Atributos De Solo E Produtividade De Culturas Em Sistemas De Manejo Conduzidos Por Dezesseis Anos

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Atributos de solo e produtividade de culturas em sistemas de manejo conduzidos por dezesseis anos

Author : LUIS CARLOS HERNANI Hernani
Publisher :
ISBN 13 :
Total Pages : 61 pages
Book Rating : 4.:/5 (78 download)

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Book Synopsis Atributos de solo e produtividade de culturas em sistemas de manejo conduzidos por dezesseis anos by : LUIS CARLOS HERNANI Hernani

Download or read book Atributos de solo e produtividade de culturas em sistemas de manejo conduzidos por dezesseis anos written by LUIS CARLOS HERNANI Hernani and published by . This book was released on 2009 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: Para identificar alternativas ao manejo intensivo com grades de discos, avaliaram-se, entre 1987 e 2003, efeitos de sistemas de manejo do solo na produtividade de soja, milho e trigo e em atributos de um Latossolo Vermelho Distroférrico muito argiloso, localizado na sede da Embrapa Agropecuária Oeste, em Dourados, MS. Os tratamentos entre 1987 e 1994 constaram de: a) sistemas de preparo de solo no verão (SP): PD - semeadura direta; ES - escarificação + gradagens niveladoras; GP - gradagem aradora + gradagens niveladoras e SI - gradagem aradora + aração com arado de aivecas + gradagens niveladoras; b) sistemas de preparo no inverno: ES, GP e PD e c) cultura de inverno: trigo e aveia preta. Em 1994, o PD passou a ser o único sistema de preparo usado no inverno e a sucessão aveia preta/soja foi substituída pela rotação nabo forrageiro/milho - aveia preta/soja - trigo/soja (CR); mantendo-se os demais tratamentos, a sequência trigo/soja passou a ser denominada tratamento sem rotação (SR). Em 2000, o sistema CR foi modificado para aveia preta + nabo forrageiro/milho - aveia preta + nabo forrageiro/soja - trigo/soja, mantendo-se os demais tratamentos. O preparo de solo no verão foi realizado em faixas dispostas em nível no terreno; no inverno o preparo foi em faixas, no sentido transversal ao das faixas do preparo no verão; as culturas foram conduzidas sempre em faixas e em nível. Determinaram-se a produtividade de grãos de soja, milho e trigo. De amostras compostas das camadas 0-5 cm, 5-10 cm e 10-20 cm do solo avaliaram-se pH, Al, K, P e matéria orgânica (MO), em 1993, 1996 e 2003 e, em amostras indeformadas dessas mesmas camadas, mediram-se densidade (Ds), macro (Ma), micro (Mi) e porosidade total (Pt), em 1993 e 1996. A estabilidade de agregados em água e o diâmetro médio ponderado (DMP) foram determinados a partir de monolitos da camada 0-10 cm, obtidos em 1996. Os dados foram submetidos à análise de variância e as médias foram comparadas pelo teste de Tukey (p

Atributos físicos e químicos de um latossolo vermelho e produtividade de culturas, em função de manejo de solo e de rotação de culturas

Author : SILVIO TULIO SPERA Spera
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (71 download)

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Book Synopsis Atributos físicos e químicos de um latossolo vermelho e produtividade de culturas, em função de manejo de solo e de rotação de culturas by : SILVIO TULIO SPERA Spera

Download or read book Atributos físicos e químicos de um latossolo vermelho e produtividade de culturas, em função de manejo de solo e de rotação de culturas written by SILVIO TULIO SPERA Spera and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Manejo do solo e suas influências em atributos químicos e microbiológicos do solo

Author : E. R. P. Lourente
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.:/5 (78 download)

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Book Synopsis Manejo do solo e suas influências em atributos químicos e microbiológicos do solo by : E. R. P. Lourente

Download or read book Manejo do solo e suas influências em atributos químicos e microbiológicos do solo written by E. R. P. Lourente and published by . This book was released on 2007 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sistemas de manejo com rotação de culturas e relações com atributos químicos e microbiológicos do olo e produtividade do milho; Caractericação da área experimental e manejo adotado; Sistemas de manejo avaliads e procedimento estatístico; Determinações químicas e microbiológicas; Estudo da correlação de Pearson; Estado nutricional das culturas de inverno e verão e produtividade do milho; Correlações canônicas entre atributos químicos e microbiológicos do solo.

Impacto de sistemas de integração lavoura-pecuária na qualidade física do solo

Author : GLENIO GUIMARÃES SANTOS Santos
Publisher :
ISBN 13 :
Total Pages : 244 pages
Book Rating : 4.:/5 (78 download)

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Book Synopsis Impacto de sistemas de integração lavoura-pecuária na qualidade física do solo by : GLENIO GUIMARÃES SANTOS Santos

Download or read book Impacto de sistemas de integração lavoura-pecuária na qualidade física do solo written by GLENIO GUIMARÃES SANTOS Santos and published by . This book was released on 2010 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Na medida em que se intensifica o uso agrícola, os atributos físico-hídricos do solo sofrem alterações, geralmente adversas ao crescimento vegetal e essas modificações ficam mais nítidas, quando os sistemas de uso do solo são comparados com o estado do solo ainda sob vegetação natural do cerrado. A utilização do sistema de integração de lavoura-pecuária pode acarretar mudanças acentuadas nos atributos físicos, químicos e biológicos do solo e podem afetar o desenvolvimento e, consequentemente, a produção das culturas que venham em sequencia ao pastejo. Este estudo teve como objetivo geral analisar quantitativamente, por meio de atributos físico-hídricos, as principais alterações na qualidade do solo, decorrentes da utilização do longo prazo em sistema de integração de lavoura-pecuária, conduzidos em ambiente de cerrado. O estudo foi realizado a partir da abertura de trincheiras na Fazenda Capivara, Embrapa Arroz e Feijão, e em área particular, ao lado da propriedade da Embrapa, onde amostras de solo foram coletadas nas profundidades: 2,5-7,5 cm, 12,5-17,5 cm, 22,5-27,5 cm, 72,5-77,5 cm e 142,5-147,5 cm. As avaliações foram realizadas em seis sistemas, com área media de 13,5 hectares cada, sendo caracterizadas pelo seu uso atual como: sistema P1 (pastagem de Encachiaria brizantha com quatro ano de uso); sistemas P2 (pastagem de Encachiaria brizantha com dois ano de uso); sistemas P3 (pastagem de Encachiaria brizantha com três anos de uso); sistema C1 (soja sob plantio direto); sistema C2 (arroz sob plantio convencional) e; C3 (milho + Encachiaria brizantha sob plantio direto). Foi também usada uma sétima área de cinco hectares, mantida sob pastagem continua de Encachiaria decumbens, por 19 anos após a implantação designada por CP e uma oitava área de cerrado nativo chamado CE. De forma geral, os atributos físicos-hídricos e dentre eles as curvas de retenção de agua do solo e os respectivos valores do índice-S são alterados, quando submetidos ao manejo com implementos agrícolas e ao pastoreio animal, se comparados a área de cerrado nativo, considerada área de referencia neste estudo. O uso do índice-S para avaliar a quantidade física do solo, do ponto de vista de sua estrutura de qualidade por meio da curva de retenção de agua pode ser uma opção viável, uma vez que não tem algumas das limitações encontradas no uso de outros indicadores de qualidade do solo. Contudo, sua aplicação demanda um numero maior de investigações regionalizadas para diferentes sistemas de manejo e plantas cultivadas, tipos de solo, clima, atividade biológica do solo, dentre outros, relacionados seus valores críticos a índices medi-os de produtividade agrícola, para que se possa utiliza-lo com segurança na determinação da qualidade física "efetiva" do solo.

Produtividade de culturas e atributos físicos de latossolo vermelho-escuro fase cerrado sob diferentes sistemas de manejo

Author : Amauri Nelson Beutler
Publisher :
ISBN 13 :
Total Pages : 69 pages
Book Rating : 4.:/5 (467 download)

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Book Synopsis Produtividade de culturas e atributos físicos de latossolo vermelho-escuro fase cerrado sob diferentes sistemas de manejo by : Amauri Nelson Beutler

Download or read book Produtividade de culturas e atributos físicos de latossolo vermelho-escuro fase cerrado sob diferentes sistemas de manejo written by Amauri Nelson Beutler and published by . This book was released on 1999 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Relações espaciais entre fertilidade do solo e produtividade de culturas sob sistema de plantio direto

Author : Osvaldo Guedes Filho Guedes Filho
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Relações espaciais entre fertilidade do solo e produtividade de culturas sob sistema de plantio direto by : Osvaldo Guedes Filho Guedes Filho

Download or read book Relações espaciais entre fertilidade do solo e produtividade de culturas sob sistema de plantio direto written by Osvaldo Guedes Filho Guedes Filho and published by . This book was released on 2008 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: O objetivo deste trabalho foi analisar a variabilidade espacial de atributos de fertilidade do solo e sua influência na produtividade de culturas sob o sistema de plantio direto. o experimento está localizado no Centro Experimental Central do Instituto Agronômico, Campinas, SP, onde foram determinados os dados de produtividade (kg ha -1) das safras de labelabe, milho, triticale e mamona e dados de fertilidade do solo na profundidade de 0,0-0,20 m. A estatística descritiva foi utilizada para avaliar a variabilidade espacial. Todas as variáveis apresentaram dependência espacial e tiverem seus semivariogramas ajustados ao modelo esférico. Os mapas construídos com valores interpolados por krigagem indicam que a parte lateral esquerda da área apresentou a maior relação espacial entre produtividade e os atributos de fertilidade do solo, favorecendo o manejo diferenciado na área.

Fertilizing for High Yield and Quality

Author : Lindbergue Araújo Crisóstomo
Publisher :
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.:/5 (891 download)

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Book Synopsis Fertilizing for High Yield and Quality by : Lindbergue Araújo Crisóstomo

Download or read book Fertilizing for High Yield and Quality written by Lindbergue Araújo Crisóstomo and published by . This book was released on 2007 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acerola; Banana; Cashew: dwarf variety; Citrus; Coconut: green dwarf variety; Guava; Mango; Papaya; Passion-fruit; Pineapple; Soursop.

Properties and Management of Soils in the Tropics

Author : Pedro A. Sanchez
Publisher : Cambridge University Press
ISBN 13 : 1107176050
Total Pages : 685 pages
Book Rating : 4.1/5 (71 download)

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Book Synopsis Properties and Management of Soils in the Tropics by : Pedro A. Sanchez

Download or read book Properties and Management of Soils in the Tropics written by Pedro A. Sanchez and published by Cambridge University Press. This book was released on 2019-01-10 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.

Proximal Soil Sensing

Author : Raphael A. Viscarra Rossel
Publisher : Springer Science & Business Media
ISBN 13 : 9048188598
Total Pages : 440 pages
Book Rating : 4.0/5 (481 download)

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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.

Principles for Building Resilience

Author : Reinette Biggs
Publisher : Cambridge University Press
ISBN 13 : 110708265X
Total Pages : 317 pages
Book Rating : 4.1/5 (7 download)

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Book Synopsis Principles for Building Resilience by : Reinette Biggs

Download or read book Principles for Building Resilience written by Reinette Biggs and published by Cambridge University Press. This book was released on 2015-04-02 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the very latest research, this book provides an in-depth review of the role of resilience in the management of social-ecological systems and the ecosystem services they provide. Leaders in the field outline seven principles for building resilience in social-ecological systems, examining how these can be applied to advance sustainability.

Integrated Management and Biocontrol of Vegetable and Grain Crops Nematodes

Author : A. Ciancio
Publisher : Springer Science & Business Media
ISBN 13 : 1402060637
Total Pages : 364 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Integrated Management and Biocontrol of Vegetable and Grain Crops Nematodes by : A. Ciancio

Download or read book Integrated Management and Biocontrol of Vegetable and Grain Crops Nematodes written by A. Ciancio and published by Springer Science & Business Media. This book was released on 2007-12-08 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second volume of the IMPD series describes aspects related to the most important phytoparasitic nematodes, considering the integration of biological control methods with other management practices and technologies, including the use of predatory nematodes and microbial rhizosphere antagonists. A focus is given on regional issues. A review on nematode management in cotton is integrated by a chapter on management of nematodes on wheat. New technologies are also revised.

The Future of Tourism

Author : Eduardo Fayos-Solà
Publisher : Springer
ISBN 13 : 3319899414
Total Pages : 343 pages
Book Rating : 4.3/5 (198 download)

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Book Synopsis The Future of Tourism by : Eduardo Fayos-Solà

Download or read book The Future of Tourism written by Eduardo Fayos-Solà and published by Springer. This book was released on 2018-08-22 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the foundations for the future of tourism in a structured and detailed format. The who-is-who of tourism intelligence has collaborated to present a definitive blueprint for tourism reflecting the role of science, market institutions, and governance in its innovation and sustainability. The book adopts a comprehensive approach, exploring recent research and the latest developments in practice to inform the reader about instruments and actions that can shape a successful future for tourism. Broad in scope, the book incorporates the perspectives of leading tourism academics, as well as the views of tourism entrepreneurs, destination managers, government officials, and civil leaders. The book is divided into three parts, the first of which addresses the scientific facets of innovation, analyzing the challenges and opportunities that technology provides for organic and disruptive developments in tourism, which will shape its future. In turn, the second part examines socio-cultural paradigms – with a view to dismantling traditional barriers to innovation. It also explores the role of heritage and the ethics of inclusiveness as drivers for sustainable tourism. The third part investigates new ways and means in governance and policy making for tourism. It introduces advances such as strategic positioning, symbiotic partnerships, and innovative management, and closes by presenting governance frameworks for an inclusive and sustainable future of tourism.

The Root Causes of Biodiversity Loss

Author : Alexander Wood
Publisher : Routledge
ISBN 13 : 1134199384
Total Pages : 416 pages
Book Rating : 4.1/5 (341 download)

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Book Synopsis The Root Causes of Biodiversity Loss by : Alexander Wood

Download or read book The Root Causes of Biodiversity Loss written by Alexander Wood and published by Routledge. This book was released on 2013-11-05 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world is losing species and biodiversity at an unprecedented rate. The causes go deep and the losses are driven by a complex array of social, economic, political and biological factors at different levels. Immediate causes such as over-harvesting, pollution and habitat change have been well studied, but the socioeconomic factors driving people to degrade their environment are less well understood. This book examines the underlying causes. It provides analyses of a range of case studies from Brazil, Cameroon, China, Danube River Basin, India, Mexico, Pakistan, Philippines, Tanzania and Vietnam, and integrates them into a new and interdisciplinary framework for understanding what is happening. From these results, the editors are able to derive policy conclusions and recommendations for operational and institutional approaches to address the root causes and reverse the current trends. It makes a contribution to the understanding of all those - from ecologists and conservationists to economists and policy makers - working on one of the major challenges we face.

Architecture of Brazil

Author : Hugo Segawa
Publisher : Springer Science & Business Media
ISBN 13 : 146145431X
Total Pages : 276 pages
Book Rating : 4.4/5 (614 download)

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Book Synopsis Architecture of Brazil by : Hugo Segawa

Download or read book Architecture of Brazil written by Hugo Segawa and published by Springer Science & Business Media. This book was released on 2012-12-05 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Architecture of Brazil: 1900-1990 examines the processes that underpin modern Brazilian architecture under various influences and characterizes different understandings of modernity, evident in the chapter topics of this book. Accordingly, the author does not give overall preference to particular architects nor works, with the exception of a few specific works and architects, including Warchavchik, Niemeyer, Lucio Costa, and Vilanova Artigas.

Sugarcane Bioethanol

Author : Luís Augusto Barbosa Cortez
Publisher :
ISBN 13 : 9788521205302
Total Pages : 994 pages
Book Rating : 4.2/5 (53 download)

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Book Synopsis Sugarcane Bioethanol by : Luís Augusto Barbosa Cortez

Download or read book Sugarcane Bioethanol written by Luís Augusto Barbosa Cortez and published by . This book was released on 2010 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Brazil, sugarcane ethanol supplied, in 2009, 17.6 % of the energy for land transportation (excluding railroads)and about 55% of the total energy supplied by liquid fuel for Otto cycle engines. Besides the lower production costs ethanol produced from sugarcane in Brazil has another important advantage: in Central-South Brazil only 1 unit of fossil energy is used for each 8-9 units of energy produced by ethanol from sugarcane. Carbon emissions reduction also benefits from sugarcane ethanol: for each cubic meter of ethanol used as fuel, there is net saving of around 2 t CO2 not emitted to the atmosphere while, at the same time, no SO2 is emitted. Sugarcane was introduced in Brazil in 1532. The "Brazilian model" of producing concomitantly sugar and ethanol, brought important technical benefits and made possible an outstanding increase in the competitiveness in the international market for sugar and ethanol. Today about 50% of the sucrose of sugarcane produced in the country is directed to the production of sugar while another half is used to produce Ethanol. Industrial and academic R&D has helped to increase the productivity of ethanol steadily over the past 35 years, at a rate of 3.2% per year. Productivity gains implied savings of planted area by a factor of 2.6. In 2009/2010 the area planted with sugarcane for Ethanol production was 4.2 Mha, amounting to 1% of the total arable land available in Brazil. About 60% of the Ethanol produced in Brazil comes from the State of Sao Paulo, where the productivity is the highest (around 86 t/ha.year). Most of the recent expansion is happening in the center-west region of the country, in degraded pasture lands. The FAPESP Program for Research on Bioenergy, BIOEN, aims at articulating public and private R&D, using academic and industrial laboratories to advance and apply knowledge in fields related to ethanol production in Brazil. The BIOEN Program has a solid core for supporting academic exploratory research activities that will generate new knowledge and form scientists and professionals essential for advancing industry capacity in ethanol related technologies. On top of this, BIOEN includes partnerships with industry for cooperative R&D activities between industrial and academic laboratories, which are to be co-funded by FAPESP and industry.Federal agencies, such as CNPq, will also co-fund the research.

Soil Management for Sustainability

Author : R. Lal
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.3/5 (91 download)

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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

The Physiology of Vegetable Crops, 2nd Edition

Author : Hans Christian Wien
Publisher : CABI
ISBN 13 : 1786393778
Total Pages : 511 pages
Book Rating : 4.7/5 (863 download)

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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.