Download or read book Realidades pr cticas acerca de la fertilidad del suelo la nutrici n del cultivo y la fertilizaci n en los paises tropicales written by H. Schroo and published by . This book was released on 196? with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluaci n de la fertilidad del suelo y de la nutrici n de los cultivos written by Colectivo de autores and published by RUTH. This book was released on 2022-09-20 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Esta obra tiene por objetivo acercarnos a las ciencias agrarias, como la agroquímica, la agronomía, la producción animal, la ciencia forestal, la horticultura, la utilización de abonos, los productos agrícolas no alimenticios, la producción de cultivos, la explotación de cultivos, las técnicas de cultivos, los cultivos de campo, los cultivos forrajeros, la gestión de la producción vegetal, los pastos, las semillas, el comportamiento del suelo en cultivos rotatorios, la fertilidad del suelo, el (manejo) combinado del agua y fertilizantes, y otras reconocidas por la Organización de las Naciones Unidas para la Educación, la Ciencia y la Cultura (UNESCO).
Download or read book Fertilidad del suelo y par metros que la definen written by M. Andrades Rodríguez and published by . This book was released on 2001 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: El suelo, como soporte físico y fuente de elementos nutritivos constituye un elemento fundamental para el correcto desarrollo y la buena producción de cualquier especie vegetal. El conocimiento de los niveles de nutrientes en el suelo, la composición físico-química del mismo, los niveles de extracción de los distintos cultivos y el estado nutricional de éstos es la fase inicial de cualquier intento de mejora cuantitatva y cualitativa de la producción, así como el elemento básico para lograr un uso racional y equilibrado de los fertilizantes, que permitirá evitar tanto el despilfarro económico como las posibles consecuencias respecto a la contaminación de suelos y aguas. El presente trabajo tiene como objetivo facilitar a los técnicos y agricultures una información básica, que les permita realizar una correcta toma de muestras de la tierra y una adecuada interpretación de los resultados analíticos, que haga posible el conocimiento del estado nutricional del suelo en función de las necesidades de las plantas así como un abonado racional y científico.
Download or read book Manejo ecol gico del suelo written by Ana Primavesi and published by . This book was released on 1984 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: L fisiologia de la planta en los tropicos; La raiz; el suelo; La materia organica; La biologia del suelo; La microbiologia del suelo; La bioestructura del suelo; Fertilizacion y nutricion vegetal; Manejo del suelo; Suelos especiales.
Download or read book A New roadmap for the Man and the Biosphere MAB Programme and its World Network of Biosphere Reserves written by UNESCO and published by UNESCO Publishing. This book was released on 2017-03-20 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agroecology written by Stephen R. Gliessman and published by CRC Press. This book was released on 1998 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents powerful arguments against "Environmental Racism", "Incrementalism" and the "Impotence of Planning." Explores case studies of urban planning, county policies, residential development and more. Submits the authors recommendations for preserving the delicate balance of Floridas ecosystem.
Download or read book International Code of Conduct on Pesticide Management written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-09-03 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: The understanding that some pesticides are more hazardous than others is well established. Recognition of this is reflected by the World Health Organization (WHO) Recommended Classification of Pesticides by Hazard, which was first published in 1975. The document classifies pesticides in one of five hazard classes according to their acute toxicity. In 2002, the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) was introduced, which in addition to acute toxicity also provides classification of chemicals according to their chronic health hazards and environmental hazards.
Download or read book Transforming the Rural Nonfarm Economy written by Steven Haggblade and published by Intl Food Policy Res Inst. This book was released on 2007-11-16 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contrary to conventional wisdom that equates rural economies with agriculture, rural residents in developing countries often rely heavily on activities other than farming for their income. Indeed, nonfarm work accounts for between one-third and one-half of rural incomes in the developing world. In recent years, accelerating globalization, increasing competition from large businesses, expanding urban markets for rural goods and services, and greater availability of information and communication technology have combined to expose rural nonfarm businesses to new opportunities as well as new risks. By examining these rapid changes in the rural nonfarm economy, international experts explore how the rural nonfarm economy can contribute to overall economic growth in developing countries and how the poor can participate in this rapidly evolving segment of the economy. The authors review an array of recent studies of the rural nonfarm economy in order to summarize existing empirical evidence, explore policy implications, and identify future research priorities. They examine the varied scale, structure, and composition of the rural nonfarm economy, as well as its relationship with agricultural and urban enterprises. And they address key questions about the role of public intervention in the rural nonfarm economy and how the rural poor can participate in and navigate the rapid transition underway in rural areas. The contributors offer new insights to specialists in rural development and to others interested in overall economic development.
Download or read book Linking Social and Ecological Systems written by Fikret Berkes and published by Cambridge University Press. This book was released on 2000-04-13 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is usually the case that scientists examine either ecological systems or social systems, yet the need for an interdisciplinary approach to the problems of environmental management and sustainable development is becoming increasingly obvious. Developed under the auspices of the Beijer Institute in Stockholm, this new book analyses social and ecological linkages in selected ecosystems using an international and interdisciplinary case study approach. The chapters provide detailed information on a variety of management practices for dealing with environmental change. Taken as a whole, the book will contribute to the greater understanding of essential social responses to changes in ecosystems, including the generation, accumulation and transmission of ecological knowledge, structure and dynamics of institutions, and the cultural values underlying these responses. A set of new (or rediscovered) principles for sustainable ecosystem management is also presented. Linking Social and Ecological Systems will be of value to natural and social scientists interested in sustainability.
Download or read book Building Soils for Better Crops written by Fred Magdoff and published by Sare. This book was released on 2009 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: "'Published by the Sustainable Agriculture Research and Education (SARE) program, with funding from the National Institute of Food and Agriculture, U.S. Department of Agriculture."
Download or read book Multivariate Methods in Aquaculture Research written by Mark Prein and published by WorldFish. This book was released on 1993 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers in this book discuss the emphasis on tilapia, modelling of pond aquaculture, exploratory and confirmatory methods for multivariate analysis, the relationships between multiple regression and analysis of variance and the rationale for sharing and analyzing "old", public domain data, all with emphasis on tropical/subtropical aquaculture systems.
Download or read book Sustainability Assessment written by Alan James Bond and published by Routledge. This book was released on 2013 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Currently the writing on the subject is limited and comprises, for the most part, guidance documents and completed assessments.
Download or read book Land Tenure and Rural Development written by Food and Agriculture Organization of the United Nations and published by FAO. This book was released on 2002 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication deals with key issues in land tenure, especially as they relate to food insecurity and rural development situations. Land tenure issues are frequently ignored in rural development interventions, with often long-lasting, negative results. This guide is designed to assist technical officers in governments and civil society in understanding why and how land tenure issues should be considered in rural development projects. It analyses important contexts such as environmental degradation, gender discrimination, and conflicts, where land tenure is currently of critical concern.
Download or read book Soil Quality for Crop Production and Ecosystem Health written by E.G. Gregorich and published by Elsevier. This book was released on 1997-11-10 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil is a complex body that exists as many types, each with diverse properties that may vary widely across time and space as a function of many factors. This complexity makes the evaluation of soil quality much more challenging than that of water or air quality. Evaluation of soil quality now considers environmental implications as well as economic productivity, seeking to be more holistic in its approach.Thus, soil quality research draws from a wide range of disciplines, blending the approaches of biologists, physicists, chemists, ecologists, economists and agronomists, among others.This book presents a broad perspective of soil quality that includes these various perspectives and gives a strong theoretical basis for the assessment of soil quality.A short glossary provides definitions for terms used throughout the book.
Download or read book Diseases of Sugarcane written by C. Ricaud and published by Elsevier. This book was released on 2012-12-02 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: An extensive volume of Sugarcane Diseases and their World Distribution (Vol. I) was published by Elsevier under the auspices of the International Society of Sugar Cane Technologists in 1961. The present volume was intended to be a new edition of the book, but so many changes were required that a new book was needed. Only three chapters have been kept with slight amendments. The other chapters have been completely re-written. In fact with changes in importance of major diseases, four diseases previously treated have been left out; on the other hand, three new topics have been included in the new book, two new diseases and a chapter on sugarcane quarantine.The first chapter gives a brief account of the anatomy, morphology and physiology of the sugarcane plant to facilitate terminology and especially for a better appreciation of the effect of disease on the growth of the crop. Diseases are extensively treated as in Volume I, with a very good description of their symptoms and variation under different conditions and severity, all well illustrated by black and white figures and in a set of colour plates at the end of the book which will prove of valuable help for identification. The causal agents of the diseases are described giving synonyms, cultural characteristics, isolation methods and present knowledge on race variation, an aspect on which there has been quite an advance in knowledge since Volume I was published. New techniques of diagnosis are also given. Advances in research on the diseases over the last 25 years are well covered and supported by an extensive bibliography at the end of each chapter.The book has been edited by people having first hand experience in the field and in research on these diseases. Authors have been selected from among the most knowledgeable all over the sugar cane world, especially with due regard to the importance of the different diseases in their countries.The book should prove of immense value to those concerned with practical aspects of plant disease control in the field: pathologists, agronomists and crop specialists, including consultants, to those concerned with quarantine of the crop, for university lectures and students, and research scientists.In a pre-publication review D.J. Heinz and S.A. Ferreira of the Hawaiian Sugar Planters' Association stated: ``Much has changed and new information generated since the original version of this book was published in 1961. This new edition incorporates most of it, providing both the laboratory and field sugarcane pathologist a complete and authoritative guide to the major sugarcane diseases of the world. It is the best single book available on sugarcane diseases.''
Download or read book Transport in Plants I written by M.H. Zimmermann and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: When WILHELM RUHLAND developed his plan for an Encyclopedia of Plant Physiol ogy more than three decades ago, biology could still be conveniently subdivided into classical areas. Even within plant physiology, subdivisions were not too difficult to make, and general principles could be covered sufficiently in the two introductory volumes of the Encyclopedia on the physical and chemical basis of cell biology. But the situation changed rapidly even during the 12-year publication period of the Encyclopedia (1955-1967). The new molecular direction of genetics and structural research on biopolymers had an integrating effect on all other biological fields, including plant physiology, and it became increasingly difficult to keep previously distinct areas separated. RUHLAND'S overall plan included 18 volumes and about 22,000 pages. It covered the entire field of plant physiology, in most cases from the very beginning. But, as each volume appeared, it was clear that its content would soon be outdated.
Download or read book Nitrogen Fixation with Non Legumes written by F a Skinner and published by . This book was released on 1989-02-28 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
