Download or read book Studies on Migration and Control of the Six spotted Leafhopper Macrosteles Fascifrons St l in Relation to Transmission of Aster yellows Virus written by L. N. Chiykowski and published by . This book was released on 1958 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Some Studies on the Aster yellows Virus and Transmission by the Six spotted Leafhopper Macrosteles Fascifrons St l written by Peter Elliot Lee and published by . This book was released on 1961 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Host Plants of the Six spotted Leafhopper and the Aster Yellows Virus and Other Vectors of the Virus written by Robert L. Wallis and published by . This book was released on 1960 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Migration of the Six spotted Leafhopper Macrosteles Fascifrons St l written by and published by . This book was released on 1965 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Feeding Habits of the Six spotted Leafhopper Macrosteles Divisus Uhl in Relation to Transmission of the Aster yellows Virus written by Arthur Andrew Whipp and published by . This book was released on 1951 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Strains of Aster yellows Virus and Their Transmission by the Six spotted Leafhopper Macrosteles Fascifrons Stal written by Robert Romero Granados and published by . This book was released on 1965 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Strains of Aster yellows Virus and Their Transmission by the Six spotted Leafhopper Macrosteles Fascifrons Stal written by Robert R. Granados and published by . This book was released on 1965 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Some Vector Virus Host plant Relationships of the Six spotted Leafhopper Macrosteles Fascifrons Stal and Aster Yellows Virus in Manitoba written by Howard Percival Richardson and published by . This book was released on 1966 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contact and systemic insecticides formulated as emulsive concentrates (EC), wettable powders (WP), and granules (G) were compared at various times, rates and intervals of application to control the six-spotted leafhopper, Macrosteles fascifrons (Stal), and prevent the spread of aster yellows virus (AYV) to head lettuce and carrots. The insecticides malathion EC, Baygon EC and G and phorate G, at the rate of one pound per acre controlled the six-spotted leafhopper and prevented the spread of AYV to the head lettuce in the spring and summer crops of 1960, 1961 and 1962. The same insecticides gave only partial protection to the spring crop and failed to protect the summer crop of 1963 because of a combination of a large population of M. fascifrons with a high percentage (ten per cent) of infective leafhoppers. Other insecticides tested against M. fascifrons on head lettuce were less effective ... Three strains of AYV, "A", "B", and "C", were isolated from lettuce, zinnia and celery, respectively, in Manitoba ... The transmission of the three strains of AYV by single infective M. fascifrons showed that the six-spotted leafhopper, male or female, is a consistent and reliable transmitter after a two-day inoculation feed; that aster is a poor indicator of the proportion of infective leafhoppers; that stinkweed and head lettuce are superior indicator plants; and that different species of host plants vary in their susceptibility to different strains. The acquisition of the three strains of AYV by M. fascifrons from 14 different host plants showed that it depended on the strain of AYV and the host plant.

Download or read book Some Factors Affecting the Transmission of Aster yellows Virus by the Six spotted Leafhopper Macrosteles Divisus Uhl written by Robert Keith Chapman and published by . This book was released on 1949 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies Pertaining to the Six spotted Leafhopper in Relation to Transmission of Lettuce yellows Virus in New York written by Leith Stanley Thompson and published by . This book was released on 1961 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of the Six spotted Leafhopper Macrosteles Fascifrons Stal a Vector of Lettuce Yellows Virus written by Rudolph Greer Strong and published by . This book was released on 1956 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Host Plants of the Six spotted Leafhopper and the Aster Yellows Virus and Other Vectors of the Virus written by Robert L. Wallis and published by . This book was released on 1960 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Epidemiology of the Aster Leafhopper and Aster Yellows in Relation to Disease Control written by Gerald Alvin Schultz and published by . This book was released on 1979 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Host Plants of the Six Spotted Leafhopper and the Aster Yellows Virus and Other Vectors of the Virus March 1960 Classic Reprint written by Robert L. Wallis and published by Forgotten Books. This book was released on 2018-01-09 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Host Plants of the Six-Spotted Leafhopper and the Aster Yellows Virus and Other Vectors of the Virus: March 1960 The literature also shows that, although the six-spotted leafhopper appears to be the only vector of the eastern strain of the aster yellows virus, there are a number of other vectors of the western (california or celery yellows) strain of the virus. A list of the vectors of the western strain is also presented. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Boyce Thompson Institute Collected Research Papers written by and published by . This book was released on 1923 with total page 1308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dual Transmission of and Interference Between the Aster Yellows Mycoplasmalike Organism and the Oat Blue Dwarf Viros in the Aster Leafhopper Macrosteles Fascifrons St l written by Therese Atcham and published by . This book was released on 1986 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Aphid Transmission and Field Spread of Potato Virus Y in Wisconsin written by Allison Bennett Stevenson and published by . This book was released on 1959 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: