plant disease

Definitions of plant disease
1

n a disease that affects plants

Types:
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blight
any plant disease resulting in withering without rotting
leaf disease
any plant disease localized in the foliage
rust
a plant disease that produces a reddish-brown discoloration of leaves and stems; caused by various rust fungi
blackheart
any of various diseases in which the central tissues blacken
black knot
disease of plum and cherry trees characterized by black excrescences on the branches
black rot
a fungous disease causing darkening and decay of the leaves of fruits and vegetables
black spot
any of several fungous diseases of plants that produce small black spots on the plant
bottom rot
fungous disease of lettuce that first rots lower leaves and spreads upward
brown rot
any of certain fungous diseases of plants characterized by browning and decay of tissues
gummosis
pathological production of gummy exudates in citrus and various stone-fruit trees
canker
a fungal disease of woody plants that causes localized damage to the bark
cotton ball
a fungus disease of cranberries
crown gall
a bacterial disease of plants (especially pome and stone fruits and grapes and roses) which forms excrescences on the stem near the ground
crown wart
a fungous disease of alfalfa which forms white excrescences at the base of the stem
damping off
a plant disease caused by a fungus; diseased condition of seedlings in excessive moisture
dieback
a disease of plants characterized by the gradual dying of the young shoots starting at the tips and progressing to the larger branches
dry rot
a crumbling and drying of timber or bulbs or potatoes or fruit caused by a fungus
heartrot
any plant disease in which the central part of a plant rots (especially in trees)
mosaic
viral disease in solanaceous plants (tomatoes, potatoes, tobacco) resulting in mottling and often shriveling of the leaves
rhizoctinia disease
disease caused by rhizoctinia or fungi of Pellicularia and Corticium
pink disease
serious bark disease of many tropical crop trees (coffee, citrus, rubber); branches have a covering of pink hyphae
potato wart
fungous disease causing dark warty spongy excrescences in the eyes of potato tubers
root rot
disease characterized by root decay; caused by various fungi
scorch
a plant disease that produces a browning or scorched appearance of plant tissues
sweet-potato ring rot
disease of sweet potatoes in which roots are girdled by rings of dry rot
sclerotium disease, sclerotium rot
plant disease cause by fungi of the genus Sclerotium; also one in which sclerotia are formed
Dutch elm disease
disease of elms caused by a fungus
ergot
a plant disease caused by the ergot fungus
foot rot
plant disease in which the stem or trunk rots at the base
pinkroot
a fungal disease of onions
wilt, wilt disease
any plant disease characterized by drooping and shriveling; usually caused by parasites attacking the roots
smut
destructive diseases of plants (especially cereal grasses) caused by fungi that produce black powdery masses of spores
soft rot
mushy or slimy decay of plants caused by bacteria or fungi
yellow dwarf
any of several virus diseases of plants characterized by stunting and yellowing of the leaves
yellow spot
any of several fungous or viral diseases characterized by yellow spotting on the leaves
alder blight
a disease of alders caused by the woolly alder aphid (a plant louse)
apple blight, apple canker
a disease of apple trees
beet blight
a disease of beet plants
blister blight
a disease of tea plants
blister blight
a disease of Scotch pines
cane blight
a disease affecting the canes of various bush fruits (e.g., raspberries or currants)
chestnut blight, chestnut canker, chestnut-bark disease
a disease of American chestnut trees
coffee blight
a blight affecting the coffee plant
collar blight
a disease affecting the trunks of pear and apple trees
bean blight, halo blight, halo spot
a blight of bean plants
halo blight
a blight affecting the leaves of oats and other grasses
head blight
a blight of the heads of cereals
late blight
blight in which symptoms appear late in the growing season especially a disease of solanaceous plants caused by the fungus Phytophthora infestans
leaf blight
any blight causing a browning and falling of the leaves of a plant
peach blight
a disease of trees bearing drupes
potato blight, potato disease, potato mildew, potato mold, potato murrain
a blight of potatoes
rim blight
a disease of tea plants
spinach blight
a disease of spinach plants
spur blight
a disease of raspberries
stem blight
a fungous blight attacking the stems of plants
stripe blight
a disease of oats
thread blight
a disease of tropical woody plants (cacao or tea or citrus)
tomato blight, tomato yellows
a disease of tomato plants
twig blight
a disease of the ends of twigs of woody plants
walnut blight
a disease of English walnut trees
blister rust, white pine blister rust, white-pine rust
any of several diseases of pines caused by rust fungi of the genus Cronartium and marked by destructive invasion of bark and sapwood and producing blisters externally
brown rot gummosis, gummosis
disease of citrus trees caused by the fungus Phytophthora citrophthora
ring disease, ring rot, tobacco wilt
disease of tomatoes and potatoes and tobacco etc caused by the bacterium Pseudomonas solanacearum
hairy root
a phase of crown gall (especially in apples) during which there is abnormal development of fine fibrous roots
potato mosaic
a disease of the leaves of potato plants
tobacco mosaic
a plant disease causing discoloration of the leaves of tobacco plants
tomato streak
disease of a wide range of plants (tomatoes, potatoes, peas) resulting from a mixed infection of potato and tomato mosaic
little potato, rosette, russet scab, stem canker
rhizoctinia disease of potatoes
leaf scorch
plant disease causing a burned or scorched appearance of the foliage
granville wilt
a bacterial wilt of tobacco plants
fusarium wilt
wilt caused by fungi of the genus Fusarium
verticilliosis
wilt caused by fungi of the genus Verticillium
loose smut
disease of grains; the entire head is a dusty mass of spores
bunt, stinking smut
disease of wheat characterized by replacement of the grains with greasy masses of smelly smut spores
flag smut
smut affecting leaves and stems of cereals and other grasses
false smut, green smut
disease of rice; grains covered by a green powder consisting of conidia
leak
soft watery rot in fruits and vegetables caused by fungi
potato yellow dwarf, yellow dwarf of potato
the yellow dwarf disease of potato plants
onion yellow dwarf
the yellow dwarf disease of onion plants
Type of:
disease
an impairment of health or a condition of abnormal functioning

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