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Absorcao De Nutrientes Pela Soja Em Latossolo Roxo Sob Vegetacao De Cerrado
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Book Synopsis Absorção de nutrientes pela soja em latossolo roxo sob vegetação de cerrado by : Ondino C. Bataglia
Download or read book Absorção de nutrientes pela soja em latossolo roxo sob vegetação de cerrado written by Ondino C. Bataglia and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estudou-se o acumulo de materia seca e a absorcao de nutrientes pela cultivar de soja Santa Rosa, de porte determinado, em estadios sucessivos de desenvolvimento. Num experimento conduzido em latossolo roxo de textura fina sob vegetacao de cerrado no municipio de Sao Simao, as amostragens da parte aerea foram feitas a intervalos de 20 dias, no primeiro ano e de trinta dias, nos dois anos subsequentes. Para essa cultivar observou-se maior desenvolvimento vegetativo ate os 90 dias apos o plantio. Todavia, o maior acumulo de materia seca pela planta ocorreu aos 120 dias, quando os graos estavam maduros. Os graos foram responsaveis pela remocao da maior parte de N, P, S e Mo acumulada pela planta durante todo o ciclo. O acumulo desses elementos comparado com a producao de materia seca revelou-se relativamente mais lento. O Zn e o potassio, que tambem sao componentes da semente, tem comportamento distinto quanto a velocidade de absorcao, em comparacao com a producao de materia seca. O zinco tem velocidade de absorcao semelhante a producao de materia seca, enquanto o potassio tem velocidade de absorcao mais rapida. Por outro lado, Ca, Mg, Fe e Mna constituem em maior proporcao a parte vegetativa das plantas. A maior velocidade de acumulo de nutrientes verifica-se ente 60 e 90 dias, fase compreendida entre o florescimento e o inicio da formacao das vagens.
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 National Agricultural Library Catalog by : National Agricultural Library (U.S.)
Download or read book National Agricultural Library Catalog written by National Agricultural Library (U.S.) and published by . This book was released on 1979 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crop Physiology Abstracts written by and published by . This book was released on 1981-07 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Ciência e cultura written by and published by . This book was released on 1977 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis IV Conferencia Mundial de Investigacion en Soja by :
Download or read book IV Conferencia Mundial de Investigacion en Soja written by and published by . This book was released on 1989 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Brazilian journal of agricultural research by :
Download or read book Brazilian journal of agricultural research written by and published by . This book was released on 1988 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Chapters from the Unedited Text of the Soil Taxonomy of the National Cooperative Soil Survey by : United States. Soil Conservation Service
Download or read book Selected Chapters from the Unedited Text of the Soil Taxonomy of the National Cooperative Soil Survey written by United States. Soil Conservation Service and published by . This book was released on 1971 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Agriculture and Industry in Brazil by : Albert Fishlow
Download or read book Agriculture and Industry in Brazil written by Albert Fishlow and published by Columbia University Press. This book was released on 2020-08-04 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agriculture and Industry in Brazil is a study of the economics of Brazilian agriculture and industry, with a special focus on the importance of innovation to productivity growth. Albert Fishlow and José Eustáquio Ribeiro Vieira Filho examine technological change in Brazil, highlighting the role of public policy in building institutions and creating an innovation-oriented environment. Fishlow and Vieira Filho tackle the theme of innovation from various angles. They contrast the relationship between state involvement and the private sector in key parts of the Brazilian economy and compare agricultural expansion with growth in the oil and aviation sectors. Fishlow and Vieira Filho argue that modern agriculture is a knowledge-intensive industry and its success in Brazil stems from public institution building. They demonstrate how research has played a key role in productivity growth, showing how prudent innovation policies can leverage knowledge not only within a particular company but also across whole sectors of the economy. The book discusses whether and how Brazil can serve as a model for other middle-income countries eager to achieve higher growth and a more egalitarian distribution of income. An important contribution to comparative, international, and development economics, Agriculture and Industry in Brazil shows how the public success in agriculture became a prototype for advance elsewhere.
Book Synopsis Predicting Rainfall Erosion Losses by : Walter H. Wischmeier
Download or read book Predicting Rainfall Erosion Losses written by Walter H. Wischmeier and published by . This book was released on 1978 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Universal Soil Loss Equation (USLE) enables planners to predict the average rate of soil erosion for each feasible alternative combination of crop system and management practices in association with a specified soil type, rainfall pattern, and topography. When these predicted losses are compared with given soil loss tolerances, they provide specific guidelines for effecting erosion control within specified limits. The equation groups the numerous interrelated physical and management parameters that influence erosion rate under six major factors whose site-specific values can be expressed numerically. A half century of erosion research in many States has supplied information from which at least approximate values of the USLE factors can be obtained for specified farm fields or other small erosion prone areas throughout the United States. Tables and charts presented in this handbook make this information readily available for field use. Significant limitations in the available data are identified.
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 Pioneering Soil Erosion Prediction by : John M. Laflen
Download or read book Pioneering Soil Erosion Prediction written by John M. Laflen and published by . This book was released on 2003 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Subsoil Management Techniques by : Bobby A. Stewart
Download or read book Subsoil Management Techniques written by Bobby A. Stewart and published by CRC Press. This book was released on 1994-10-12 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principles and practice of deep tillage techniques have often failed to provide long-term, sustainable improvements of the soil for crop production. The book reviews alternative approaches to overcoming subsoil problems. These approaches involve reduced disturbance of the soil, but still provide substantial and sustainable soil improvements. Chapters 1 through 4 discuss the use of minimum tillage, bed farming, mole drainage, and slotting to overcome adverse subsoil conditions. Chapter 5 examines the options available for management of subsoil acidity. The next chapter provides an understanding of the processes involved in stress transmission and compaction under farm trafficking. The last chapter explains the critical role of soil microorganisms in providing long-term biological stabilization and improvements of soil. This reference brings together the latest research information on these subsoil amelioration techniques.
Book Synopsis Priorities for Alleviating Soil-related Constraints to Food Production in the Tropics by :
Download or read book Priorities for Alleviating Soil-related Constraints to Food Production in the Tropics written by and published by Int. Rice Res. Inst.. This book was released on 1980 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt:
