Eriophyoid Mites: Progress and Prognoses PDF Download

Author: Edward A. Ueckermann
Publisher: Springer Science & Business Media
ISBN: 9048195624
Category : Technology & Engineering
Languages : en
Pages : 306

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Book Description
Fourteen informative papers dealing with their DNA, species interactions, adventiveness, host specificity, potential as boi-contol agents of weeds, chemical control, behaviour, their role in fungal pathogen epidemiology, influence in forests and on ornamentals, collecting and mounting techniques and their interaction with crops are presented here. This is an extensive and valuable contribution to eriophyoid science and a must for present and future researchers in this field.

Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 784

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Author: Robert Martin Harveson
Publisher:
ISBN: 9780890543658
Category : Beets
Languages : en
Pages : 0

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Book Description
This second edition has been significantly expanded and is organized into several major sections, including a new introduction with brief histories of beet production, botany, and breeding. The remainder of the book is divided into 5 major parts: biotic disorders, abiotic disorders, postharvest deterioration of sugar beet, major insect and arthropod pests, and newly emerging issues. The description of each disease includes a general account of its importance and world distribution, symptoms, causal organism or agent, disease cycle and epidemiology, management, and selected references.

Author: James W. Amrine
Publisher:
ISBN: 9780930337131
Category : Acariformes
Languages : en
Pages : 798

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Author: Peter Lesica
Publisher:
ISBN: 9781889878874
Category :
Languages : en
Pages : 794

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Book Description
Montana is the fourth largest state in the United States. It includes portions of both the Northern Great Plains and the Rocky Mountains. Vegetation of Montana is diverse, due primarily to the size of the state as well as great topographic relief which provides strong variation in environmental factors. Montana has a relatively large flora for a northern continental region due to being at the intersection of the Cordilleran, Great Plains, and Boreal floristic provinces. This book is a comprehensive field guide to the more than 2,500 species of Montana's vascular plants. It contains descriptions as well as habitat and distribution information based on specimens housed at the state's two major herbaria. Portraits or illustrations of diagnostic structures are provided for nearly one-third of the species.

Author: Philip Tow
Publisher: Springer Science & Business Media
ISBN: 140209132X
Category : Technology & Engineering
Languages : en
Pages : 1324

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Book Description
While a good grasp of the many separate aspects of agriculture is important, it is equally essential for all those involved in agriculture to understand the functioning of the farming system as a whole and how it can be best managed. It is necessary to re-assess and understand rain-fed farming systems around the world and to find ways to improve the selection, design and operation of such systems for long term productivity, profitability and sustainability. The components of the system must operate together efficiently; yet many of the relationships and interactions are not clearly understood. Appreciation of these matters and how they are affected by external influences or inputs are important for decision making and for achieving desirable outcomes for the farm as a whole. This book analyses common rain-fed farming systems and defines the principles and practices important to their effective functioning and management.

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ISBN:
Category : Plants for land reclamation
Languages : en
Pages : 476

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Book Description

Author: William W. Bockus
Publisher: American Phytopathological Society
ISBN: 9780890543856
Category : Wheat
Languages : en
Pages : 0

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Book Description
Reference in this publication to a trademark, proprietary product, or company name by personnel of the U.S. Department of Agriculture or anyone else is intended for explicit description only and does not imply approval or recommendation to the exclusion of others that may be suitable. --Book Jacket.

Author: Bettina Weber
Publisher: Springer
ISBN: 3319302140
Category : Nature
Languages : en
Pages : 540

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Book Description
This volume summarizes our current understanding of biological soil crusts (biocrusts), which are omnipresent in dryland regions. Since they cover the soil surface, they influence, or even control, all surface exchange processes. Being one of the oldest terrestrial communities, biocrusts comprise a high diversity of cyanobacteria, algae, lichens and bryophytes together with uncounted bacteria, and fungi. The authors show that biocrusts are an integral part of dryland ecosystems, stabilizing soils, influencing plant germination and growth, and playing a key role in carbon, nitrogen and water cycling. Initial attempts have been made to use biocrusts as models in ecological theory. On the other hand, biocrusts are endangered by local disruptions and global change, highlighting the need for enhanced recovery methods. This book offers a comprehensive overview of the fascinating field of biocrust research, making it indispensable not only for scientists in this area, but also for land managers, policy makers, and anyone interested in the environment.

Author: L. R. Jeppson
Publisher: Univ of California Press
ISBN: 9780520023819
Category : Science
Languages : en
Pages : 710

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Book Description
Introduction to the acari, Population ecology, History of chemical control and mite resistance, Principles of chemical control of plant-feeding mites, Biological enemies of mites, Mites and plant diseases, The tetranychidae donnadieu, Injurious tetranychid mites, The eriophyoidea nalepa, Injurious eriophyoid mites.