Results 191 to 200 of about 5,948 (248)

An appraisal of different methods for the detection of the walnut strain of cherry leafroll virus

open access: yesJournal of Virological Methods, 1992
Three methods were evaluated for the detection of cherry leafroll virus ELISA, dot-blot and reverse transcriptional polymerase chain reaction (RT-PCR). Dot-blot and RT-PCR were carried out in crude plant extracts without any further RNA purification. Dot-
Fernando Ponz
exaly   +2 more sources

Natural host range, incidence on overwintering cotton and diversity of cotton leafroll dwarf virus in Georgia USA

, 2021
In 2018-19, cotton leafroll dwarf virus (CLRDV) was reported from several cotton-producing states in the southern United States. An extensive survey was conducted in the spring, summer, and fall of 2019 to identify weeds and overwintering cotton as ...
Nabin P. Sedhain   +7 more
semanticscholar   +1 more source

Thermotherapy of potato leafroll

American Potato Journal, 1962
Heat treatment at 35 C for 56 days or at 36 C for 39 days completely eliminated leafroll virus from tubers of several potato varieties. Tuber size had little effect on ability to survive the treatment or on the time required for the elimination of leafroll. Tuber losses after heat treatment range from slight to as high as 50%. Heat treatment materially
K. H. Fernow   +2 more
openaire   +1 more source

Purification and characterization of potato leafroll virus

Virology, 1979
Potato leafroll virus (PLRV) was purified from infected potato (Solanum tuberosum L.) with yields of 0.4-0.6 mg/kg of foliage. The virus sedimented as a single component of 127 S. An antiserum prepared against purified virus had a maximum titer of 1:1024 in agar gel double diffusion tests.
A, Rowhani, R, Stace-Smith
openaire   +2 more sources

Mosaic versus leafroll

American Potato Journal, 1926
I t has become increas ingly evident tha t the to ta l percentage of degenera t ive diseases in a s train of po ta toes is not an accurate measure of the value of the strain for seed. Th i s is especially evident when the amoun t of diseases is quite large, tha t is, more than is usual ly found in certified stock.
openaire   +1 more source

Apple, Leafroller Control, 1978

Insecticide and Acaricide Tests, 1979
Abstract Treatments were applied to single-tree plots replicated 5 times using Jonathan, York, Rome, Stayman, and Winesap. These 14-yr-old trees were sprayed to runoff using a Bean high pressure sprayer operating at 600 psi. Cover sprays of Zolone 1 qt (100 gal/acre cone.) were applied at 7-to 10-da intervals on alternate sides from Jun ...
John H. Thomas   +2 more
openaire   +1 more source

Apple, Leafroller Control, 1975

Insecticide and Acaricide Tests, 1976
Abstract Insecticide treatments applied as full-season, dilute sprays were evaluated in a block of 10-11 year-old trees for leafroller control. The entire block was sprayed with Dikar 6 lb/A + Systox 6E 10 oz/A on April 10, April 17, April 23; Captan 50W 6 lb/A on April 30; Agri-Strep 1.5 lb/A on May 5; Dikar 6 lb/A + Agri-Strep 1.5 lb/A
openaire   +2 more sources

Testing for mild leafroll in Maine

American Potato Journal, 1977
Field and greenhouse readings in Maine together with test plot readings in Florida showed the incidence of potato leafroll virus infection in 10 Kennebec seed lots from south, central and northern Aroostook County to be about 1.2%. When the seed lots were indexed by aphid transmission of the virus toPhysalis floridana Rydb.
F. E. Manzer   +2 more
openaire   +1 more source

Leafroll control by use of insecticides

American Potato Journal, 1953
In 1951 and 1952, tests were conducted near Ithaca, New York, on the effect of insecticidal applications on the amount and pattern of spread of potato leafroll virus from known sources of inoculum. Systox was very effective in reducing disease incidence, parathion reduced virus spread almost as well, and DDT appeared most helpful where the amount of ...
K. H. Fernow, S. H. Kerr
openaire   +1 more source

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