Spraing
Encyclopedia
Spraing is a disease of potato
tuber
s that causes brown streaks in the flesh of the potato. Spraing can be caused by two viruses, tobacco rattle virus
(TRV) which is transmitted by trichodorid nematodes, or potato mop top virus (PMTV) transmitted by the powdery scab
fungus
Spongospora subterranea.
Control of the disease is generally by ensuring that seed is disease free although the strain transmitted by nematodes can be controlled to some extent by the use of nematicide
s
Potato
The potato is a starchy, tuberous crop from the perennial Solanum tuberosum of the Solanaceae family . The word potato may refer to the plant itself as well as the edible tuber. In the region of the Andes, there are some other closely related cultivated potato species...
tuber
Tuber
Tubers are various types of modified plant structures that are enlarged to store nutrients. They are used by plants to survive the winter or dry months and provide energy and nutrients for regrowth during the next growing season and they are a means of asexual reproduction...
s that causes brown streaks in the flesh of the potato. Spraing can be caused by two viruses, tobacco rattle virus
Tobacco rattle virus
Tobacco rattle virus is a plant pathogenic virus.-External links:**...
(TRV) which is transmitted by trichodorid nematodes, or potato mop top virus (PMTV) transmitted by the powdery scab
Powdery scab
Powdery scab, is a disease that happens to tubers. It is caused by the cercozoan Spongospora subterranea, is widespread in potato growing countries. Symptoms of powdery scab include small lesions in the early stages of the disease, progressing to raised pustules containing a powdery mass. Powdery...
fungus
Fungus
A fungus is a member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds , as well as the more familiar mushrooms. These organisms are classified as a kingdom, Fungi, which is separate from plants, animals, and bacteria...
Spongospora subterranea.
Control of the disease is generally by ensuring that seed is disease free although the strain transmitted by nematodes can be controlled to some extent by the use of nematicide
Nematicide
A nematicide is a type of chemical pesticide used to kill parasitic nematodes.One common nematicide is obtained from neem cake, the residue obtained after cold-pressing the fruit and kernels of the neem tree. Known by several names in the world, the tree was first cultivated in India in ancient...
s