plant disease

/plænt dəˌziz/

Other forms: plant diseases

Definitions of plant disease

1. noun

   a disease that affects plants
   types:

   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