Response Of Douglas Fir Seedlings To Nitrogen Sulfur And Phosphorus Fertilizers Classic Reprint
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Response Of Douglas Fir Seedlings To Nitrogen Sulfur And Phosphorus Fertilizers Classic Reprint
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Author : M. A. Radwan
language : en
Publisher: Forgotten Books
Release Date : 2018-01-21
Response Of Douglas Fir Seedlings To Nitrogen Sulfur And Phosphorus Fertilizers Classic Reprint written by M. A. Radwan and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-21 with Business & Economics categories.
Excerpt from Response of Douglas-Fir Seedlings to Nitrogen, Sulfur, and Phosphorus Fertilizers This study, therefore, was designed to study effects of N, S, and P additions on growth and nutrient content of Douglas - fir seedlings grown in two forest soils in a lathhouse. We are aware of the limitations of pot tests in providing prescriptions that can be directly applied to field situations. However, the very limited information about Douglas - fir nutrition now available and the high cost of establishing field tests strongly justify preliminary experimentation with seedlings. 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.
Response Of Douglas Fir Seedlings To Nitrogen Sulfur And Phosphorus Fertilizers
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Author : M. A. Radwan
language : en
Publisher:
Release Date : 1985
Response Of Douglas Fir Seedlings To Nitrogen Sulfur And Phosphorus Fertilizers written by M. A. Radwan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Douglas fir categories.
Handbook Of Plant Nutrition
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Author : Allen V. Barker
language : en
Publisher: CRC Press
Release Date : 2016-04-19
Handbook Of Plant Nutrition written by Allen V. Barker and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-19 with Science categories.
The burgeoning demand on the world food supply, coupled with concern over the use of chemical fertilizers, has led to an accelerated interest in the practice of precision agriculture. This practice involves the careful control and monitoring of plant nutrition to maximize the rate of growth and yield of crops, as well as their nutritional value.
The Supporting Roots Of Trees And Woody Plants Form Function And Physiology
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Author : A. Stokes
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-04-17
The Supporting Roots Of Trees And Woody Plants Form Function And Physiology written by A. Stokes and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-17 with Science categories.
This publication comprises the proceedings of the first International Conference devoted to the structural roots of trees and woody plants. 'The Supporting Roots - Structure and Function,' 20-24 July 1998, Bordeaux, France. The meeting was held under the auspices ofIUFRO WPS 2. 01. 13 'Root Physiology and Symbiosis,' and its aim was to bring together scientific researchers, foresters and arboriculturalists, to discuss current problems in structural root research and disseminate knowledge to an audience from a wide disciplinary background. For the first time in an international conference, emphasis was placed on presenting recent reseach in the field of tree anchorage mechanics and root biomechanics. The way in which tree stability can be affected by root system symmetry and architecture was addressed, as well as how movement during wind sway can influence the development and shape of woody roots. The role of different nursery and planting techniques was discussed, in relation to effects on root system form and development. Root response to different environmental stresses, including water, temperature, nutrient and mechanical stress was addressed in detail. The structure and function of woody roots was also considered at different levels, from coarse to fine roots, with several papers discussing the interaction between roots and the rhizosphere. One of the conference highlights was the presentation of new methods in root research, by a series of workshops held at LRBB-INRA, Pierroton, on the northern border of the Gascony forest.
Nitrogen Fixation In Acacias
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Author : John Brockwell
language : en
Publisher:
Release Date : 2005
Nitrogen Fixation In Acacias written by John Brockwell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Acacia categories.
2. The plant; 3. The bacteria; 4. The symbiosis; 5. Enhancement of the symbiosis; 6. Exploitation of the symbiosis; 7. General conclusions and prognosis.
Gaseous Loss Of Nitrogen From Plant Soil Systems
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Author : J.R. Freney
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-04-17
Gaseous Loss Of Nitrogen From Plant Soil Systems written by J.R. Freney and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-17 with Science categories.
A growing interest has been shown recently in the dymanics of nitrogen in agricultural and natural ecosystems. This has been caused by increasing demands for food and fibre by a rapidly expanding world population, and by a growing concern that increased land clearing, cultivation and use of both fertilizer and biologically fixed nitrogen can have detrimental effects on the environment. These include effects on water quality, eutrophication of surface waters and changes in atmospheric composition all caused by increased cycling of nitrogenous compounds. The input and availability of nitrogen frequently affects the productivity of farming systems more than any other single management factor, but often the nitrogen is used inefficiently. Much of the fertilizer nitrogen applied to the soil is not utilised by the crop: it is lost either in solution form, by leaching of nitrate, or in gaseous forms as ammonia, nitrous oxide, nitric oxide or dinitrogen. The leached nitrate can contaminate rivers and ground waters, while the emitted ammonia can contaminate surface waters or combine with atmospheric sulfur dioxide to form aerosols which affect visibility, health and climate. There is also concern that increased evolution of nitrous oxide will deplete the protective ozone layer of the stratosphere. The possibility of a link between the intensity of agricultural use of nitrogen, nitrous oxide emissions and amounts of stratospheric ozone has focussed attention on these interactions.
Physical And Chemical Mechanisms In Molecular Radiation Biology
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Author : William A. Glass
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Physical And Chemical Mechanisms In Molecular Radiation Biology written by William A. Glass and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
The fundamental understanding of the production of biological effects by ionizing radiation may well be one of the most important scientific objectives of mankind; such understanding could lead to the effective and safe utilization of the nuclear energy option. In addition, this knowledge will be of immense value in such diverse fields as radiation therapy and diagnosis and in the space program. To achieve the above stated objective, the U. S. Department of Energy (DOE) and its predecessors embarked upon a fundamental interdisciplinary research program some 35 years ago. A critical component of this program is the Radiological and Chemical Physics Program (RCPP). When the RCPP was established, there was very little basic knowledge in the fields of physics, chemistry, and biology that could be directly applied to understanding the effects of radiation on biological systems. Progress of the RCPP program in its first 15 years was documented in the proceedings of a conference held at Airlie, Virginia, in 1972. At this conference, it was clear that considerable progr:ess had been made in research on the physical and chemical processes in well-characterized systems that could be used to understand biological effects. During this period of time, most physical knowledge was obtained for the gas phase because the technology and instru mentation had not progressed to the point that measurements could be made in liquids more characteristic of biological materials.
Forest Pathology And Plant Health
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Author : Matteo Garbelotto
language : en
Publisher: MDPI
Release Date : 2018-04-13
Forest Pathology And Plant Health written by Matteo Garbelotto and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-13 with Electronic books categories.
This book is a printed edition of the Special Issue "Forest Pathology and Plant Health" that was published in Forests
River Ecology And Management
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Author : Robert Naiman
language : en
Publisher: Springer Science & Business Media
Release Date : 2001-02-16
River Ecology And Management written by Robert Naiman and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-02-16 with Science categories.
As the vast expanses of natural forests and the great populations of salmonids are harvested to support a rapidly expanding human population, the need to understand streams as ecological systems and to manage them effectively becomes increasingly urgent. The unfortunate legacy of such natural resource exploitation is well documented. For several decades the Pacific coastal ecoregion of North America has served as a natural laboratory for scientific and managerial advancements in stream ecology, and much has been learned about how to better integrate ecological processes and characteristics with a human-dominated environment. These in sightful but hard-learned ecological and social lessons are the subject of this book. Integrating land and rivers as interactive components of ecosystems and watersheds has provided the ecological sciences with impor tant theoretical foundations. Even though scientific disciplines have begun to integrate land-based processes with streams and rivers, the institutions and processes charged with managing these systems have not done so successfully. As a result, many of the watersheds of the Pacific coastal ecoregion no longer support natural settings for environmental processes or the valuable natural resources those processes create. An important role for scientists, educators, and decision makers is to make the integration between ecology and con sumptive uses more widely understood, as well as useful for effective management.
The Ecophysiology Of Plant Phosphorus Interactions
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Author : Philip J. White
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-06-03
The Ecophysiology Of Plant Phosphorus Interactions written by Philip J. White and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-06-03 with Science categories.
Phosphorus (P) is an essential macronutrient for plant growth. It is as phosphate that plants take up P from the soil solution. Since little phosphate is available to plants in most soils, plants have evolved a range of mechanisms to acquire and use P efficiently – including the development of symbiotic relationships that help them access sources of phosphorus beyond the plant’s own range. At the same time, in agricultural systems, applications of inorganic phosphate fertilizers aimed at overcoming phosphate limitation are unsustainable and can cause pollution. This latest volume in Springer’s Plant Ecophysiology series takes an in-depth look at these diverse plant-phosphorus interactions in natural and agricultural environments, presenting a series of critical reviews on the current status of research. In particular, the book presents a wealth of information on the genetic and phenotypic variation in natural plant ecosystems adapted to low P availability, which could be of particular relevance to developing new crop varieties with enhanced abilities to grow under P-limiting conditions. The book provides a valuable reference material for graduates and research scientists working in the field of plant-phosphorus interactions, as well as for those working in plant breeding and sustainable agricultural development.