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Humus

Humus

Autore: Gaspard Kœnig

Numero di pagine: 317

Progressi e sfide della nematologia è il titolo della conferenza, ben poco partecipata, in cui Arthur e Kevin si incontrano per la prima volta. Nematologia, cioè lo studio dei vermi. Pardon, lombrichi. La sede è una delle aule ipermoderne dell’istituto AgroParisTech, inspiegabilmente trasferito dalle campagne dell’Île-deFrance alla spianata di cemento dell’altopiano di Saclay: un’infilata di centri commerciali e isole spartitraffico da cui è più che mai arduo immaginare un futuro verde per la nazione. Eppure sono proprio i lombrichi, arringa il relatore, uno dei migliori strumenti a disposizione per aggiustare il pianeta: sanno trasformare i rifiuti, anche quelli umani, in fine e ricco terriccio nero – humus. Un’idea semplice ma robusta che, a partire da quel giorno in aula, mette radici nella mente dei due protagonisti e germoglia in un’amicizia tenace, anche quando i loro percorsi si allontanano: Arthur, isolato nella grande tenuta di famiglia in Bassa Normandia, si ripropone di salvare ettari di terreno dilaniato dai pesticidi; Kevin invece, di origini modeste, ripone le sue speranze in una start-up di vermicompostaggio che ben presto spicca, anche...

Humus Chemistry

Humus Chemistry

Autore: F. J. Stevenson

Numero di pagine: 516

A reference text focusing on basic organic chemistry and reactions of naturally occurring organic substances in soils. Covers pools of organic matter in soils, transformations, methods of extraction and fractionation. Section two deals primarily with the chemistry of known classes of organic compounds in soils including saccharides, lipids and constituents containing nitrogen, phosphorus and sulfur. Section three is concerned with basic organic chemistry of humic substances, followed by the importance of organic matter associations and interactions. Contains new chapters on NMR spectroscopy, analytical pyrolysis and on chemical structures.

Miettes paysannes, poignées d'humus

Miettes paysannes, poignées d'humus

Autore: Roland Louvrier

Numero di pagine: 136

Cet ouvrage est une réédition numérique d’un livre paru au XXe siècle, désormais indisponible dans son format d’origine.

Humus

Humus

Autore: Fabienne Kanor

Numero di pagine: 230

While researching in Nantes, a port city enriched by the slave trade, celebrated French novelist Fabienne Kanor came across a chilling report written in 1774 by the commander of a slave ship, Le Soleil. Captain Louis Mosnier recounted the loss of valuable "cargo" when fourteen African women escaped from the ship’s hold to leap overboard rather than face enslavement. Half of them drowned or were eaten by sharks. From this tragic incident, Kanor has composed a powerful, polyphonic novel in which each woman tells her own vivid story. Their disparate lives from differing cultures, conditions, and perspectives intersect through their violent mistreatment, profound sense of disorientation, and collective act of resistance. These intertwined narratives reveal the brutalizing effects of slavery, not only on the victim but also on the oppressor: the master can no more escape its dehumanizing effects than can the slave.

Humus

Humus

Autore: Sabine Adler

Numero di pagine: 112

A l'image et la texture d'une terre argileuse, la mémoire se pétrit, refaçonne le passé et les êtres, préserve par sa porosité la fraîcheur des souvenirs, mais les laisse aussi parfois s'enfuir. Ce récit personnel tisse des destinées simples et proches de l'impensable. Devenue enseignante, la narratrice expérimente la fabrique des préjugés qui peut mener au lynchage et à l'extermination.

De la formation de la terre végétale nommée humus et de l'effet des engrais

De la formation de la terre végétale nommée humus et de l'effet des engrais

Autore: B. G. Sage

Numero di pagine: 34
Membrane-micelle Model for Humus in Soils and Sediments and Its Relation to Humification

Membrane-micelle Model for Humus in Soils and Sediments and Its Relation to Humification

Autore: R. L. Wershaw

Numero di pagine: 56
Humus, its Structure and Role in Agriculture and Environment

Humus, its Structure and Role in Agriculture and Environment

Autore: J. Kubát

Numero di pagine: 222

This volume presents the proceedings of the 10th internationalsymposium Humus et Planta held in Prague in August 19-23,1991. The main topics of this book are devoted to the recentadvances in fundamental, as well as applied research of humicsubstances, the most abundant of the naturally occuringmacromolecules of nature, the understanding of their natureand how they react and interact in their natural environments.Texts are included on the structure, physical and chemicalproperties of humic substances; the relationships among humus,soil properties and fertility; the biotransformations oforganic substances in the soil; the relationships betweenhumic substances and plants and the interactions of humus andxenobiotic substances. This book presents recent knowledge ofthe complicated and challenging humic substances. It will beof interest not only to scientist, but also to Universityteachers and students of agricultural and environmentalsciences.

Gaia's Garden

Gaia's Garden

Autore: Toby Hemenway

Numero di pagine: 330

“Gaia’s Garden will be recorded in history as a milestone for gardeners and landscapers. . . An amazing achievement.”–Paul Stamets The classic book about ecological gardening–whatever size your garden–with over 250,000 copies sold! “A great book!”–Men’s Journal Gaia’s Garden has sparked the imagination of home gardeners the world over by introducing a simple message: working with nature, not against her, results in more beautiful, abundant, and forgiving gardens. Many people mistakenly think that “ecological gardening”—which involves growing a wide range of edible and other useful plants—can take place only on a large, multiacre scale. As Hemenway demonstrates, it’s fun and easy–even for the beginner–to create a “backyard ecosystem” by assembling communities of plants that can work cooperatively and perform a variety of functions, including: Building and maintaining soil fertility and structure Catching and conserving water in the landscape Providing a rewilded and biodiverse habitat for beneficial insects, birds, and animals Growing an edible “forest” that yields seasonal fruits, nuts, and other foods This revised and updated edition...

Guide de la fertilisation raisonnée

Guide de la fertilisation raisonnée

Autore: Christian Schvartz , Jacques Decroux , Jean-charles Muller

Numero di pagine: 420

L'ouvrage propose aux acteurs de la filière agricole les clefs de la mise en œuvre d'une fertilisation raisonnée, appliquée aux grandes cultures et aux prairies. Après avoir rappelé, le caractère unique des lois de l'agronomie, applicables à toutes les formes de production agricole, les auteurs abordent : - les cycles biologiques fondamentaux des éléments qui contribuent à la nutrition des végétaux, - le calcul de la fertilisation, en fonction de l'offre du sol, des objectifs de production et des interactions entre les sols et les plantes, - les moyens (notamment analytiques) dont l'agriculteur dispose pour déterminer les apports en fertilisants nécessaires ainsi que les modalités de leur application, - les aspects de la fertilisation dans différents contextes environnement, territoires, extensification, économie, qualité, réglementation. La pratique de la fertilisation, longtemps dominée par les seules contraintes technico-économiques, a considérablement évolué au cours des 50 dernières années, valorisant le progrès des connaissances scientifiques, accompagnant les exigences des consommateurs et la prise en compte des contraintes environnementales. A...

Écologie forestière

Écologie forestière

Autore: Hans-jürgen Otto

Numero di pagine: 404

Un traité complet d'écologie forestière est enfin publié en français, grâce à la traduction du livre du professeur Otto. Cet ouvrage, unique en son genre, est basé sur une longue pratique, tant dans le domaine de la sylviculture que dans l'enseignement universitaire. Est-il besoin de présenter l'auteur ? Enseignant chercheur en écologie forestière à l'université de Göttingen depuis 1984 puis à Dresde en 1992, il n'a cessé d'étudier les forêts et leur fonctionnement. Il a eu souvent l'occasion d'y observer des catastrophes, dues ou non à l'activité humaine, comme les dépérissements forestiers qui ont soulevé l'émotion que l'on sait depuis 15 ans. Il y a acquis la conviction qu'on ne saurait parler du développement des arbres et des forêts qu'à condition de prendre en compte les perturbations de toutes sortes qui peuvent les affecter. D'où le parti pris, dans son ouvrage, de mettre l'accent sur des cas concrets observés en forêt.

Agriculture naturelle

Agriculture naturelle

Autore: Joseph Pousset

Numero di pagine: 450

Nourrir une population plus nombreuse, consommer moins d'énergie fossile, ne plus polluer : voilà le triple défi, apparemment insurmontable, auquel est confrontée l'agriculture mondiale... L'auteur propose ici de nous inspirer d'une observation attentive de la nature qui "sait " depuis bien longtemps "produire" de manière parfaitement durable. Son raisonnement original et novateur, audacieux et parfois décapant, s'appuie à la fois sur une sensibilité à la nature, un humanisme constant, l'alliance trop rare entre expérience paysanne et connaissance scientifique rigoureuse. Dans cet ouvrage il nous donne d'abord sa vision de la "responsabilité" de l'agriculteur puis résume les principes agronomiques de base auxquels il est attaché et les techniques culturales qui en découlent. Après s'être attardé sur la culture du blé et celle des plantes énergétiques, il n'oublie pas le petit domaine de l'amateur. Il poursuit par une étude sans concessions sur la capacité nourricière, à l'échelle nationale puis planétaire des techniques qu'il préconise. Il termine par rune réflexion sur nos modes de vie et leurs implications sur la nature et l'agriculture. Ce livre est...

Elsevier's Dictionary of Soil Science

Elsevier's Dictionary of Soil Science

Autore: A. Canarache , I.i. Vintila , I. Munteanu

Numero di pagine: 1355

This dictionary includes some 9200 terms, each with a definition and often and additional descriptive text in English, the terms being translated in French, German and Spanish. It is more complete than similar previously published dictionaries or glossaries, and contains all fields of soil science as well as some adjacent fields of other earth sciences, agriculture and engineering. Present concepts and definitions are detailed along with earlier concepts, not only for historical reasons but also for developing new ideas. Concepts, terms and definitions usual in literature of various countries are discussed and compared, to offer an appropriate exchange of ideas. Soil classifications and methodologies for soil investigation coming from a score of European, American and other countries and international organisations are presented, and correlations between names of soil taxa in different classifications are suggested. Readers active in all branches of soil science will find accessible answers to many of their questions, either directly referring to procedures used in the organisations where they work, or related to way of thinking in other countries. Readers active in other...

The Earth as Transformed by Human Action

The Earth as Transformed by Human Action

Autore: B. L. Turner , William C. Clark , Robert W. Kates , John F. Richards , Jessica T. Mathews , William B. Meyer

Numero di pagine: 740

The Earth as Transformed by Human Action is the culmination of a mammoth undertaking involving the examination of the toll our continual strides forward, technical and social, take on our world. The purpose of such a study is to document the changes in the biosphere that have taken place over the last 300 years, to contrast global patterns of change to those appearing on a regional level, and to explain the major human forces that have driven these changes. The first section deals strictly with the major human forces of the past 300 years and the second is a detailed account of the transformations of the global environment wrought by human action. The final section examines a range of perspectives and theories that purport to explain human actions with regard to the biosphere.

Soil Processes and the Carbon Cycle

Soil Processes and the Carbon Cycle

Autore: Rattan Lal , John M. Kimble , Ronald F. Follett , Bobby A. Stewart

Numero di pagine: 632

World soils contain about 1500 gigatons of organic carbon. This large carbon reserve can increase atmospheric concentrations of CO2 by soil misuse or mismanagement, or it can reverse the 'greenhouse' effect by judicious land use and proper soil management. Soil Processes and the Carbon Cycle describes soil processes and their effects on the global carbon cycle while relating soil properties to soil quality and potential and actual carbon reserves in the soil. In addition, this book deals with modeling the carbon cycle in soil, and with methods of soil carbon determinations.

Supplement to Soil Survey of Delta County and Hiawatha National Forest of Alger and Schoolcraft Counties, Michigan

Supplement to Soil Survey of Delta County and Hiawatha National Forest of Alger and Schoolcraft Counties, Michigan

Numero di pagine: 164
Ecological Golf Course Management

Ecological Golf Course Management

Autore: Paul D. Sachs , Richard T. Luff

Numero di pagine: 218

Ecological Golf Course Management is the most comprehensive work ever done on ecological turf management. It's a must-have for any golf course superintendent, sports field manager, or turf professional interested in reducing or eliminating chemical pesticide use. Ecological Golf Course Management focuses on managing the health and welfare of all soil organisms from a single-celled bacterium to fully developed turf plants and connects the reader to the important and relevant interactions between them. It points out ways to exploit natural plant defense systems that have been largely ignored and to engage many of the powerful allies that live above and below ground. Ecological Golf Course Management explores in detail the many aspects of: * Biological and botanical pest control * Plant stress management * Compost production and use * Natural disease suppressants * Biological fertility management * Soil, leaf tissue, and water analysis * The ecological impact of conventional pesticides and cultural practices

Water Resources and Environment

Water Resources and Environment

Autore: Miklas Scholz

Numero di pagine: 496

The 2015 International Conference on Water Resource and Environment (WRE2015) aims to provide a platform where scholars from different countries can exchange ideas, opinions and views. This book is divided into four main themes:1. Hydrology and water resources;2. Water pollution; 3. Water treatment methods, and4. Freshwater ecosystems. Exploring to

Annual Report of the Pennsylvania Department of Agriculture

Annual Report of the Pennsylvania Department of Agriculture

Autore: Pennsylvania. Department Of Agriculture

Numero di pagine: 946

"Report of Pennsylvania Forestry Commission", published in 1896: 1895, pt. 2.

Environmental Science

Environmental Science

Autore: Bernard J. Nebel , Richard T. Wright

Numero di pagine: 666

Revolving around the principles of sustainability, this new edition sets out to provide students with a balanced, complete treatment of environmental issues - their scientific basis, history and future. Material is revised to reflect changing environmental understanding and issues.

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