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Fungal diseases; Crown rot Sclerotium rolfsii: Cylindrocarpon root rot Cylindrocarpon destructans: Fusarium root rot Fusarium solani: Gray mold Botrytis cinerea: Leaf spot Alternaria sp. Corynespora cassiicola. Phytophthora root and crown rot Phytophthora nicotianae var. parasitica Phytophthora nicotianae var. nicotianae Phytophthora cryptogea ...
Phytophthora nicotianae has a broad host range comprising 255 genera from 90 families. [4] Hosts include tobacco, onion, tomato, ornamentals, cotton, pepper, and citrus plants. This pathogen can cause root rot, crown rot, fruit rot, leaf infection, and stem infection. Root rot symptoms are observed on tobacco, poinsettia, tomato, pineapple ...
Fungal diseases; Ascochyta leaf spot Ascochyta doronici: Alternaria leaf spot Alternaria alternata Alternaria dauci Alternaria gerberae. Black root rot Thielaviopsis basicola. Botrytis blight Botrytis cinerea. Cercospora leaf spot Cercospora gerberae. Downy mildew Plasmopara majewskii Fusarium crown rot Fusarium solani = Haematonectria haematococca
Sclerotinia sclerotiorum. Sclerotinia sclerotiorum is a plant pathogenic fungus and can cause a disease called white mold if conditions are conducive. S. sclerotiorum can also be known as cottony rot, watery soft rot, stem rot, drop, crown rot and blossom blight. A key characteristic of this pathogen is its ability to produce black resting ...
Host and symptoms. Although Erwinia papayae has been known to survive on leaves of cowpea, tomato, and rockmelon for a minimum of two weeks, the host range of bacterial crown rot is confined to papaya (Webb 1985). Inoculation with the pathogen of twenty-three common weed species and crops found in association with Philippine papaya fields found ...
Violet root rot: hosts and symptoms. The most indicative sign of violet root rot is the presence of dark fungal mats on the affected plant’s roots and stem near the soil line, and the presence of mycelium on the soil. Helicobasidium species are opportunistic parasites of subterranean plant organs.
Black rot, caused by the bacterium Xanthomonas campestris pv. campestris ( Xcc ), is considered the most important and most destructive disease of crucifers, infecting all cultivated varieties of brassicas worldwide. [1] [2] This disease was first described by botanist and entomologist Harrison Garman in Lexington, Kentucky, US in 1889. [3]
Streptocarpus sect. Saintpaulia is a section within Streptocarpus subgenus Streptocarpella [1] consisting of about ten species of herbaceous perennial flowering plants in the family Gesneriaceae, native to Tanzania and adjacent southeastern Kenya in eastern tropical Africa. The section was previously treated as a separate genus, Saintpaulia ...