Download or read book PERDIDA DE NUTRIENTES DEL SUELO POR EFECTO DE LA EROSION HIDRICA BAJO DIFERENTES SISTEMAS DE SIEMBREA EN EL CULTIVO DE AVENA written by WILFRIDO V NARVAEZ R and published by INIAP Archivo Historico. This book was released on with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Perdida de Nutrientes del Suelo por Efecto de la Erosion Hidrica written by and published by INIAP Archivo Historico. This book was released on with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book La erosi n h drica del suelo en cultivos agr colas written by José de Jesus Huerta O. and published by Editorial Academica Espanola. This book was released on 2015-01-19 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: En la presente obra se expone el efecto reductor de la cobertura vegetal y de raices de cultivos agricolas (maiz, frijol, calabacita y avena) sobre el proceso erosivo del suelo y agua en parcelas experimentales de temporal. En estas fue considerado el manejo convencional de suelo y la preparacion del terreno para la siembra bajo lluvia simulada. Los resultados obtenidos confirman una relacion exponencial negativa entre la cobertura vegetal y la perdida de suelo; observandose que el efecto de raices es menos eficiente para reducir el proceso erosivo. Los mayores registros de perdida de suelo promedio fueron obtenidos en el cultivo de maiz y los menores para avena. Todos los cultivos mostraron una relacion negativa del escurrimiento superficial con respecto al aumento de cobertura vegetal; a diferencia del desarrollo de las raices, del que solamente el maiz mostro un ligero efecto en reducir el escurrimiento superficial.
Download or read book Evaluaci n de la erosion h drica en parcelas experimentales en campos agr colas de secano mediterraneo written by and published by . This book was released on 2013 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book La degradaci n de los suelos por erosi n h drica m todos de estimaci n written by Javier Almorox Alonso and published by EDITUM. This book was released on 2011-01-20 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: La degradación de la tierra está ocurriendo en todo el mundo y en casi todos los ecosistemas, este proceso tiene graves consecuencias medioambientales y sobre el potencial biológico y económico de la tierra. Uno de los mecanismos más importantes de la degradación de la tierra es la erosión del suelo. El suelo es un recurso natural único, frágil, imprescindible para la vegetación, para la sostenibilidad global y la calidad de vida; sin este recurso no puede haber prosperidad ni progreso. La erosión hídrica es el eje central de desarrollo de la presente publicación la cual tiene por objeto sintetizar algunos conceptos teóricos sobre la degradación y erosión de suelos, para luego avanzar sobre los modelos de estimación de la erosión hídrica.
Download or read book Estudio de la erosi n h drica y estrategias de control written by Napoleón Fernández de la Paz and published by . This book was released on 1995 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Banana Genomics and Transgenic Approaches for Genetic Improvement written by Sukhada Mohandas and published by Springer. This book was released on 2016-09-08 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bananas and plantains are among the most important food and cash crops in the world. They are cultivated in more than 135 countries, across the tropics and subtropics, with an annual global production of ca. 130 million metric tonnes. Though bananas are one of the most important components of food security in many developing countries, banana production is threatened by both abiotic and biotic stresses. These include a wide range of diseases and pests, such as bunchy top virus, burrowing nematodes, black Sigatoka or black leaf streak, Fusarium wilt, etc. In recent years, considerable progress has been made and several biotechnological and genomic tools have been employed to help understand and unravel the mysterious banana genome. Molecular and genomic studies have helped to decipher the Musa genome and its evolution. Genetic linkage map and whole genome sequencing of both Musa acuminata and Musa balbisiana (progenitors of cultivated banana) have completely changed the way of thinking and the approach on banana crop improvement. Whole-genome sequencing has helped to improve the selection of quantitative traits such as yield, as well as the selection of optimal parents for developing required hybrids in breeding programs. Gene isolation and the analysis of mutants have helped in the characterization of genes of agronomic value and the associated regulatory sequences. With the advent of molecular markers and new statistical tools, it is now possible to measure the diversity, identify genes and useful alleles linked to important agronomic traits. Further these alleles can be incorporated into cultivars through marker assisted selection or through transgenic approach. Transgenic approaches are potential tools for direct transfer of these genes into popular cultivars, which are generally not amenable for conventional breeding techniques, in specific with crops such as bananas which are sterile, triploid and heterozygous thereby making it difficult to reconstruct the recurrent genotypes in banana. Transgenic techniques thus have helped overcome the difficulty of working with sterile, triploid banana crop. In the last five years, enormous amount of new information and techniques have been generated for banana. A comprehensive book entitled “Banana: Genomics and Transgenic Approaches for Genetic improvement” on banana genomics, latest transgenic technologies and tools available for improved crop development in banana will address all these requirements.
Download or read book Soils of Arid Regions written by Harold Ernest Dregne and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Global Plan of Action for the Conservation Sustainable Use and Development of Forest Genetic Resources written by Commission on Genetic Resources for Food and Agriculture and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I. Introduction -- Part II. Strategic priorities for action. Priority area 1 : Improving the availability of, and access to, information on FGR -- Priority area 2 : In situ and ex situ conservation of FGR -- Priority area 3 : Sustainable use, development and management of FGR -- Priority area 4 : Policies, institutions and capacity-building
Download or read book Humedales para Tratamiento written by Gabriela Dotro and published by IWA Publishing. This book was released on 2021-02-15 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Humedales para tratamiento es el séptimo volumen de la serie “Tratamiento biológico de aguas residuales” (en inglés “Biological Waste Water Treatment Series”), que provee una presentación de vanguardia sobre la ciencia y tecnología del tratamiento de aguas residuales. Los principales tipos de sistemas de humedales son tratados en este volumen, a saber: (i) Humedales de flujo subsuperficial horizontal, (ii) Humedales de flujo vertical; (iii) Humedales de flujo vertical tipo francés; (iv) Humedales intensificados; (v) Humedales de flujo libre; (vi) otras aplicaciones de los humedales para tratamiento. El libro presenta en forma clara y didáctica, los conceptos básicos, los principios de la tecnología, desempeños esperados, criterios de diseño, ejemplos de diseño, aspectos constructivos y guías para la operación. El libro ha sido escrito en su versión inglesa, y traducido al castellano, por un equipo internacional de expertos en el campo de los humedales para tratamiento.
Download or read book Therapeutic Landscapes written by Allison Williams and published by Routledge. This book was released on 2017-05-15 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: The therapeutic landscape concept, first introduced early in the 1990s, has been widely employed in health/medical geography and gaining momentum in various health-related disciplines. This is the first book published in several years, and provides an introduction to the concept and its applications. Written by health/medical geographers and anthropologists, it addresses contemporary applications in the natural and built environments; for special populations, such as substance abusers; and in health care sites, a new and evolving area - and provides an array of critiques or contestations of the concept and its various applications. The conclusion of the work provides a critical evaluation of the development and progress of the concept to date, signposting the likely avenues for future investigation.
Download or read book Historia General Y Natural de Las Indias written by José Spain and published by . This book was released on 1851 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historia General Y Natural De Las Indias by Jos� Spain, first published in 1851, is a rare manuscript, the original residing in one of the great libraries of the world. This book is a reproduction of that original, which has been scanned and cleaned by state-of-the-art publishing tools for better readability and enhanced appreciation. Restoration Editors' mission is to bring long out of print manuscripts back to life. Some smudges, annotations or unclear text may still exist, due to permanent damage to the original work. We believe the literary significance of the text justifies offering this reproduction, allowing a new generation to appreciate it.
Download or read book Crop Improvement written by Khalid Rehman Hakeem and published by Springer Science & Business Media. This book was released on 2013-06-13 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The improvement of crop species has been a basic pursuit since cultivation began thousands of years ago. To feed an ever increasing world population will require a great increase in food production. Wheat, corn, rice, potato and few others are expected to lead as the most important crops in the world. Enormous efforts are made all over the world to document as well as use these resources. Everybody knows that the introgression of genes in wheat provided the foundation for the “Green Revolution”. Later also demonstrated the great impact that genetic resources have on production. Several factors are contributing to high plant performance under different environmental conditions, therefore an effective and complementary use of all available technological tools and resources is needed to meet the challenge.
Download or read book Erosion Transport and Deposition Processes written by H.-R. Bork and published by . This book was released on 1991 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Symposium dedicated to Heinrich Rohdenburg was held in August and September 1989 at Königslutter, FRG. The papers contained in this volume are a selection of those presented at the symposium. Reflecting the wide range of geomorphological, hydrological, pedological, and geoecological research fields of Heiner Rohdenburg the papers of this Catena Supplement vary from general diagnoses and considerations concerning the evolution of landscapes, process studies in the laboratory and in the field to process-orientated models. Honouring the extraordinary, ecosystem-oriented work of Heiner Rohdenburg, the papers present the state of the art, indicating many directions for future research.
Download or read book Soil Management for Sustainability written by R. Lal and published by . This book was released on 1991 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book manuscripts presented originally at a World Association of Soil and Water Conservation conference held in 1989 are collected. Topics include basic processes (e.g. soil structure, soil erosion, soil compaction); management options (e.g. conservation tillage); policy issues and priorities
