1 edition of Curly top symptoms on the sugar beet found in the catalog.
|Statement||Henry H.P. Severin|
|Series||Bulletin -- no. 465, Bulletin (California Agricultural Experiment Station) -- 465.|
|The Physical Object|
|Pagination||35 p. :|
|Number of Pages||35|
Curly Top is a virus disease caused by Beet Curly Top Virus (BCTV). The virus is presumably indigenous to the Mediterranean basin, and was introduced into North America before the start of the 20th century. As do most viruses, BCTV has a vector that moves it from plant to plant. The beet leafhopper is the vector for BCTV in North America. Curly Top Disease • Disease of vegetable and field crops (beans, peppers, sugar beet and tomato) • Introduced into the Western United States in the early ’s • Historically caused losses to sugar beet production in western states • Became less of a problem with the development of resistant varieties.
Schneider CL, Incidence of curly top in sugar beet in Minnesota and Iowa in Plant Disease Reporter, Schneider CL, Occurrence of curly top in sugar beet in Maryland in Plant Disease Reporter, Schneider CL; Hogaboam GJ, New occurrences of powdery mildew and curly top on sugarbeet in Michigan in show cupping symptoms and petioles will curl downward giving the curly top symptomology. the wild weed hosts dry up in the spring or early summer the BLH will move into the valleys and begin feeding on spring crops. Sugar beet is a common host and may serve as a virus reservoir.
Alternative Title: beet curly top virus disease Curly top, also called beet curly top virus, viral disease affecting numerous cultivated and wild plants worldwide. Diseased plants are usually stunted or dwarfed and have thickened, yellowed, and bunched or curled leaves that frequently die early. Curly top is characterized by stunting of the plant and deformation of leaves and fruit. The petioles and blades of the leaves curl, twist, and become discolored. Beet curly top virus causes curly top disease in beets and is carried by the beet leafhopper (Circulifer tenellus) throughout arid and semi-arid locations.
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Curly-Top, a Disease of the Sugar Beet (Classic Reprint) [C. Townsend] on *FREE* shipping on qualifying offers. Excerpt from Curly-Top, a Disease of the Sugar Beet Alkali and Drought Resistant Plant Breeding Investigations.
Excerpt from Curly-Top, a Disease of the Sugar Beet Alkali and Drought Resistant Plant Breeding Investigations, Thomas ii. Kearney, Physi ologist in Charge. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books.
Find more at This book is a reproduction of an important historical by: 4. Curly top symptoms on the sugar beet.
Berkeley, Cal.: Agricultural Experiment Station, (OCoLC) Material Type: Document, Government publication, State or province government publication, Internet resource: Document Type: Internet Resource, Computer File: All Authors / Contributors: Henry H P Severin.
Books. An illustration of two cells of a film strip. Video. An illustration of an audio speaker. Audio. An illustration of a " floppy disk. Software An illustration of two photographs. Curly top symptoms on the sugar beet Item Preview remove-circle Share or Embed This : Fig. Curly top symptoms on sugar beet exhibiting upward and inward leaf curling.
(Photo by R. Harveson) Fig. Curly top symptoms on sugar beet: enations on underside of leaves. In order to identify novel sources of curly top resistance, 30 sugar beet USDA-ARS Plant Introduction (PI) lines were screened in a disease nursery in The lines were arranged in a randomized complete block design with four replications.
A curly top epiphytotic was created by releasing six viruliferous beet leafhoppers per plant at the four- to six-leaf growth stage on 14 June. Foliar symptoms. No symptoms were produced by the yellow-vein virus on sugar beet but the virus was recovered from inoculated plants. The presence of the yellow-vein virus apparently results in a marked decrease in the curly top component in tobacco.
Concentrations of the two components appear to. Damage from curly top virus includes yellow, inwardly. curled leaves and stunted growth.
(Imad Eujayl, D) The sugar beet curly top virus could meet its match in new sugar beet varieties derived from KDH13, a germplasm breeding line developed by Agricultural Research Service (ARS) researchers for resistance to the disease-causing pathogen.
Beets, tomatoes, peppers, beans, potatoes, spinach, cucurbits, many ornamentals, and weeds such as Russian thistle (tumbleweed) and mustard. Symptoms. Leaf and fruit deformation; Stunting; Leaves turn yellow with purple veins.
Leaves twist and curl upward. Leaves become thickened, stiff, and crisp. Petioles curl downward. Premature fruit ripening. There are several symptoms that may indicate curly top: The leaves of the infected plants, especially tomatoes and peppers, twist and curl upwards.
The petioles (the stalk that is attached to the stem and is supporting the leaf) may bend downwards. The leaves turn yellow with purplish veins.
Curly top is caused by Beet curly top virus (BCTV) • A geminivirus with a very wide host range (> species of plants) including. crops and weeds • Some plants show severe symptoms when infected (e.g., tomatoes), whereas. others show no symptoms (many species of.
Leaves on beets that are dwarfed, crinkled and rolled are a sign of beet curly top disease. Certainly, the presence of curly top symptoms are slightly ominous, and it can kill the beets, but the real threat is that curly top virus on beets can be easily spread to other crops.
Curly top virus is widely distributed in Texas. It is most noted for destruction of tomatoes, peppers, and sugar beets, but watermelon, beans, spinach, and squash are also susceptible as well as many weeds and ornamentals. Symptom expression changes from barely noticeable stunting and leaf puckering to death of the entire plant.
Curly top in sugar beet is a serious problem that is caused by Beet curly top virus and other closely related species and transmitted by the beet leafhopper. In order to find a means of reducing curly top in sugar beet, 15 combinations of insecticide seed (Poncho, Poncho Beta, and Poncho Votivo) and foliar (Asana, Cyazypyr, Lorsban, Mustang, Scorpion, and Sivanto) treatments were evaluated.
known carrier of curly top, a destruc- tive virus disease of sugar beets, beets, beans, tomatoes, spinach, melons, other crops, ornamental flowering plants and many weeds. The insect favors arid and semiarid localities of the western United States, northern Mexico, and southwestern Canada.
Its breeding grounds are ned and overgrazed. Curly top caused by Curtovirus species is a widespread disease problem vectored by the beet leafhopper in semiarid sugar beet production areas. The insecticide seed treatment Poncho Beta has proven to be effective in controlling curly top in sugar beet, but was only evaluated under light to moderate disease pressure.
Thus, the insecticide seed treatments Poncho Beta, NipsIt INSIDE, and. The beet curly top virus (BCTV) is transmitted by the beet leafhopper Circulifer tenellus Baker that attacks sugar beet throughout the arid areas in W estern USA, Southwestern Canada, Mexico. Other Diseases: Curly-top virus is a serious problem on sugar beet.
(See separate section on curly-top. Nematodes cause serious losses in other beet production areas. Nematode control is also discussed separately.
Phoma Leaf Spot (fungus – Phoma betae): This fungus is common in early season and where sugar beets are grown, occuring mainly on.
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Sugar beet varieties show different degree of susceptibility to Beet curly top disease. The beet leafhopper, vector of beet curly top geminivirus. left: healthy beet leave, right: beet leave showing symptoms of curly top.
Beet curly top virus (BCTV) is a pathogenic plant virus of the family Geminiviridae, containing a single-stranded DNA.
The family Geminiviridae consists of nine genera (Becurtovirus, Begomovirus, Capulavirus, Curtovirus, Eragrovirus, Grablovirus, Mastrevirus, Topocuvirus, Turncurtovirus) based on their host range, virus genome structure, and type of insect vector.Beet curly top virus also can cause significant losses in tomatoes, beans, peppers, and occasionally cucurbits.
MANAGEMENT. Curly top is not generally a problem in the Imperial Valley. In other areas, grow resistant varieties in virus-prone areas, especially along the west side of the San Joaquin Valley.Members of the family Geminiviridae are divided into the genera Begomovirus, Curtovirus, Topocuvirus, and Mastrevirus on the basis of genome organization, host range, and insect vector characteristics.
Originally collectively referred to as strains of Beet curly top virus, the genus Curtovirus currently includes BCTV as the type species and Beet mild curly top virus, Beet severe curly top.