Author : Lynette K. Abbott
Publisher : Springer Science & Business Media
Page : 267 pages
File Size : 16,80 MB
Release : 2007-10-23
Category : Nature
ISBN : 1402066198
It is becoming more relevant to explore soil biological processes in terms of their contribution to soil fertility. This book presents a comprehensive scientific overview of the components and processes that underpin the biological characteristics of soil fertility. It highlights the enormous diversity of life in soil and the resulting effects that management of land can have on the contribution of this diverse community to soil fertility in an agricultural context.
Author : C. K. K. Gachene
Publisher :
Page : 172 pages
File Size : 25,28 MB
Release : 2003
Category : Soil fertility
ISBN :
Author : Donald J. Childs
Publisher : Cambridge University Press
Page : 284 pages
File Size : 36,4 MB
Release : 2001-09-06
Category : Literary Criticism
ISBN : 9780521806015
In Modernism and Eugenics, first published in 2001, Donald Childs shows how Virginia Woolf, T. S. Eliot and W. B. Yeats believed in eugenics, the science of race improvement and adapted this scientific discourse to the language and purposes of the modern imagination. Childs traces the impact of the eugenics movement on such modernist works as Mrs Dalloway, A Room of One's Own, The Waste Land and Yeats's late poetry and early plays. The language of eugenics moves, he claims, between public discourse and personal perspectives. It informs Woolf's theorization of woman's imagination; in Eliot's poetry, it pictures as a nightmare the myriad contemporary eugenical threats to humankind's biological and cultural future. And for Yeats, it becomes integral to his engagement with the occult and his commitment to Irish Nationalism. This is an interesting study of a controversial theme which reveals the centrality of eugenics in the life and work of several major modernist writers.
Author : Alfred E. Hartemink
Publisher : CABI
Page : 380 pages
File Size : 23,36 MB
Release : 2003
Category : Technology & Engineering
ISBN : 9780851998497
Wide coverage of soils and perennial cropping systems in the tropicsSynthesis of decades of researchChallenges assumptions on the benefits of plantations for soil fertilityIt is generally assumed that soil fertility decline is widespread in the tropics and that this is largely associated with annual cropping and subsistence farming. In contrast, perennial plant cover (as in plantation agriculture) provides better protection for the soil.This book reviews these concepts, focusing on soil chemical changes under different land-use systems in the tropics. These include perennial crops, annual crops and forest plantations. Two case studies, on sisal plantations in Tanzania and sugar cane in Papua New Guinea, are presented for detailed analysis. The author demonstrates that soil fertility decline is also a problem on plantations.
Author : Pedro A. Sanchez
Publisher : Cambridge University Press
Page : 685 pages
File Size : 47,31 MB
Release : 2019-01-10
Category : Business & Economics
ISBN : 1107176050
Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.
Author : G. Schroth
Publisher : CABI
Page : 456 pages
File Size : 18,45 MB
Release : 2003-02-19
Category : Technology & Engineering
ISBN : 9780851997926
Annotation. Successful agroforestry requires an understanding of the complex relationship between trees, crops and soils. This book provides a review of both economic and biophysical aspects of soil use and research in agroforestry, with an emphasis on nutrient-poor forest and savanna soils. Key topics covered include the economics of soil fertility management, cycling of water, nutrients and organic matter, soil structure, and soil biological processes. The book combines synthetic overviews of research results and a review of methods used in research.From the foreword: 2The book is written within a particular context - soil fertility development under agroforestry. At first this may seem very specific and thus limited in appeal and application. But over the last decade or so agroforestry research has been one of the most influential in developing new insights into soil biology and fertility and thus provides a very suitable framework for review of progress. Furthermore the influence of trees on soil is profound and of significance beyond agroforestry systems, so the book is likely to be of interest in the wider spheres of agriculture, forestry and ecological sciences.3 Mike Swift, TSBF, Nairobi, Kenya.
Author : Louis Milton Thompson
Publisher : McGraw-Hill Companies
Page : 516 pages
File Size : 22,39 MB
Release : 1973
Category : Technology & Engineering
ISBN :
Soil; Soil formation; Physical properties of soils; Soil water; Soil organic matter; Soil mnineralogy; Soil chemistry; Amending the soil; Fertilizers; Nitrogen; Phosphorus; Potassium; Calcium, Magnesium and Sulfur; The micronutrients; Variations in plant composition; Soil classification and survey; Land use and soil management; Water management; Soil conservation; Soil pollution.
Author : Newman Turner
Publisher : Acres USA
Page : 247 pages
File Size : 50,80 MB
Release : 2009-01-01
Category : Science
ISBN : 9781601730091
Fertility Farming explores an approach that makes minimal use of plowing, eschews chemical fertilizers and pesticides, and emphasizes soil fertility via crop rotation, composting, cover cropping and manure application.Turner holds that the foundation of the effectiveness of nature¿s husbandry is a fertile soil ¿ and the measure of a fertile soil is its content of organic matter, ultimately, its humus. Upon a basis of humus, nature builds a complete structure of healthy life ¿ without need for disease control. In fact, as disease is the outcome of unbalancing of the natural order ¿ it serves as a warning that something is wrong. Not just theory, this book was written to serve as a practical guide for farmer
Author : Nancy Collins Johnson
Publisher : Elsevier
Page : 526 pages
File Size : 41,24 MB
Release : 2016-11-03
Category : Science
ISBN : 0128043830
Mycorrhizal Mediation of Soil: Fertility, Structure, and Carbon Storage offers a better understanding of mycorrhizal mediation that will help inform earth system models and subsequently improve the accuracy of global carbon model predictions. Mycorrhizas transport tremendous quantities of plant-derived carbon below ground and are increasingly recognized for their importance in the creation, structure, and function of soils. Different global carbon models vary widely in their predictions of the dynamics of the terrestrial carbon pool, ranging from a large sink to a large source. This edited book presents a unique synthesis of the influence of environmental change on mycorrhizas across a wide range of ecosystems, as well as a clear examination of new discoveries and challenges for the future, to inform land management practices that preserve or increase below ground carbon storage. - Synthesizes the abundance of research on the influence of environmental change on mycorrhizas across a wide range of ecosystems from a variety of leading international researchers - Focuses on the specific role of mycorrhizal fungi in soil processes, with an emphasis on soil development and carbon storage, including coverage of cutting-edge methods and perspectives - Includes a chapter in each section on future avenues for further study
Author : Johannes Lehmann
Publisher : Springer Science & Business Media
Page : 510 pages
File Size : 23,44 MB
Release : 2006-02-25
Category : Technology & Engineering
ISBN : 1402025971
Dark Earths are a testament to vanished civilizations of the Amazon Basin, but may also answer how large societies could sustain intensive agriculture in an environment of infertile soils. This book examines their origin, properties, and management. Questions remain: were they intentionally produced or a by-product of habitation. Additional new and multidisciplinary perspectives by leading experts may pave the way for the next revolution in soil management in the humid tropics.
