Search results
Results From The WOW.Com Content Network
Botrytis squamosa (teleomorph: Botryotinia squamosa) is a fungus that causes leaf blight on onion (often termed ‘blast’) that is distinctly characterized by the two stages – leaf spotting followed by blighting. [1] The pathogen is an ascomycete that belongs to the family Sclerotiniaceae in the order Helotiales. [2]
The Botrytis Leaf Blight pathogen survives the winter much like White Rot does, as sclerotia (a small mass of fungi capable of thriving in hostile conditions). [15] Such sclerotia is responsible for spreading the pathogen and infecting crops as it has been observed to infect leaves and bulbs of sprouted crops.
Botrytis is a genus of anamorphic fungi in the family Sclerotiniaceae. Botrytis (also known as grey mold) belongs to the group hyphomycetes and has about 30 different species. It is a plant parasite as well as saprophytes on both agricultural and forest trees.
Compared to 23 common soybean diseases, sclerotinia stem rot was the second most problematic disease in the United States from 1996 to 2009. [ 8 ] [ 9 ] For soybeans, crop yields are inversely correlated with the incidence of Sclerotinia stem rot; an estimated of 0.25 metric ton per ha is lost for each 10% increment of diseased plants.
There are seven different species of Botrytis associated with onions in storage, but the rot induced by B. allii and B. aclada causes the greatest commercial loss. The two can be distinguished microscopically; the conidia of B. allii have a maximum length of 15 μm and mean size of 10.2 × 5.7 μm, while the conidia of B. aclada have a maximum length of 12 μm and mean size of 8.6 × 4.6 μm.
Leaf blight of the grasses e.g. Ascochyta species [5] and Alternaria triticina that causes blight in wheat [6] Bur oak blight , caused by the fungal pathogen Tubakia iowensis . South American leaf blight, caused by the ascomycete Pseudocercospora ulei , [ 7 ] [ 8 ] [ 9 ] also called Microcyclus ulei , [ 10 ] ended the cultivation of the rubber ...
Rhizoctonia solani root rot on corn roots, magnified 0.63X. Damping off can be prevented or controlled in several different ways. Sowing seeds in a sterilized growing medium can be effective, although fungal spores may still be introduced to the medium, either on the seeds themselves or after sowing (in water or on the wind).
There are a variety of hosts including but not limited to; banana, beans, cabbage, carrot, cassava, coffee, corn, cotton, onion, other crucifers, pepper, potato, sweet potato and tomato. Pandanus conoideus and karuka (Pandanus julianettii) get bacterial soft rot and necrosis on the leaves from Pectobacterium carotovorum subsp. carotovorum. [1]