Download or read book Bacterial Wilt of Cucurbits written by Frederick Vernon Rand and published by . This book was released on 1920 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bacterial Wilt of Cucurbits Classic Reprint written by Frederick V. Rand and published by Forgotten Books. This book was released on 2017-10-28 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Bacterial Wilt of Cucurbits Collections of striped cucumber beetles and 12-spotted cucumber beetles taken at random in the fields have given widely varying results as to wilt transmission according to time of year, prevalence of wilt, amount of territory devoted to cucurbits, and length of time the beetles had fed since attaining the adult stage. In eastern Long Island from the first collections of early spring only an occasional striped beetle has proved to be a wilt carrier. Later in the season some collections have shown a large percentage capable of spreading the disease. For example, on September 1, 1916, striped beetles were collected, at random in a cucurbit field and several put into each of four beetle-proof cages containing healthy cucumber plants. Many of the vines in each of the cages contracted bacterial wilt, so that at least one of the beetles introduced into each cage must have been a wilt carrier. About two weeks previously six beetles collected in the same locality failed to give infection. In this locality late cucumbers constitute one of the main crops. However, in the trucking sections around the District of Columbia late cucurbits are rather the exception, most of these crops being planted there in early spring. In that locality random collections from the field have given a much smaller percentage of infection. During the summer of 1917, at Tuxedo, Md., from five to seven large insect cages were kept constantly as storage cages for both species of cucumber beetles. Healthy plants grown in the cages and healthy potted cucumber plants brought frequently from the greenhouses at Washington, D. C., were kept in the cages as food for the beetles. Collections of beetles made at frequent intervals from fields where wilt was present were placed in these cages, but throughout the season only two cases of wilt occurred in these cages. In many instances the beetles were taken directly from wilting vines. 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 Bacterial Wilt of Cucurbits written by James R. Venette and published by . This book was released on 1989 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bacterial Wilt of Cucurbits written by United States. Department of Agriculture and published by . This book was released on 1921 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bacterial Wilt of Cucurbits written by Elaine Walker and published by . This book was released on 1981 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Bacterial Wilt of Cucumber written by Charles E. Main and published by . This book was released on 1964 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissemination of Bacterial Wilt of Cucurbits written by and published by . This book was released on 1915 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Biological Control Program for Bacterial Wilt Disease of Cucurbits written by Changbin Yao and published by . This book was released on 1995 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cucumber and Other Cucurbit Species Disorder written by Mary Francis Heimann and published by . This book was released on 1984* with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transmissions and Control of Bacterial Wilt of Cucurbits written by and published by . This book was released on 1916 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transmission and Control of Bacterial Wilt of Cucurbits written by Frederick Vernon Rand and published by . This book was released on 1916 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cucumis Species Resistance to Striped Cucumber Beetle Seedling Feeding and Bacterial Wilt written by B. D. Barry and published by . This book was released on 1976 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Real time Imaging and Characterization of Colonization of Cucurbit Hosts by Erwinia Tracheiphila the Impact of Intra specific Competition and the Discovery and Characterization of Novel Approaches to Manage Bacterial Wilt of Cucurbits written by Claudio M. Vrisman and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacterial wilt of cucurbits is caused by the bacterium Erwinia tracheiphila (Et) and is considered one of the most destructive diseases of cucurbits in the Midwestern and Northeastern US, causing losses of up to 80%. Recent and early studies demonstrated a preference among Et strains to colonize hosts in the genus from which they were isolated. Non-productive (asymptomatic) colonization of non-preferred squash plants, and root colonization of both preferred and non-preferred hosts was demonstrated for the first time using a bioluminescent Et strain. Asymptomatic but colonized plants could serve as sources of inoculum in the field. Additionally, cucumber beetle larvae could acquire and transmit Et when feeding on roots, a phenomenon not previously considered in the epidemiology of this disease. Et is a pathogen undergoing relatively recent genomic changes, including a variable number of type VI secretion system (T6SS) gene clusters among Et strains. In single inoculations, BHKY, but not TedCu10 and MDCuke, was pathogenic to squash. Plants inoculated with either TedCu10 or MDCuke at 108 colony forming units (CFU)/ml followed immediately afterward by BHKY at 108 CFU/ml in the same sites remained asymptomatic. Single deletion mutants of the three T6SS loci in rifampicin-resistant MDCuke were generated via bi-parental mating. In vitro growth of MDCuke-Rif¿T6SS-2 was slightly higher than that of the wild type strain. The motility of MDCuke-Rif¿T6SS-1 on soft agar was significantly higher than that of the wild type strain. Single deletions did not affect the pathogenicity of MDCuke on melon plants or mediate the apparent competition between the preferred BHKY and non-preferred MDCuke strains in squash. Additional studies, including the generation and testing of double and triple deletion mutants of MDCuke T6SS loci and assessment of population size effects in intra-specific interactions are needed to unravel the mechanisms leading to the disease suppression phenotype observed. Currently, insecticides applied to the seeds or transplants to manage cucumber beetle vectors are the main approach to manage bacterial wilt. Another management approach is perimeter trap cropping. Beetle density was significantly higher in the squash trap crop than in the muskmelon main crop in nearly half of the sampling periods in 2015. Although no significant differences were observed in bacterial wilt incidence, trends indicated reduced disease in muskmelon grown within a squash perimeter trap crop than in those grown without a trap crop. Conventional bactericides are insufficient and ineffective to combat bacterial infections of plants. Novel compounds with potency to inhibit bacterial growth are needed for management of bacterial diseases in various crops. In a high-throughput screening assay, 20 small molecules (SMs) were cidal to multiple strains of this pathogen. These SMs showed minimal toxicity to honey bees, human cells, and beneficial bacteria. Nineteen of the 20 SMs were cidal to Xanthomonas cucurbitae and inhibited more than 50% growth of Pseudomonas syringae pv. lachrymans. In addition, 19 SMs were cidal or static against E. amylovora in vitro. Some of these SMs showed promising results for controlling Et in melon plants when applied to cotyledons or delivered to the roots.
Download or read book Cucurbit Responses to Erwinia Tracheiphila and the Multiplication and Movement of the Bacterium in Selected Resistant and Susceptible Cucurbits written by Jon Craig Watterson and published by . This book was released on 1971 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Insect Frass as a Pathway for Transmission of Bacterial Wilt of Cucurbits written by Robert F. Mitchell and published by . This book was released on 2008 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cucumber Diseases written by William Fred Moore and published by . This book was released on 1969 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Diseases Bacterial Wilt of Cucumber Cantelope and Watermelon written by University of Nebraska. Extension Service and published by . This book was released on 1959 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
