Search results
Results from the WOW.Com Content Network
Fungal diseases; Alternaria leaf spot Alternaria sonchi. Anthracnose Microdochium panattonianum = Marssonina panattoniana. Bottom rot Rhizoctonia solani Thanatephorus cucumeris [teleomorph] Cercospora leaf spot Cercospora longissima. Damping-off, Pythium Pythium spp. Pythium ultimum. Damping-off, Rhizoctonia Rhizoctonia solani. Downy mildew ...
Leaf spots are a type of plant disease that are usually caused by pathogens and sometimes other cases such as herbicide injuries. [3] Leaf spots can vary in size, shape, and color depending on the age and type of the cause or pathogen.
Albugo is a genus of plant-parasitic oomycetes.Those are not true fungi (), although many discussions of this organism still treat it as a fungus.The taxonomy of this genus is incomplete, but several species are plant pathogens.
Leptosphaeria maculans causes phoma stem canker or blackleg. Symptoms generally include basal stem cankers, small grey oval lesions on the leaf tissue and root rot (as the fungus can directly penetrate roots). [3] L. maculans infects a wide variety of Brassica crops including cabbage (Brassica oleracea) and oilseed rape (Brassica napus).
Alternaria leaf spot or Alternaria leaf blight are a group of fungal diseases in plants, that have a variety of hosts. [ 1 ] [ 2 ] [ 3 ] The diseases infects common garden plants, such as cabbage, and are caused by several closely related species of fungi. [ 4 ]
In 2007, the cabbage crop in the US exceed $413M (1.4M+ tons). [18] Black rot is considered the most important disease of cabbage and other crucifers because Xcc infections may not become apparent until the warm summer months (well after planting), the pathogen spreads rapidly, and losses due to the disease may exceed 50% in warm, wet climates. [6]
Plant diseases are diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). [1] Organisms that cause infectious disease include fungi , oomycetes , bacteria , viruses , viroids , virus -like organisms, phytoplasmas , protozoa , nematodes and parasitic plants . [ 2 ]
Epidemiology is the study of factors affecting the outbreak and spread of infectious diseases. [10] A disease triangle describes the basic factors required for plant diseases. These are the host plant, the pathogen, and the environment. Any one of these can be modified to control a disease. [11]