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Author : Frederick Vernon Rand,Ella Morgan Austin Enlows
Publisher : Unknown
Page : 48 pages
File Size : 55,9 Mb
Release : 1920
Category : Agriculture
ISBN : UIUC:30112102048730
Author : Frederick V. Rand
Publisher : Forgotten Books
Page : 58 pages
File Size : 41,8 Mb
Release : 2017-10-28
Category : Science
ISBN : 1528425030
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.
Author : B. D. Barry,J. A. Burnside,H. S. Myers
Publisher : Unknown
Page : 48 pages
File Size : 48,9 Mb
Release : 1976
Category : Cucurbitaceae
ISBN : SRLF:AA0005834379
Author : Jon Craig Watterson
Publisher : Unknown
Page : 92 pages
File Size : 52,8 Mb
Release : 1971
Category : Electronic
ISBN : WISC:89015373491
Author : Frank Hurlbut Chittenden
Publisher : Unknown
Page : 12 pages
File Size : 45,7 Mb
Release : 1909
Category : Agricultural pests
ISBN : HARVARD:32044107174443
Author : B. D. Barry
Publisher : Forgotten Books
Page : 38 pages
File Size : 51,9 Mb
Release : 2018-02-22
Category : Health & Fitness
ISBN : 0666109443
Excerpt from Cucumis Species Resistance to Striped Cucumber Beetle Seedling Feeding and Bacterial Wilt Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan Afghanistan. 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.
Author : R.S. Fraser
Publisher : Springer Science & Business Media
Page : 473 pages
File Size : 42,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400951457
Plant resistance to pathogens is one of the most important strategies of disease control. Knowledge of resistance mechanisms, and of how to exploit them, has made a significant contribution to agricultural productivity. However, the continuous evolution of new variants of pathogen, ana additional control problems posed by new crops and agricultural methods, creates a need for a corresponding increase in our understanding of resistance and ability to utilize it. The study of resistance mechanisms also has attractions from a purely academic point of view. First there is the breadth of the problem, which can be approached at the genetical, molecular, cellular, whole plant or population lev~ls. Often there is the possibility of productive exchange of ideas between different disciplines. Then there is the fact that despite recent advances, many of the mechanisms involved have still to be fully elucidated. Finally, and compared with workers in other areas of biology, the student of resistance is twice blessed in having as his subject the interaction of two or more organisms, with the intriguing problems of recognition, specificity and co-evolution which this raises.
Author : Yuri Dyakov,Vitaly Dzhavakhiya,Timo Korpela
Publisher : Elsevier
Page : 496 pages
File Size : 55,8 Mb
Release : 2007-01-09
Category : Science
ISBN : 0080469337
This book offers a collection of information on successive steps of molecular ‘dialogue’ between plants and pathogens. It additionally presents data that reflects intrinsic logic of plant-parasite interactions. New findings discussed include: host and non-host resistance, specific and nonspecific elicitors, elicitors and suppressors, and plant and animal immunity. This book enables the reader to understand how to promote or prevent disease development, and allows them to systematize their own ideas of plant-pathogen interactions. * Offers a more extensive scope of the problem as compared to other books in the market * Presents data to allow consideration of host-parasite relationships in dynamics and reveals interrelations between pathogenicity and resistance factors * Discusses beneficial plant-microbe interactions and practical aspects of molecular investigations of plant-parasite relationships * Compares historical study of common and specific features of plant immunity with animal immunity
Author : Anthony Perry Keinath,William M. Wintermantel,Thomas Andrew Zitter
Publisher : Unknown
Page : 220 pages
File Size : 46,9 Mb
Release : 2017
Category : Cucurbitaceae
ISBN : 0890545731
Author : Arden F. Sherf,Alan A. MacNab
Publisher : John Wiley & Sons
Page : 744 pages
File Size : 46,8 Mb
Release : 1986-10-03
Category : Gardening
ISBN : 0471058602
Describes the diseases of important vegetable crops and tells how to control them. Covers all disease types: bacterial, fungal, viral, nematode, and abiotic, and provides information on their cycles. Describes control measures, including resistant varieties, fungicides, crop rotation, and seed treatments. Well-illustrated and readable. Completely revised from first edition.
Author : R. K. Horst
Publisher : Springer Science & Business Media
Page : 1242 pages
File Size : 42,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781468476828
It was a compliment to me to be asked to prepare the fourth edition of Westcott's Plant Disease Handbook, and the decision to accept the responsi bility for the fourth edition and now the fifth edition was not taken lightly. The task has been a formidable one. I have always had a great respect professionally for Dr. Cynthia Westcott. That respect has grown considerably with the completion of the two editions. I now fully realize the tremendous amount of effort expended by Dr. Westcott in developing the Handbook. A book such as this is never finished, since one is never sure that everything has been included that should be. I would quote and endorse the words of Dr. Westcott in her preface to the first edition: "It is easy enough to start a book on plant disease. It is impossible to finish it. " This revision of the Handbook retains the same general format contained in the previous editions. The chemicals and pesticides regulations have been updated; a few taxonomic changes have been made in the bacteria, fungi, and mistletoes; the changing picture in diseases caused by viruses and/or viruslike agents has been described. A few new host plants have been added, and many recently reported diseases as well as previously known diseases listed now on new hosts have been included. In addition, photographs have been replaced where possible, and the color photograph section has been retained.
Author : Hugo Campos,Oscar Ortiz
Publisher : Springer Nature
Page : 524 pages
File Size : 44,7 Mb
Release : 2019-12-03
Category : Science
ISBN : 9783030286835
This book is open access under a CC BY 4.0 license. This book provides a fresh, updated and science-based perspective on the current status and prospects of the diverse array of topics related to the potato, and was written by distinguished scientists with hands-on global experience in research aspects related to potato. The potato is the third most important global food crop in terms of consumption. Being the only vegetatively propagated species among the world’s main five staple crops creates both issues and opportunities for the potato: on the one hand, this constrains the speed of its geographic expansion and its options for international commercialization and distribution when compared with commodity crops such as maize, wheat or rice. On the other, it provides an effective insulation against speculation and unforeseen spikes in commodity prices, since the potato does not represent a good traded on global markets. These two factors highlight the underappreciated and underrated role of the potato as a dependable nutrition security crop, one that can mitigate turmoil in world food supply and demand and political instability in some developing countries. Increasingly, the global role of the potato has expanded from a profitable crop in developing countries to a crop providing income and nutrition security in developing ones. This book will appeal to academics and students of crop sciences, but also policy makers and other stakeholders involved in the potato and its contribution to humankind’s food security.
Author : Charles E. Main
Publisher : Unknown
Page : 178 pages
File Size : 48,8 Mb
Release : 1964
Category : Cucumbers
ISBN : WISC:89011198181
Author : Haiping Wang
Publisher : BoD – Books on Demand
Page : 230 pages
File Size : 51,8 Mb
Release : 2021-10-06
Category : Science
ISBN : 9781839680236
Cucumber is a well-known and popular vegetable because of its rich nutrient profile and versatile uses in culinary, therapeutic and cosmetic purposes. This book provides information on the plant’s origins, biology, and breeding as well as research on its economic value, utilization, cultivation, and therapeutic benefits.
Author : Pam Dawling
Publisher : New Society Publishers
Page : 459 pages
File Size : 49,8 Mb
Release : 2013-02-01
Category : Gardening
ISBN : 9781550925128
Growing for 100 - the complete year-round guide for the small-scale market grower. Across North America, an agricultural renaissance is unfolding. A growing number of market gardeners are emerging to feed our appetite for organic, regional produce. But most of the available resources on food production are aimed at the backyard or hobby gardener who wants to supplement their family's diet with a few homegrown fruits and vegetables. Targeted at serious growers in every climate zone, Sustainable Market Farming is a comprehensive manual for small-scale farmers raising organic crops sustainably on a few acres. Informed by the author's extensive experience growing a wide variety of fresh, organic vegetables and fruit to feed the approximately one hundred members of Twin Oaks Community in central Virginia, this practical guide provides: Detailed profiles of a full range of crops, addressing sowing, cultivation, rotation, succession, common pests and diseases, and harvest and storage Information about new, efficient techniques, season extension, and disease resistant varieties Farm-specific business skills to help ensure a successful, profitable enterprise Whether you are a beginning market grower or an established enterprise seeking to improve your skills, Sustainable Market Farming is an invaluable resource and a timely book for the maturing local agriculture movement.