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Puccinia thaliae is the causal agent of canna rust, a fungal disease of Canna. Symptoms include yellow to tan spots on the plant's leaves and stems. Initial disease symptoms will result in scattered sori (clustered sporangia), eventually covering the entirety of the leaf with coalescing postulates.
Plants affected by hop latent viroid may display stunted growth, brittle stems, and reduced foliage; symptoms result from RNA of the viroid disrupting the plant metabolites. These symptoms are reflected in the plant's foliage as trichome development becomes uneven and leaves develop chlorosis. Unfortunately, there are no signs to pre-diagnose ...
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]
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.
Many people try marijuana, and some develop an addiction leading to their lives — and the lives of others — being turned upside down, Dr. Mark Hurst writes. 'Marijuana is, in fact, a problem.'
The reagent can be prepared by adding 2 grams of vanillin and 2.5 milliliters of acetaldehyde to 100 milliliters of ethanol. [6]The test is performed by placing approximately 10 to 20 milligrams of a target substance in a glass test tube, then 10 drops of the Duquenois reagent.
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Phytoplasmas are pathogens of agriculturally important plants, including coconut, sugarcane, sandalwood, and cannabis, as well as horticultural crops like sweet cherry, peaches, and nectarines. They cause a wide variety of symptoms ranging from mild yellowing, small fruit, and reduced sugar content to death.