Diseño de sistema de control de optimización ambiental para cultivo hidropónico PDF Download

Author: Giancarlo Daraviña Peña
Publisher:
ISBN:
Category :
Languages : es
Pages :

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Introducción:La hidroponía es una técnica o método utilizado para cultivar plantas usando soluciones minerales sin suelo agrícola. Las raíces reciben una solución nutritiva equilibrada disuelta en agua con todos los elementos esenciales para el crecimiento de la planta, pueden crecer en una solución única y en medios inertes como arena lavada y perlita o grava. En Colombia el control de variables ambientales para un cultivo suele ser complicado puesto que las condiciones ambientales varían mucho así que la mayoría de los cultivos suelen presentar pérdidas, esto pasa también con los nutriente dado que en las tierras donde se cultivan son limitados y requieren aplicación de abonos para que los cultivos puedan avanzar en la etapa de desarrollo...

Author: Francisco Roberto Castaneda del Cid
Publisher:
ISBN:
Category :
Languages : es
Pages : 118

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La dieta diaria de grupos poblacionales ubicados en areas marginales tanto en el area urbana como en el area marginal no incluye en general a las hortalizas, las cuales son una rica fuente de vitaminas y minerales. Ademas, las hortalizas pueden cultivarse en forma intensiva, efectiva y eficiente, el cutlivo de hortalizas no solo puede mejorar la disponibilidad y acceso de los alimentos, sino tambien ser una fuente de ingresos. La hidroponia ofrece una alternativa para el cultivo de estos vegetales. La finalidad de este trabajo es: disenar y evaluar un sistema de cultivo hidroponico para la produccion de hortalizas a nivel domestico, que sea viable tecnica y economicamente, para ser implementado por estas personas, sin necesidad de que cuenten con conocimientos de agricultura, quimica o matematicas. Los cultivos hidroponicos o hidroponia, como se conoce a esta tecnologia, no es mas que la produccion de plantas sin hacer uso de la tierra o suelo, utilizando como medio de crecimiento de la raiz un material inerte llamado sustrato al cual se le agregan, en forma de solucion, todos los nutrientes necesarios para el desarrollo de los vegetales. El sistema disenado se baso en experiencias previas realizadas en otros paises como Nicaragua, Costa Rica, Colombia y Chile, con adaptaciones al ambito socioeconomico de Guatemala. Para el diseno de este sistema hidroponico, el trabajo se dividio en cinco etapas: Primera etapa: analisis de sustratos. Segunda etapa: solucion de nutrientes hidroponicos. Tercera etapa: sistemas de cultivo hidroponico. Cuarta etapa: efectos del sustrato y la concentracion de la solucion de nutrientes, sobre el rendimiento y calidad de los cultivos. Quinta etapa: analisis economico de los cultivos hidroponicos. En la primera etapa se realizo un sondeo de los posibles materiales existentes en la ciudad de Guatemala, que podian servir como sustratos, luego de descartar varios de ellos se determino que la arena de rio, la piedra pomez y la cascarilla de arroz, eran convenientes. Luego se realizaron mezclas de estos tres sustratos para hacerles analisis fisicos y quimicos llegandose a encontrar tres sustratos con distintas cualidades de los cuales servirian para posteriores analisis, los sustratos fueron los siguientes: S1' Arena de rio, S2' Cascarilla de arroz, S3' Arena de rio (25 por ciento) + Piedra pomez (25 por ciento) + Cascarilla de arroz (50 por ciento) ... (AU).

Author: Piet Lens
Publisher: IWA Publishing
ISBN: 1843391007
Category : Science
Languages : en
Pages : 545

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Soil and Sediment Remediation discusses in detail a whole set of remediative technologies currently available to minimise their impact. Technologies for the treatment of soils and sediments in-situ (landfarming, bioscreens, bioventing, nutrient injection, phytoremediation) and ex-situ (landfarming, bio-heap treatment, soil suspension reactor) will be discussed. The microbiological, process technological and socio-economical aspects of these technologies will be addressed. Special attention will be given to novel biotechnological processes that utilise sulfur cycle conversions, e.g. sulfur and heavy metal removal from soils. Also the potential of phytoremediation will be highlighted. In addition, treatment schemes for the clean-up of polluted megasites, e.g. harbours and Manufactured Gaswork Plants (MGP), will be elaborated. The aim of Soil and Sediment Remediation is to introduce the reader in: the biogeochemical characteristics of soil and sediments- new techniques to study soil/sediment processes (molecular probes, microelectrodes, NMR) clean up technologies for soils polluted with organic (PAH, NAPL, solvents) or inorganic (heavy metals) pollutants- preventative and remediative strategies and technologies available in environmental engineering novel process applications and bioreactor designs for bioremediation the impact of soil pollution on society and its economic importance.

Author: Paul V. Nelson
Publisher:
ISBN:
Category : Business & Economics
Languages : en
Pages : 720

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"Exceptionally comprehensive yet accessible it provides detailed, step-by-step instructions in layman's terms for all aspects of the business, from the physical facilities, to the day-to-day operations, to business management and marketing. Specific chapter topics cover greenhouse construction, heating, and cooling; environmental control systems; root substrate; root substrate pasteurization; watering; fertilization; alternative cropping system; carbon dioxide fertilization; light and temperature; chemical growth regulation; insect control; disease control; postproduction quality; marketing; and business management. For individuals entering the greenhouse business." -- Amazon.com viewed December 8, 2020.

Author: Christine E. Gudorf
Publisher: Georgetown University Press
ISBN: 1589016858
Category : Philosophy
Languages : en
Pages : 329

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Book Description
In this expanded and revised edition of a fresh and original case-study textbook on environmental ethics, Christine Gudorf and James Huchingson continue to explore the line that separates the current state of the environment from what it should be in the future. Boundaries begins with a lucid overview of the field, highlighting the key developments and theories in the environmental movement. Specific cases offer a rich and diverse range of situations from around the globe, from saving the forests of Java and the use of pesticides in developing countries to restoring degraded ecosystems in Nebraska. With an emphasis on the concrete circumstances of particular localities, the studies continue to focus on the dilemmas and struggles of individuals and communities who face daunting decisions with serious consequences. This second edition features extensive updates and revisions, along with four new cases: one on water privatization, one on governmental efforts to mitigate global climate change, and two on the obstacles that teachers of environmental ethics encounter in the classroom. Boundaries also includes an appendix for teachers that describes how to use the cases in the classroom.

Author: Carlos Crovetto Lamarca
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 266

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Author: Lincoln Taiz
Publisher: Sinauer Associates Incorporated
ISBN: 9780878938667
Category : Science
Languages : en
Pages : 782

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"Plant Physiology, Fifth Edition continues to set the standard for textbooks in the field, making plant physiology accessible to virtually every student. Authors Lincoln Taiz and Eduardo Zeiger have again collaborated with a stellar group of contributing plant biologists to produce a current and authoritative volume that incorporates all the latest findings. Changes for the new edition include: A newly updated chapter (Chapter 1) on Plant Cells, including new information on the endomembrane system, the cytoskeleton, and the cell cycle, A new chapter (Chapter 2) on Genome Structure and Gene Expression, A new chapter (Chapter 14) on Signal Transduction. Updates on recent developments in the light reactions and the biochemistry of photosynthesis, respiration, ion transport, and water relations. In the phytochrome, blue-light, hormone and development chapters, new information about signaling pathways, regulatory mechanisms, and agricultural applications. Coverage of recent breakthroughs on the control of flowering. Three new Appendices on Concepts of Bioenergetics, Plant Kinematics, and Hormone Biosynthetic Pathways As with prior editions, the Fifth Edition is accompanied by a robust Companion Website. New material has been added here as well, including new Web Topics and Web Essays."--P. 4 de la couv.

Author: Durgesh Kumar Tripathi
Publisher: CRC Press
ISBN: 1498739504
Category : Science
Languages : en
Pages : 399

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Book Description
In the present era, rapid industrialization and urbanization has resulted in unwanted physiological, chemical, and biological changes in the environment that have harmful effects on crop quality and productivity. This situation is further worsened by the growing demand for food due to an ever increasing population. This forces plant scientists and agronomists to look forward for alternative strategies to enhance crop production and produce safer, healthier foods. Biotic and abiotic stresses are major constraints to crop productivity and have become an important challenge to agricultural scientists and agronomists due to the fact that both stress factors considerably reduce agriculture production worldwide per year. Silicon has various effects on plant growth and development, as well as crop yields. It increases photosynthetic activity, creates better disease resistance, reduces heavy metal toxicity, improves nutrient imbalance, and enhances drought tolerance. Silicon in Plants: Advances and Future Prospects presents the beneficial effects of silicon in improving productivity in plants and enhancing the capacity of plants to resist stresses from environmental factors. It compiles recent advances made worldwide in different leading laboratories concerning the role of silicon in plant biology in order to make these outcomes easily accessible to academicians, researchers, industrialists, and students. Nineteen chapters summarize information regarding the role of silicon in plants, their growth and development, physiological and molecular responses, and responses against the various abiotic stresses.

Author: United States. Office of Foreign Agricultural Relations
Publisher:
ISBN:
Category : Dairying
Languages : en
Pages : 70

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Author: R. A. Olson
Publisher:
ISBN: 9780891187523
Category : Fertilizer industry
Languages : en
Pages : 611

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The role of rertilizer in agricultural development; The world fertilizer market; Prescribing soil and crop nutriet needs; economics of fertilizer use; Line fertilizer-plant interactions in acid soils; fertilizer phosporus interactions in alkaline soils; plant nutrient beahavior in floodes soil; nitrogen production and use; Productio, marketing, and phosphorus fertilizers; production, marketing , and use of potassium fertilizers; production; marketing and use of sulfur products; Production, marketing, and use of solid, solution, and suspension fertilizers; Production, marketing, and use of other secondary and micronutrient fertilizers; Slow-release and amended fertilizers; Fertilizer combinations with herbicides or insecticides; Fertilizer use in relation to surface and ground water pollution; Faed and food quality in relation to fertilizer use; Human and animal wastes as fertilizers.