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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.
Melanospora cannabis (secondary on hemp canker) Rhizoctonia soreshin and root rot Rhizoctonia solani: Rust Aecidium cannabis Uredo kriegeriana Uromyces inconspicuus. Southern blight. Sclerotium root and stem rot Sclerotium rolfsii Athelia rolfsii [teleomorph] Stemphylium leaf and stem spot Stemphylium botryosum Pleospora tarda [teleomorph]
Leaf spots can vary in size, shape, and color depending on the age and type of the cause or pathogen. Plants, shrubs and trees are weakened by the spots on the leaves as they reduce available foliar space for photosynthesis. Other forms of leaf spot diseases include leaf rust, downy mildew and blights. [4]
THC, the main psychoactive component of cannabis, may only be detectable in saliva and oral fluid for 2–24 hours in most cases. [8] [9] The main metabolite excreted in the urine is 11-Nor-9-carboxy-THC, also known as THC-COOH. Most cannabis drug tests yield a positive result when the concentration of THC-COOH in urine exceeds 50 ng/mL. [10]
It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2]
Cannabis (/ ˈ k æ n ə b ɪ s /) [2] is a genus of flowering plants in the family Cannabaceae that is widely accepted as being indigenous to and originating from the continent of Asia. [3] [4] [5] However, the number of species is disputed, with as many as three species being recognized: Cannabis sativa, C. indica, and C. ruderalis.
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In the 2013 revision for the DSM-5, DSM-IV abuse and dependence were combined into cannabis use disorder. The legal problems criterion (from cannabis abuse) has been removed, and the craving criterion was newly added, resulting in a total of eleven criteria: hazardous use, social/interpersonal problems, neglected major roles, withdrawal ...