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Resposta Do Feijoeiro A Doses De Fosforo E A Laminas De Agua De Irrigacao
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Book Synopsis Resposta do feijoeiro a doses de fosforo e a laminas de agua de irrigacao by : P. M. da SILVEIRA
Download or read book Resposta do feijoeiro a doses de fosforo e a laminas de agua de irrigacao written by P. M. da SILVEIRA and published by . This book was released on 1998 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efeito de diferentes laminas de agua e de doses de fosforo, aplicadas ao solo, sobre o rendimento do feijoeiro. A aplicacao de doses maiores de fosforo e/ou maiores laminas de agua de irrigacao aumentaram o rendimento de graos.
Book Synopsis Documento de Trabajo-anexo Del Taller de Mejoramiento de Frijol by :
Download or read book Documento de Trabajo-anexo Del Taller de Mejoramiento de Frijol written by and published by CIAT. This book was released on with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abstracts on Field Beans (Phaseolus Vulgaris L.) by :
Download or read book Abstracts on Field Beans (Phaseolus Vulgaris L.) written by and published by . This book was released on 1991 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Funcoes de resposta do feijoeiro (Phaseolus vulgaris L.) ao uso de nitrogenio e lamina de irrigacao by : J. A. Frizzone
Download or read book Funcoes de resposta do feijoeiro (Phaseolus vulgaris L.) ao uso de nitrogenio e lamina de irrigacao written by J. A. Frizzone and published by . This book was released on 1986 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: Com o objetivo de estudar o efeito da lamina de agua aplicada, da adubacao nitrogenada e da interacao destes fatores sobre o rendimento economico e componentes da producao do feijoeiro (Phaseolus vulgaris L.), um experimento foi conduzido com a cultivar carioca, no campo experimental da UNESP, Campus de Ilha Solteira, SP. O delineamento experimental foi o de blocos ao acaso com parcelas subdivididas, com quatro repeticoes. Os tratamentos constaram da combinacao de seis laminas de agua, localizadas nas parcelas e seis doses de nitrogenio localizadas nas subparcelas. A aplicacao de agua foi realizada atraves de um equipamento de aspersao disposto no campo segundo o "sistema de aspersao em linha". As irrigacoes foram controladas em funcao da evaporacao acumulada no tanque "Classe A" (ECA), aplicando-se agua sempre que ECA atingiu 50mm. A parcela W1 recebeu, em cada irrigacao, uma lamina de agua igual a 100% de ECA. Atraves das analises dos resultados obtidos concluiu-se que: - A aplicacao de agua e nitrogenio aumentaram o rendimento de graos segundo uma relacao quadratica, sendo significativas as interacoes entre os fatores. O peso medio de 100 graos, o numero medio de graos por vagem e de vagens por planta aumentaram com a aplicacao de agua e nitrogenio, contudo as interacoes entre agua e nitrogenio nao foram significativas. - A analise conjunta dos fatores agua e nitrogenio mostrou que o maximo rendimento de graos estimado foi alcancado com a aplicacao de 570,4 m de agua e 117,4 kg/ha-1 de nitrogenio. - Para uma dada relacao entre os precos da agua e do produto, a maior lamina de agua economicamente otima ocorreu quando se aplicou 90gk/ha-1 de nitrogenio. A inviabilidade economica da irrigacao foi atingida mais rapidamente quando nao se utilizou adubacao nitrogenada. - Para uma dada relacao entre os precos do nitrogenio e do produto, a maxima receita liquida pode ser atingida com a aplicacao de uma lamina de agua de 534mm e com a correspondente dose de nitrogenio economicamente otima. A inviabilidade economica da adubacao nitrogenada foi atingida mais rapidamente na menor lamina de agua aplicada (105mm). - O maximo rendimento relativo de graos foi obtido no regime de irrigacao manejado a -1,9 bar, correspondendo a uma frequencia de irrigacao de 6 dias.
Book Synopsis Efeitos de lâminas de irrigação e preparo do solo na resposta do feijoeiro ao nitrogênio em cobertura by : L. F. Stone
Download or read book Efeitos de lâminas de irrigação e preparo do solo na resposta do feijoeiro ao nitrogênio em cobertura written by L. F. Stone and published by . This book was released on 2002 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Em áreas afetadas pelo mofo branco causado por Sclerotinia sclerotiorum, os produtores têm reduzido a irrigação na fase vegetativa do feijoeiro, para criar condições desfavoráveis à doença. Este trabalho objetivou determinar se o estresse hídrico nesta fase reduz a produtividade do feijoeiro, se o aumento na adubação nitrogenada em cobertura compensa esta redução e se estas respostas variam com o sistema de preparo do solo. O trabalho foi conduzido em Latossolo Vermelho-Escuro, no delineamento em faixas, com parcelas subdivididas, com quatro repetições. As faixas A foram constituídas de cinco lâminas de água e as faixas B de três sistemas de preparo do solo: grade aradora, arado de aiveca e plantio direto. Nas subparcelas foram aplicadas quatro doses de nitrogênio em cobertura: 0, 20, 40 e 60 kg ha-1 , nos dois primeiros anos, e 0, 40, 80 e 120 kg ha-1, nos dois últimos. O estresse hídrico na fase vegetativa reduziu a produtividade do feijoeiro. O aumento na adubação nitrogenada em cobertura compensou, em parte, esta redução. A produtividade sob plantio direto aumentou com o tempo de adoção desta prática. Os sistemas de preparo do solo não afetaram a resposta do feijoeiro ao nitrogênio.
Book Synopsis Resposta Do Feijoeiro (Phaseolus Vulgaris L.) a Aplicacao de Fosforo Em Solos de Cerrado by : A.M. de CARVALHO
Download or read book Resposta Do Feijoeiro (Phaseolus Vulgaris L.) a Aplicacao de Fosforo Em Solos de Cerrado written by A.M. de CARVALHO and published by . This book was released on 1991 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Um experimento foi conduzido em casa de vegetacao para avaliar a relacao dos parametros da planta (producao de materia seca aos 35 e 90 dias, producao de graos, numero de vagens por planta, numero de graos por vagem, peso de 100 graos) com doses crescenters de P (0, 25, 50, 100, 200, e 400 mg. kg-1) aplicadas a 4 solos (LRd, LEd, LVd, AQd) apresentando 61%, 63%, 37% e 14% de argila, respectivamente. Incubaram-se as amostras dos solos durante 7,0 dias, apos os quais foram executadas as analises quimicas e realizado o plantio do feijao. O primeiro corte das plantas foi feito aos 35 dias apos o plantio para avaliar a producao de materia seca e a concentracao de fosforo e de outros nutrientes na parte aerea do feijoeiro. Nas colheita determinou-se o numero de va-gens por 2 plantas, o numero de graos por vagem, a producao de graos, o peso de 100 graos, a producao de materia seca e a concentracao de fosforo e de outros nutrientes na parte aerea das plantas. Os teores de fosforo extraido por Mehlich-1 foram maiores nos solos mais arenosos (AQd e LVd). Os incrementos nas doses de fosforo influenciaram significativamente os parametros da planta avaliados. Nos solos LRd e LEd, a producao de materia seca (35 e 90 dias) foi o parametro que melhor relacionou com o fosforo aplicado e extraido, enquanto que no LVd e na AQd, a producao de graos tambem apresentou relacoes elevadas. O fosforo soluvel influenciou negativamente as concentracoes dos elementos, N, Zn e Cu, na parte aerea do feijoeiro. A eficiencia de recuperacao de ...
Download or read book Agrindex written by and published by . This book was released on 1992 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acta Scientiarum written by and published by . This book was released on 2003 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Common Bean Improvement in the Twenty-First Century by : S.P. Singh
Download or read book Common Bean Improvement in the Twenty-First Century written by S.P. Singh and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: The common bean (Phaseolus vulgaris L. ) is the most important pulse crop in the world. It is an important source of calories, proteins, dietary fibers, minerals, and vitamins for millions of people in both developing and developed countries worldwide. It complements cereals and other carbohydrate-rich foods in providing near-perfect nutrition to people of all ages. Moreover, a regular intake ofbeans helps lower cholesterol and cancer risks. Despite the fact that per capita consumption of common bean in some developed countries (e. g. , the U. S. A. ) has been increasing over the last several years, in general, the average global per capita consumption is declining because production is unable to keep up with the population growth. Moreover, increasing demand for pesticide-free food products, concern for natural resources conservation, and the need to reduce production costs offer daunting challenges to the twenty-first century policy makers, bean growers, and researchers alike. High yielding, high quality bean cultivars that require less water, fertilizers, pesticides, and manual labor combined with integrated management of abiotic and biotic stresses will have to be developed. Eminent bean researchers were invited to contemplate these issues, prepare a state-of-the-art account on most relevant topics, and offer their insight into research directions into the twenty-first century. Four excellent books have been published covering various aspects ofthe common bean since 1980. These books are: I) Bean Production Problems nd in the Tropics (l SI ed. 1980, 2 ed. 1989), H. F. Schwartz & M. A.
Book Synopsis Growth Control in Woody Plants by : Theodore T. Kozlowski
Download or read book Growth Control in Woody Plants written by Theodore T. Kozlowski and published by Elsevier. This book was released on 1997-01-21 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: The processes and mechanisms that control the growth of woody plants are of crucial importance for both economic and biological reasons. The comprehensive coverage of Growth Control in Woody Plants includes discussion of the growth controlling factors in both reproductive structures (flowers, fruit, seeds, pollen, etc.) and vegetative organs (stems, branches, leaves, and roots). Other major topics covered include seed germination, seedling growth, physiological and environmental regulation of growth, cultural practices, and biotechnology.This comprehensive treatment of the many factors that control the growth of woody plants can serve both as a valuable text and as a frequently used reference.* Includes comprehensive representation of a broad subject* Provides thorough bibliographic coverage * Well illustrated* Serves as a vital companion to Physiology of Woody Plants, Second Edition
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 Soil Compaction Studies by : Timothy Shaun Stafford Conlin
Download or read book Soil Compaction Studies written by Timothy Shaun Stafford Conlin and published by . This book was released on 1996 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first two experiments described in this report were designed to identify early signs of compaction-related stress in lodgepole pine (Pinus contorta), Douglas-fir (Pseudotsuga menziesii), and white spruce (Picea glauca). A secondary objective was to examine the interaction of soil moisture and compaction on initial seedling growth. The third experiment was designed to examine the efforts of soil compaction on the composition of the soil atmosphere, and is continuing.
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 Salinity Assessment by : J. D. Rhoades
Download or read book Soil Salinity Assessment written by J. D. Rhoades and published by Food & Agriculture Org.. This book was released on 1999 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Determination of soil salinity from aqueous electrical conductivity; determination of soil salinity from soil-paste and bulk soil electrical conductivity; example uses of salinity assessment technology; operational and equipment costs associated with salinity instrumentation measurement techniques.
Book Synopsis Modelling Potential Crop Growth Processes by : J. Goudriaan
Download or read book Modelling Potential Crop Growth Processes written by J. Goudriaan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: We dedicate this book to professor C. T. de Wit (1924 - 1993) who initiated Production Ecology as a school of thought at the Wageningen Agricultural Univer sity (see Rabbinge et at. , 1990). To acknowledge the leading role of C. T. de Wit, a recently formed graduate school at this university in Production Ecology was named after him. Production Ecology is the study of ecological processes, with special attention to flows of energy and matter as factors that determine the productivity of ecological systems. Agro-ecosystems are a special case of ecosystems which are much better suited for the productivity approach than natural ecosystems are. This is the reason for the strong role of agricultural research in production ecology. On the other hand, it must be recognized that the spatial heterogeneity of natural ecosys tems and their species richness may alter some ecophysiological relationships. However, the basic physical, chemical and physiological processes will be the same. De Wit introduced the state variable approach as the basis for simulation mod elling. In this approach the floating character of nature is schematized into a series of snapshots over time in which the states are frozen at each separate moment. The current state determines how the rates of change will lead to the next snapshot. This way of thinking enables a clear and workable representation of interacting simul taneous processes, without compromising on the mathematics.
Book Synopsis Food Crops of the Lowland Tropics by : C. L. A. Leakey
Download or read book Food Crops of the Lowland Tropics written by C. L. A. Leakey and published by Oxford University Press, USA. This book was released on 1977 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice in west Africa. Sorghum and pearl millet. Grain legumes. Root and tuber crops. Bananas as a food crop. Vegetable crops. Forage and fodder crops. Irrigation. Insect and mite pests and their control. Disordes associated with fungi, bacteria, viruses, and nematodes and their control. Grain storage. Agricultural mechanization. Traditional african systems of agriculture and their improvement. Land tenure.
Book Synopsis The radiation regime and architecture of plant stands by : J. Ross
Download or read book The radiation regime and architecture of plant stands written by J. Ross and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: The solar radiant energy is in fact the only source of energy for the basic physical processes taking place in the atmosphere and on the earth's surface. When passing through the atmosphere and being reflected by the ground surface, solar radiation undergoes changes and conversions. Some of it is absorbed in the atmosphere and converted into other forms of energy, mainly into heat, and some is scattered by gases, by dust and by water vapour. Because of absorption and scattering in the atmosphere, solar radiation is changed by the time it reaches the earth's surface. That part of it which arrives as a beam of parallel rays is referred to as direct solar radiation, and that which is scattered in the atmosphere and reaches the earth's surface from all directions of the sky is called diffuse solar radiation. Both of them are reflected back into the atmosphere when they reach the earth's surface, and this third type of radiation is defined as reflected radiation. All of these radiations differ from solar radiation arriving at the upper level of the atmosphere in intensity as well as in spectral composition although they all fall within the spectral region of solar radiation. In atmospheric physics these types of radiation are known as short-wave radiation (SWR) as distinguished from long-wave or irifrared radiation (L WR) emitted by the atmosphere and the earth's surface.
