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Fungal diseases; Anthracnose Colletotrichum coccodes = Colletotrichum atramentarium = Colletotrichum dematium: Black dot disease Epicoccum nigrum = Epicoccum purpurascens: Black mildew Schiffnerula cannabis: Brown blight Alternaria alternata = Alternaria tenuis: Brown leaf spot and stem canker Ascochyta spp. Ascochyta prasadii Phoma spp ...
Septoria cannabis is a species of plant pathogen from the genus Septoria that causes the disease commonly known as Septoria leaf spot. Early symptoms of infection are concentric white lesions on the vegetative leaves of cannabis plants, followed by chlorosis and necrosis of the leaf until it is ultimately overcome by disease and all living cells are then killed.
Hop latent viroid (abbreviated HpLVd, or HLVd, binomial Cocadviroid latenshumuli) is a viroid, which is known to cause the Dudding Disease in hemp and cannabis. [1] [2] It is a non-capsulated strand of RNA and an obligate parasite that requires the presence of a compatible host for its survivability.
Cannabis also has a long history of being used for medicinal purposes, and as a recreational drug known by several slang terms, such as marijuana, pot or weed. Various cannabis strains have been bred, often selectively to produce high or low levels of tetrahydrocannabinol (THC), a cannabinoid and the plant's principal psychoactive constituent.
Cannabis sativa is an annual herbaceous flowering plant. The species was first classified by Carl Linnaeus in 1753. [ 1 ] The specific epithet sativa means 'cultivated'.
Cannabis has long been used for hemp fibre, hemp seeds and their oils, hemp leaves for use as vegetables and as juice. Industrial hemp products are made from cannabis plants selected to produce an abundance of fibre. Cannabis also has a long history of being used for medicinal purposes, and as a recreational drug known as marijuana or weed.
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]
The name comes from a traditional Thai method of preparing cannabis to be smoked, which involved wrapping cannabis bud around a stick. [90] The stick was either bamboo or a hemp stalk, the bud may have been treated with hash oil before wrapping and would have been wrapped around the stick with fan leaves and/or silk string.