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Transformacoes Do Nitrogenio 15n Da Ureia Na Cultura Do Arroz Irrigado
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Book Synopsis Transformações do nitrogênio (15N) da uréia na cultura do arroz irrigado by : W. B. Scivitttaro
Download or read book Transformações do nitrogênio (15N) da uréia na cultura do arroz irrigado written by W. B. Scivitttaro and published by . This book was released on 2005 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adinâmica do nitrogênio (N) em sistema de produção de arroz irrigado é bastante complexa, o que se refete na eficiência de recuperação do nutriente proveniente de fertilizantes, que é bastante variável, raramente ultrapassando 50% da quantidade aplicada.Essa situação, além de aumentar os custos de produção, pode causar problemas de poluição ambiental.
Book Synopsis Efeito de fontes de nitrogenio -15N e de modos de aplicacao da ureia -15N em cultura de arroz (Oryza sativa, L.). by : O. G. Bastidas Ortiz
Download or read book Efeito de fontes de nitrogenio -15N e de modos de aplicacao da ureia -15N em cultura de arroz (Oryza sativa, L.). written by O. G. Bastidas Ortiz and published by . This book was released on 1981 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Utilizando-se dois tipos de solo: Latossol Vermelho Escuro (LE) e Podzol Vermelho Amarelo var. Marilia (PVA), o presente trabalho foi realizado com o objetivo de estudar em condicoes de casa de vegetacao, os efeitos da aplicacao, na cultura de arroz, de doses diferentes de sulfato de amonio-15N e da urea-15N na ausencia e presenca de fosforo, e da ureia-15N aplicada de diferentes maneiras, na producao de material vegetal seco (MVS), na quantidade de nitrogenio total absorvido (NTP), na porcentagem de nitrogenio na planta proveniente do fertilizante (%NPPF), na quantidade de nitrogenio na planta proveniente do fertilizante (QNPPF), na eficiencia de utilizacao do fertilizante nitrogenado (EUFN) e no valor "AN". Atraves dos resultados obtidos, comprovou-se que os parametros producao de MVS, NTP, %NPPF, EUFN, e valor "AN" sao influenciados pelo solo. Devido ao fato do Latossolo ser mais deficiente em fosforo, a producao de MVS, neste solo, aumentou com as doses de nitrogenio e fosforo, com a urea e o sulfato de amonio, enquanto que no Podzolizado houve um efeito depressivo na producao de MVS com aplicacao de 550 kg/ha de P. Quanto aos modos de aplicacao, os valores do MVS foram similares para os dois solos. O NTP aumentou com os niveis de fosforo e as doses de nitrogenio para ambas as fontes e ambos os solos. A maior %NPPF no Latossolo, obteve-se com o nivel de 55 kg/ha de P e 100 kg/ha de N, para ambos as fontes, enquanto no Podzolizado, as maiores %NPPF foram obtidas com as doses de 100 kg/ha de N quando nao se adicionou fosforo, para ambos as fontes. A maior QNPPF nos dois solos foi encontrada com a maior dose de aplicacao do nitrogenio de ambas as fontes e com os niveis de 55 kg/ha de P para o PVA e 550 kg/ha de P para o LE. Um aumento da EUFN foi observado com os niveis crescentes de nitrogenio e fosforo, obtendo-se os maximos valores de 52,05% para ureia e de 42,89% para o sulfato de amonio, no solo Podzolizado. Para Latossolo, os maiores valores foram 49,9% com a ureia e 35,9% com o sulfato de amonio. O modo de aplicacao da ureia solido misturado, acusou maior EUFN no Podzolido (58%). No Latossolo, a maior EUFN foi obtida com o modo de aplicacao liquido em camadas (43,88%). Os valores "AN" foram constantes na maioria dos tratamentos dentro das fontes e dentro dos solos. Estudos mais apurados devem ser feitos a respeito da tecnica a ser utilizada e da interpretacao a ser dada a estes valores.
Book Synopsis Potencial de fornecimento de nitrogênio (15N) de adubos verdes e mineral para o arroz irrigado by : W. B. Scivittaro
Download or read book Potencial de fornecimento de nitrogênio (15N) de adubos verdes e mineral para o arroz irrigado written by W. B. Scivittaro and published by . This book was released on 2005 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: A adubação nitrogenada favorece o desempenho produtivo do arroz irrigado. Tradicionalmente, os fertilizantes minerais constituem a principal fonte de nitrogênio (N) para a cultura. A preocupação crescente coma sustentabilidade dos sistemas produtivos tem estimulado a busa de fontes alternativas do nutriente, que possibilitem a substituição integral ou parcial desses insumos. Devido ao seu potencial de fixação biológica de N, as leguminosas utlizandas como adubos verdes têm sido consideradas alterantivas promissoras para atender a essa demanda.
Book Synopsis Nitrogen in Agricultural Systems by : James Stuart Schepers
Download or read book Nitrogen in Agricultural Systems written by James Stuart Schepers and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: Review of the principles and management implications related to nitrogen in the soil-plant-water system.
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 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 Agricultural Compendium for Rural Development in the Tropics and Subtropics by :
Download or read book Agricultural Compendium for Rural Development in the Tropics and Subtropics written by and published by Elsevier Science & Technology. This book was released on 1985 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ilaco handbook
Download or read book List of Translations written by and published by . This book was released on 1981 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biochar for Environmental Management by : Dr. Johannes Lehmann
Download or read book Biochar for Environmental Management written by Dr. Johannes Lehmann and published by Earthscan. This book was released on 2009 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Biochar is the carbon-rich product when biomass (such as wood, manure, or crop residues) is heated in a closed container with little or no available air. It can be used to improve agriculture and the environment in several ways, and its stability in soil and superior nutrient-retention properties make it an ideal soil amendment to increase crop yields. In addition to this, biochar sequestration, in combination with sustainable biomass production, can be carbon-negative and therefore used to actively remove carbon dioxide from the atmosphere, with major implications for mitigation of climate change. Biochar production can also be combined with bioenergy production through the use of the gases that are given off in the pyrolysis process.This book is the first to synthesize the expanding research literature on this topic. The book's interdisciplinary approach, which covers engineering, environmental sciences, agricultural sciences, economics and policy, is a vital tool at this stage of biochar technology development. This comprehensive overview of current knowledge will be of interest to advanced students, researchers and professionals in a wide range of disciplines"--Provided by publisher.
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:
Book Synopsis Seed to Civilization by : Charles Heiser
Download or read book Seed to Civilization written by Charles Heiser and published by . This book was released on 2013-10-01 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Biology and Ecology of Nitrogen Fixation by : Takuji Ohyama
Download or read book Advances in Biology and Ecology of Nitrogen Fixation written by Takuji Ohyama and published by BoD – Books on Demand. This book was released on 2014-01-29 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological nitrogen fixation has essential role in N cycle in global ecosystem. Several types of nitrogen fixing bacteria are recognized: the free-living bacteria in soil or water; symbiotic bacteria making root nodules in legumes or non-legumes; associative nitrogen fixing bacteria that resides outside the plant roots and provides fixed nitrogen to the plants; endophytic nitrogen fixing bacteria living in the roots, stems and leaves of plants. In this book there are 11 chapters related to biological nitrogen fixation, regulation of legume-rhizobium symbiosis, and agriculture and ecology of biological nitrogen fixation, including new models for autoregulation of nodulation in legumes, endophytic nitrogen fixation in sugarcane or forest trees, etc. Hopefully, this book will contribute to biological, ecological, and agricultural sciences.
Book Synopsis Soil and Culture by : Edward R. Landa
Download or read book Soil and Culture written by Edward R. Landa and published by Springer Science & Business Media. This book was released on 2010-01-28 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: SOIL: beneath our feet / food and fiber / ashes to ashes, dust to dust / dirt!Soil has been called the final frontier of environmental research. The critical role of soil in biogeochemical processes is tied to its properties and place—porous, structured, and spatially variable, it serves as a conduit, buffer, and transformer of water, solutes and gases. Yet what is complex, life-giving, and sacred to some, is ordinary, even ugly, to others. This is the enigma that is soil. Soil and Culture explores the perception of soil in ancient, traditional, and modern societies. It looks at the visual arts (painting, textiles, sculpture, architecture, film, comics and stamps), prose & poetry, religion, philosophy, anthropology, archaeology, wine production, health & diet, and disease & warfare. Soil and Culture explores high culture and popular culture—from the paintings of Hieronymus Bosch to the films of Steve McQueen. It looks at ancient societies and contemporary artists. Contributors from a variety of disciplines delve into the mind of Carl Jung and the bellies of soil eaters, and explore Chinese paintings, African mud cloths, Mayan rituals, Japanese films, French comic strips, and Russian poetry.
Book Synopsis Quantified Eco-Efficiency by : Gjalt Huppes
Download or read book Quantified Eco-Efficiency written by Gjalt Huppes and published by Springer Science & Business Media. This book was released on 2007-06-03 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: A central asset of eco-efficiency analysis is that it does not depend on a specific evaluation of environmental impacts against economic effects. Several evaluation methods may be used, including those based on willingness-to-pay, panel procedures, and public statements on policy goals. This volume covers all aspects of eco-efficiency analysis and offers a global perspective on the subject.
