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Uso De Fosfato Natural No Cultivo De Arroz Soja E Milho Em Rotacao No Sistema Plantio Direto
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Book Synopsis Uso de fosfato natural no cultivo de arroz, soja e milho em rotação, no sistema plantio direto by : A. da. S. GOMES
Download or read book Uso de fosfato natural no cultivo de arroz, soja e milho em rotação, no sistema plantio direto written by A. da. S. GOMES and published by . This book was released on 2005 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Os solos de várzea do Rio Grande do Sul (RS) apresentam, assim com grande partes dos solos brasileiros, baixa disponibilidade de fósforo (P) para as plantas, requerendo adições frequentes deste nutrientes para que as culturas expressem seu potencial produtivo e se mostrem economicamente viáveis. Nos últimos anos, os fosfatos naturais reativos (FNr) vêm se consolidando como forte alternativas aos fosfatos soluveis (FS), no suprimento de P às plantas.
Book Synopsis Uso de fosfato natural no arroz irrigado cultivado em rotação de culturas, no sistema plantio direto by : A. da. S. GOMES
Download or read book Uso de fosfato natural no arroz irrigado cultivado em rotação de culturas, no sistema plantio direto written by A. da. S. GOMES and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Utilização de calcário para soja e milho em rotação, sob plantio direto e convencional, num Latossolo Vermelho de Cerrado by : Leo Nobre de Miranda
Download or read book Utilização de calcário para soja e milho em rotação, sob plantio direto e convencional, num Latossolo Vermelho de Cerrado written by Leo Nobre de Miranda and published by . This book was released on 2007 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Os solos de Cerrado são ácidos e apresentam baixos teores de nutrientes como o cálcio e o magnésio. Nessa condição de acidez, a toxidez de alumínio prejudica o crescimento das raízes das plantas, reduzindo a sua absorção de nutrientes e água. Torna-se necessário utilizar calcário para elevar o pH do solo, neutralizar o alumínio e fornecer cálcio e magnésio, para viabilizar os sistemas de produção agrícola, seja sob plantio convencional ou direto. Para o cultivo de plantas no sistema de plantio convencional, existem alternativas adequadas de recomendação de calagem e de manejo do calcário nos solos de Cerrado, ocorrendo um efeito benéfico dessa corretivo, por vários cultivos sucessivos. Entretanto para o cultivo de plantas no sistema de plantio direto, que está em grande expansão na região, essas informações ainda são escassas. Dados de outras regiões mostram que, de um modo geral, a utilização de corretivos e fertilizantes sob plantio direto tem sido recomendada comb base nos critérios adotados para o cultivo convencional, o que, nem sempre, tem se mostrado adequado. É necessário buscar informações comb base experimental, para que se possa recomendar adequadamente a utilização eficiente de calcário sob os diferentes sistemas de plantio.
Book Synopsis Efeitos de preparo e rotação de culturas em atributos do solo e na produtividade do feijoeiro irrigado by : A. N. da SILVEIRA NETO
Download or read book Efeitos de preparo e rotação de culturas em atributos do solo e na produtividade do feijoeiro irrigado written by A. N. da SILVEIRA NETO and published by . This book was released on 2004 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atualmente, na região dos cerrados" é crescente a utilização do plantio direto. Este sistema é composto por um conjunto ordenado de ações, cujo resultado almejado é a sustentabilidade agrícola. Entretanto, a utilização contínua do plantio direto, com freqüente insuficiência de palha sobre o solo, aliado às sucessivas adubações superficiais, tem resultado em alguns problemas, tais como, compactação e concentração de nutrientes na superfície do solo, com conseqüente redução no potencial produtivo das culturas. Isto tem feito com que alguns agricultores da região usem, eventualmente, o arado para ajudar na descompactação. Em razão destes problemas detectados, o objetivo deste trabalho foi estudar os efeitos de dois sistemas de preparo do solo e quatro rotações de culturas sobre os atributos físicos e químicos e sobre a produtividade do feijoeiro irrigado, no inverno. O experimento foi conduzido por cinco anos consecutivos, durante os quais se efetuaram dez cultivos, em um Latossolo Vermelho distrófico, em Santo Antônio de Goiás, GO. Utilizou-se o delineamento inteiramente casualizado, com quatro repetições e esquema fatorial2 x 4, em parcelas subdivididas. As parcelas foram constituídas pelos sistemas de preparo: (PI) plantio direto seguido anualmente de um preparo com arado e (P2) plantio direto contínuos e as subparcelas, pelas rotações: (R1 milheto - feijão - milheto - feijão -arroz - feijão - milheto - feijão - milheto - feijão; (R2) milheto - feijão - soja - feijão - arroz - feijão - milheto - feijão - soja - feijão; (R3) milheto - feijão - milho - feijão -arroz - feijão - milheto - feijão - milho - feijão e R4) soja - feijão - milho - feijão -arroz - feijão - soja - feijão - milho - feijão. O plantio direto contínuo contribuiu para maiores valores de pH, Ca, Mg, P, K e matéria orgânica (M.O.) na camada superficial. Ademais, diminuiu a macroporosidade e aumentou a densidade do solo. Isto contribuiu para que, nos primeiros anos, a produtividade acumulada do feijoeiro tenha sido decrescente no plantio direto contínuo em relação à obtida com o plantio direto seguido anualmente de um preparo com arado. Esta tendência foi menos acentuada e revertida mais rapidamente a partir do terceiro ano de cultivo, nas rotações que incluíam milheto. Assim, na média dos cinco anos de cultivo, a produtividade do feijoeiro sob plantio direto contínuo foi 13% superior à obtida no plantio direto seguido anualmente de um preparo com arado. Entre as rotações, a menor produtividade do feijoeiro foi verificada na que incluiu, conjuntamente, milheto e milho. Presently the utilization of no-tillage system increasing in the Cerrados Region. This system is formed by a sequenced set of activities directed to agriculture sustainability. Continuous no-tillage, however, with frequent lack of straw over the soil in addition to successive superficial fertilizer applications has resulted in some problems such as compaction and superficial nutrient concentration decreasing crop potential yield. Consequently, some farmers have been using moldboard plow to avoid compaction. The objective of this study was to evaluate the effects of two soil preparation procedures and four crop rotation systems over soil chemical and physical attributes as well as on yield of irrigated common bean planted in the winter. The experiment was conducted for five consecutive years with ten crop seasons in a Dystrophic Red Latosol in Santo Antônio de Goiás; GO in a completely randomized design with four replications arranged in a 2 x 4 factorial split plot. Preparation systems were assigned to plots: (P1) no-tillage followed by plowing and (P2) continuous no-tillage; and crop rotation was assigned to subplots: (R1) millet - common bean - millet - common bean - rice - common bean - millet - common bean - millet - common bean, (R2) millet - common bean - soybean - common bean - rice - common bean - millet -common bean - com - common bean, (R3) millet - common bean - millet - common bean -rice - common bean - com - common bean, and (R4) soybean - common bean - com -common bean - rice - common bean - soybean - common bean com - common bean. Continuous no-tillage contributed to higher values of pH, Ca, Mg, P, K and organic matter in soil surface layer. In addition, it decreased macro porosity and increased soil bulk density. Thus, during the first years cumulated common bean yield decreased with continuous no-tillage in relation to that obtained with no-tillage followed by plowing. This tendency was less strong and reversed more rapidly after the third cultivation year, in crop rotations using millet. So, in average of five cropping years, common bean yield under no-tillage was 13% higher than yield obtained when no-tillage was followed by plowing. Among the rotation systems, the lowest common bean yield was obtained in the rotation that included millet and corn.
Author :Raphael A. Viscarra Rossel Publisher :Springer Science & Business Media ISBN 13 :9048188598 Total Pages :440 pages Book Rating :4.0/5 (481 download)
Book Synopsis Proximal Soil Sensing by : Raphael A. Viscarra Rossel
Download or read book Proximal Soil Sensing written by Raphael A. Viscarra Rossel and published by Springer Science & Business Media. This book was released on 2010-07-25 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on developments in Proximal Soil Sensing (PSS) and high resolution digital soil mapping. PSS has become a multidisciplinary area of study that aims to develop field-based techniques for collecting information on the soil from close by, or within, the soil. Amongst others, PSS involves the use of optical, geophysical, electrochemical, mathematical and statistical methods. This volume, suitable for undergraduate course material and postgraduate research, brings together ideas and examples from those developing and using proximal sensors and high resolution digital soil maps for applications such as precision agriculture, soil contamination, archaeology, peri-urban design and high land-value applications, where there is a particular need for high spatial resolution information. The book in particular covers soil sensor sampling, proximal soil sensor development and use, sensor calibrations, prediction methods for large data sets, applications of proximal soil sensing, and high-resolution digital soil mapping. Key themes: soil sensor sampling – soil sensor calibrations – spatial prediction methods – reflectance spectroscopy – electromagnetic induction and electrical resistivity – radar and gamma radiometrics – multi-sensor platforms – high resolution digital soil mapping - applications Raphael A. Viscarra Rossel is a scientist at the Commonwealth Scientific and Industrial Research Organisation (CSIRO) of Australia. Alex McBratney is Pro-Dean and Professor of Soil Science in the Faculty of Agriculture Food & Natural Resources at the University of Sydney in Australia. Budiman Minasny is a Senior Research Fellow in the Faculty of Agriculture Food & Natural Resources at the University of Sydney in Australia.
Book Synopsis The Ecology of Trees in the Tropical Rain Forest by : I. M. Turner
Download or read book The Ecology of Trees in the Tropical Rain Forest written by I. M. Turner and published by Cambridge University Press. This book was released on 2001-07-05 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our knowledge of the ecology of tropical rain-forest trees is limited, yet a good understanding of the trees is essential to unravelling the workings of the forest itself. This book aims to summarise contemporary understanding of the ecology of tropical rain-forest trees, with particular emphasis on comparative ecology.
Book Synopsis Micronutrients in Plant Physiology by : Ernest A. Kirkby
Download or read book Micronutrients in Plant Physiology written by Ernest A. Kirkby and published by . This book was released on 2004 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Biogas Handbook by : Arthur Wellinger
Download or read book The Biogas Handbook written by Arthur Wellinger and published by Elsevier. This book was released on 2013-02-19 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: With increasing pressures to utilize wastes effectively and sustainably, biogas production represents one of the most important routes towards reaching renewable energy targets. This comprehensive reference on the development and deployment of biogas supply chains and technology reviews the role of biogas in the energy mix and outlines the range of biomass and waste resources for biogas production. Contributors provide detailed coverage of anaerobic digestion for the production of biogas and review the utilization of biogas for various applications. They consider all aspects in the biogas production chain from the origin of the biomass feedstocks, feedstock selection and preparation, the anaerobic digestion process, biogas plant equipment design and operation, through to utilization of the biogas for energy production and the residue, the digestate, which can be used as a biofertilizer. The book also addresses biogas utilization, and explores environmental impacts and commercial market applications. Table of Contents: Biogas as an energy option: An overview Part 1 Biomass resources, feedstock treatment and biogas production: Biomass resources for biogas production; Analysis and characterisation of biogas feedstocks; Storage and pre-treatment of substrates for biogas production; Fundamental science and engineering of the anaerobic digestion process for biogas production; Optimisation of biogas yields from anaerobic digestion by feedstock type; Anaerobic digestion as a key technology for biomass valorisation: Roles and contribution to the energy balance of biofuel chains Part 2 Plant design, engineering, process optimisation and digestate utilization: Design and engineering of biogas plants; Energy flows in biogas plants: Analysis and implications for plant design; Process control in biogas plants; Methane emissions in biogas production; Biogas digestate quality and utilization; Land application of digestate Part 3 Biogas utilisation: international experience and best practice: Biogas cleaning; Biogas up-grading to biomethane; Biomethane injection into natural gas networks; Generation of heat and power from biogas for stationery applications: Boilers, gas engines and turbines, combined heat and power (CHP) plants and fuel cells; Biomethane for transport applications; Market development and certification schemes for biomethane
Book Synopsis Anaerobic Reactors by : Carlos Augustos de Lemos Chernicharo
Download or read book Anaerobic Reactors written by Carlos Augustos de Lemos Chernicharo and published by IWA Publishing. This book was released on 2007-03-30 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic Reactors is the forth volume in the series Biological Wastewater Treatment. The fundamentals of anaerobic treatment are presented in detail, including its applicability, microbiology, biochemistry and main reactor configurations. Two reactor types are analysed in more detail, namely anaerobic filters and especially UASB (upflow anaerobic sludge blanket) reactors. Particular attention is also devoted to the post-treatment of the effluents from the anaerobic reactors. The book presents in a clear and informative way the main concepts, working principles, expected removal efficiencies, design criteria, design examples, construction aspects and operational guidelines for anaerobic reactors. About the series: The series is based on a highly acclaimed set of best selling textbooks. This international version is comprised by six textbooks giving a state-of-the-art presentation of the science and technology of biological wastewater treatment. Other titles in the series are: Volume 1: Waste Stabilisation Ponds; Volume 2: Basic Principles of Wastewater Treatment; Volume 3: Waste Stabilization Ponds; Volume 5: Activated Sludge and Aerobic Biofilm Reactors; Volume 6: Sludge Treatment and Disposal
Book Synopsis The Physiology of Vegetable Crops, 2nd Edition by : Hans Christian Wien
Download or read book The Physiology of Vegetable Crops, 2nd Edition written by Hans Christian Wien and published by CABI. This book was released on 2020-05-01 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely updated and revised, this bestselling book continues to explain the growth and developmental processes involved in the formation of vegetables. Since the publication of the successful first edition significant discoveries, particularly in the area of molecular biology, have deepened and broadened our knowledge and understanding of these processes. This new edition brings the topic up-to-date and is presented over two sections: the first provides general knowledge on germination, transplanting, flowering, the effects of stress and modelling, whilst the second section details the physiology of specific crops or crop groups.
Book Synopsis Soil Management for Sustainability by : R. Lal
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
Download or read book MetaWin written by Michael S. Rosenberg and published by . This book was released on 1997 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manual Nitrogen Control written by and published by . This book was released on 1993 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Principles of Plant Nutrition by : Konrad Mengel (etc)
Download or read book Principles of Plant Nutrition written by Konrad Mengel (etc) and published by Springer Science & Business Media. This book was released on 2001-07-31 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant nutrition; The soil as a plant nutrient medium; Nutrient uptake and assimilation; Plant water relationships; Plant growth and crop production; Fertilizer application; Nitrogen; Sulphur; Phosphorus; Potassium; Calcium; Magnesium; Iron; Manganese; Zinc; Copper; Molybdenum; Boron; Further elements of importance; Elements with more toxic effects.
Book Synopsis Assessment of Soil Nutrient Balance by : Rabindra N. Roy
Download or read book Assessment of Soil Nutrient Balance written by Rabindra N. Roy and published by Food & Agriculture Org.. This book was released on 2003 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nutrient-balance assessments are valuable tools for delineating the consequences of farming on soil fertility. Various approaches and methods for different situations have been used in the past. This bulletin presents a state-of-the-art review of nutrient balance studies. It brings out the evolution of the approaches and methods, provides for comparisons among them, features the improvements made, and highlights remaining issues. This analysis will be useful in further development of the assessment methodologies as reliable tools for devising time-scale soil fertility management interventions.
Book Synopsis Meta Win 2.0 by : Michael S. Rosenberg
Download or read book Meta Win 2.0 written by Michael S. Rosenberg and published by Sinauer Associates Incorporated. This book was released on 1999-10-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: MetaWin, first published in 1997, allows the user to easily carry out all common meta-analysis calculations on multiple independent studies from a wide variety of disciplines, including medicine, ecology, and the social sciences. Version 2.0 allows users to calculate any of six different effect sizes (vs. two, as in Version 1.0) from their data, and includes its own spreadsheet editor and statistical calculator. The analysis routine is greatly expanded, and graphics (e.g., funnel plots, histograms, etc.) have been added.
Author :American Society of Civil Engineers. Technical Committee on Irrigation Water Requirements Publisher : ISBN 13 : Total Pages :236 pages Book Rating :4.3/5 (91 download)
Book Synopsis Consumptive Use of Water and Irrigation Water Requirements by : American Society of Civil Engineers. Technical Committee on Irrigation Water Requirements
Download or read book Consumptive Use of Water and Irrigation Water Requirements written by American Society of Civil Engineers. Technical Committee on Irrigation Water Requirements and published by . This book was released on 1973 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
