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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.
All dimensions of the symbol and the leaf silhouette (a novel design by David and Eli Nathan) are defined in ASTM D8441/D8441M. The state of Vermont approved use of the IICPS before the ASTM standard was published, and their choice of a different color scheme is now out of compliance with the ASTM D8441/D8441M standard.
The parallel leaf veins arise from the midrib (not typical of monocots). The leaves are broad, green or violet green, with elliptical sheets, which can measure 30 to 60 cm long and 10 to 25 cm wide, with the base obtuse or narrowly cuneate and the apex is shortly acuminate or sharp. The surface of the rhizome is carved by transverse grooves ...
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]
But there’s a continuing problem when it comes to banks: Many financial institutions don’t want anything to do with money from the cannabis industry for fear it could expose them to legal ...
In the 1960s and 70s various studies showed that the D–L test was not specific to cannabis, although some flawed studies claimed to show the opposite. A 1969 UK government scientist [ 2 ] reported twenty-five plant substances giving a D–L test result very similar to that of cannabis and warned that the D–L test "should never be relied ...
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