mite adult and immatures
Identification
tip: Moving dots on the undersides of leaflets.
With hand lens: yellowish, pale green, or orange; dark blotch
on each side; two red eyespots on head; eggs spherical.
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Carmine spider mite adult
Identification
tip: Similar to twospotted spider mite in
size and shape, but deep red; dark blotch on each side.
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Cyclamen mite damage
Identification tip: Stunting and distortion of new leaves;
compact mass of crinkled leaves in center of plant.
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Cyclamen mite adults and eggs
Identification tip: Invisible to naked eye. With 20X hand
lens: teardrop shaped; tiny legs toward one end; eggs oblong.
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Anthracnose runner lesions
Identification
tip: Sunken, dark brown lesions on stems,
runners, leaf petioles.
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Anthracnose damaged plant
Identification tip: Wilted, collapsed plants.
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Anthracnose crown discoloration
Identification tip: Red-brown discoloration in crown tissue
of wilted plants.
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Angular leaf spot lesions
Identification
tip: Watersoaked lesions on underside of leaf,
delimited by leaf veins; dark, viscous fluid on surface of
lesions.
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Angular leaf spot coalesced lesions
Identification tip: Reddish brown spots and patches on upper
leaf surface.
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Botrytis blossom blast
Identification tip: Brown, withered blossoms; gray tufts
of pathogen spores.
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Botrytis
early fruit lesion
Identification tip: Light brown
spots or patches on fruit, often near calyx.
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Botrytis sporulation (gray mold)
Identification tip: Velvety gray pathogen spores on surface
of rotting fruit.
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Powdery mildew damage
Identification tip: Leaf edges curled upward; purple discoloration
of leaf margins.
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Powdery mildew sporulation
Identification tip: Powdery white patches on underside
of leaves.
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