A leaf spot is a limited, discoloured, diseased area of a leaf that is caused by fungal, bacterial or viral plant diseases, or by injuries from nematodes, insects, environmental factors, toxicity or herbicides. These discoloured spots or lesions often have a centre of necrosis (cell death).[1] Symptoms can overlap across causal agents, however differing signs and symptoms of certain pathogens can lead to the diagnosis of the type of leaf spot disease. Prolonged wet and humid conditions promote leaf spot disease and most pathogens are spread by wind, splashing rain or irrigation that carry the disease to other leaves.[2]
A leafspot is a limited, discoloured, diseased area of a leaf that is caused by fungal, bacterial or viral plant diseases, or by injuries from nematodes...
Alternaria leafspot or Alternaria leaf blight are a group of fungal diseases in plants, that have a variety of hosts. The diseases infects common garden...
Cherry leafspot (Blumeriella jaapii) is a fungal disease which infects cherries and plums. Sweet, sour, and ornamental cherries are susceptible to the...
Gray leafspot (GLS) is a foliar fungal disease that affects grasses. In grasses other than maize it is caused by Pyricularia grisea, which only infects...
Drechslera leafspot is a fungal disease of turfgrass caused by several species of Drechslera. The symptoms of Drechslera leafspot are mostly small, dark-brown...
Pseudomonas is a genus of Gram-negative bacteria belonging to the family Pseudomonadaceae in the class Gammaproteobacteria. The 313 members of the genus...
Grey leafspot (GLS) is a foliar fungal disease that affects maize, also known as corn. GLS is considered one of the most significant yield-limiting diseases...
Phomopsis cane and leafspot occurs wherever grapes are grown. Phomopsis cane and leafspot is more severe in grape-growing regions characterized by a...
present in the United States. Symptoms of Alternaria leafspot appear as lesions with tan spots on the leaves. The centers of these lesions become black...
later spring. Withania somnifera is prone to several pests and diseases. Leafspot disease caused by Alternaria alternata is the most prevalent disease,...
Black spotleaf disease is a physiological plant disorder that affects some grape varieties such as Concord. It is essentially a potassium deficiency...
sometimes feed on pansies. Leafspot (Ramularia deflectens) is a fungal infection. Symptoms include dark spots on leaf margins followed by a white web...
Raspberry leafspot is a plant disease caused by Sphaerulina rubi (syn. Cylindrosporium rubi), an ascomycete fungus. Early symptoms of infection are dark...
plant pathogen that infects tea, coffee and coconut plants, causing algal leafspot or algal rust. Cephaleuros virescens is known to have a broad host range...
Bacterial leaf scorch (commonly abbreviated BLS, also called bacterial leafspot) is a disease state affecting many crops, caused mainly by the xylem-plugging...
pathogen, the cause of the disease olive peacock spot, also known as olive leafspot and bird's eye spot. This plant disease commonly affects the leaves...
is the cause of Cercospora leafspot disease in sugar beets, spinach and swiss chard. Of these hosts, Cercospora leafspot is the most economically impactful...
symptoms include blackish-brown spots that often appear as rings on the leaf blade or at the margins of the leaf. The spots continue to grow larger as the...
tulasnei). Symptoms of this disease first appear as circular, dark purple spots on the leaf surface. Mycosphaerella fragariae is very host-specific and only infects...
Thomas C. (1 May 2006). "Species of Cercospora associated with grey leafspot of maize". Studies in Mycology. 55. Westerdijk Institute (Elsevier): 189–197...
grown commercially and these diseases can concern them as well. algal leafspot, red rust (Cephaleuros virescens) These are animals that eat or destroy...
CC BY-SA (license statement/permission). Text taken from PMDG: Brown leafspot of rice - Ghana, E. Moses, S. Akrofi and P. Beseh, CABI. This article...
Mycosphaerella. Most species of this genus cause plant diseases, and form leafspots. It is a relatively well-studied genus of fungi, but there are countless...
can be used to clot milk for cheese production. The plant is prone to leafspot disease caused by Alternaria alternata. "The Plant List: A Working List...
winter/spring-growing annual herb, that resembles a thistle. Originating from a leaf rosette emerges a branched central stem (also referred to as terminal stem)...
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