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Correlacao Entre Materia Seca E Teores Foliares De P E K Na Cultura Do Milho Zea Mays L
Download Correlacao Entre Materia Seca E Teores Foliares De P E K Na Cultura Do Milho Zea Mays L full books in PDF, epub, and Kindle. Read online Correlacao Entre Materia Seca E Teores Foliares De P E K Na Cultura Do Milho Zea Mays L ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Correlacao entre materia seca e teores foliares de P e K na cultura do milho (Zea mays L.). by : E.A. Barreto
Download or read book Correlacao entre materia seca e teores foliares de P e K na cultura do milho (Zea mays L.). written by E.A. Barreto and published by . This book was released on 1978 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neste trabalho procurou-se estudar os possiveis efeitos de diferentes niveis de calagem, fosforo e potassio aplicados no solo, na quantidade de fosforo e potassio encontrada nas folhas, e a correlacao existente entre os diferentes niveis e a producao de materia seca.
Book Synopsis Relações ecologicas entre culturas de milho (Zea Mays) e seringueira (Hevea Brasiliensis) em um sistema agroflorestal by : Lino Ricardo Rios Furia
Download or read book Relações ecologicas entre culturas de milho (Zea Mays) e seringueira (Hevea Brasiliensis) em um sistema agroflorestal written by Lino Ricardo Rios Furia and published by . This book was released on 2000 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Continuação) rendimento da cultura de milho; (e) a produção de massa de matéria seca de folha, colmo, espiga e parte aérea total, bem como o rendimento de grãos e o índice de área foliar podem ser estimados em função da distância do renquedeárvores, bem como da radiação disponível; e (d) o modelo extrapolável pode ser utilizado para se estimar a massa de matéria seca relativa de milho (folha, colmo, espiga e parte aérea total) e o índice de área foliar em função do númerorelativode graus-dia e da radiação relativa.
Book Synopsis Efeitos do sistema de plantio do milho (Zea mays L.) e da rotacao com a soja sobre algumas caracteristicas fisicas do solo e comportamento da cultura by : L.A. Daniel
Download or read book Efeitos do sistema de plantio do milho (Zea mays L.) e da rotacao com a soja sobre algumas caracteristicas fisicas do solo e comportamento da cultura written by L.A. Daniel and published by . This book was released on 1984 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: Considerando que o comportamento da cultura e influenciado pelas caracteristicas fisicas, quimica e bioquimicas do meio onde se desenvolve e, como o metodo de manejo do solo assim como os tratos culturais empregados podem modificar tais caracteristicas, procurou-se, com o presente trabalho, estudar o comportamento da cultura do milho, com e sem rotacao com a cultura de soja, cultivadas atraves dos sistemas de plantio direto e convencional. Tais estudos basearam-se no ensaio desenvolvido em area experimental do campus da UNESP, localizado em Jaboticabal - SP., durante o ano agricola 82/83, em condicoes reais de campo. O ensaio desenvolveu-se durante o periodo de outubro de 1982 a abril de 1983, a partir do qual foram levantados informacoes quanto as seguintes caracteristicas fisicas do solo: temperatura, tensao de agua, densidade aparente e resistencia a penetracao. Com relacao ao comportamento da cultura do milho ao longo do ciclo, foram feitas determinacoes da altura, acumulo de materia seca, area foliar, producao de graos e indice de produtividade. Da analise dos resultados obtidos, evidenciaram-se algumas conclusoes como: os dois sistemas de cultivo nao mostraram por si so, influencia no comportamento da cultura do milho; o sistema de plantio direto promoveu menores variacoes de temperatura e de tensao de agua no solo, na fase de germinacao e emergencia da cultura, assim como determinou maiores valores de resistencia do solo a penetracao em sua camada superficial (ate 20,0 cm de profundidade), quando (...).
Book Synopsis Relacao de alguns parametros agronomicos e bromatologicos de hibridos de milho (Zea mays L.) com a producao, digestibilidade e teor de materia seca na planta by : M. A. Penati
Download or read book Relacao de alguns parametros agronomicos e bromatologicos de hibridos de milho (Zea mays L.) com a producao, digestibilidade e teor de materia seca na planta written by M. A. Penati and published by . This book was released on 1995 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: O objetivo deste trabalho e caracterizar parametros estruturais e quimicos da planta de milho e suas influencias sobre a producao de materia seca (KGMS), a porcentagem de materia seca da planta (MSP%) e a digestibilidade da materia seca da planta de milho (DGP%), que sao caracteristicas importantes na producao de milho para silagem. O experimento foi estabelecido no dia 1o. de novembro de 1991, na Escola Superior de Agricultura Luiz de Queiroz-USP em Piracicaba-SP. Na adubacao utilizada, a quantidade de N, P2O5 e K2O foram respectivamente de 156, 120 e 204 KG/ha, mais micronutrientes. Foram utilizados 2 hibridos de ciclo super precoce, 10 hibridos de ciclo precoce, 1 hibrido de ciclo semiprecoce e 7 hibridos de ciclo normal. A area experimental foi composta de 4 blocos, onde 20 hibridos foram estabelecidos em parcelas constituidas de 4 linhas de 5 metros, sendo colhidas somente as duas do meio. Os parametros agronomicos determinados para a planta toda e seus componentes foram: porcentagem de materia seca, producao de materia seca e a proporcao dos componentes na planta. Os parametros bromatologicos determinados para a planta toda e os componentes haste e folhas foram: digestibilidade verdadeira "in vitro" da materia seca (DVIVMS), fibra insoluvel em detergente neutro (FDN), hemicelulose, fibra insoluvel em detergente acido (FDA), celulose e lignina. Para realizar a analise estatistica foi utilizado o programa SAS (1988), e atraves dele foi utilizado o procedimento de regressao multipla (REG), com os modos de selecao "maxr", "rsquare" e "cp", adotando-se como indice para a escolha do melhor modelo o indice de Mallow (cp). Nesse experimento a planta passou por momentos de deficiencia hidrica durante o periodo compreendido entre o florescimento e a colheita, afetando assim a producao de graos dos hibridos utilizados. A producao total de materia seca pode ser obtida com diferentes participacoes dos componentes da planta, ou seja, plantas contendo diferentes porcentagens de graos podem ter a mesma producao de materia seca. Entretanto, para haver producao de graos na planta e necessario utilizar-se de hibridos de ciclo precoce, pois a sua porcentagem de graos na planta e superior a dos hibridos de ciclo normal. Os hibridos de ciclo precoce parecem ser os mais indicados para producao de silagem, pois a producao de graos esta correlacionada positivamente com a producao total de materia seca e a porcentagem de materia seca na planta de milho. Os componentes da parede celular sao os principais responsaveis para explicarem a qualidade da materia seca da planta de milho, sendo a porcentagem de lignina na materia seca da planta a mais representativa de todos os outros componentes. A porcentagem de lignina na haste variou de 6% a 12% e tem baixa e negativa correlacao com a digestibilidade verdadeira "in vitro" da materia seca da haste. Este fato sugere que a composicao fisico-quimica e a maneira como a lignina esta relacionada com os demais componentes da parede celular possam explicar melhor a qualidade da haste e ou da planta do que a propria porcentagem de lignina na haste.
Book Synopsis Acumulacao de materia seca e nutrientes em quatro hibridos de milho (Zea mays L.). by : C. V. Manzatto
Download or read book Acumulacao de materia seca e nutrientes em quatro hibridos de milho (Zea mays L.). written by C. V. Manzatto and published by . This book was released on 1987 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foi conduzido um ensaio em casa de vegetacao, no periodo de junho a setembro de 1986, no Depto. de Solos da UFRRJ, para o estudo diferencial de quatro hibridos de milho (Zea mays L.), UNICAMP (F1 902x903), HSN-01, DINA 10 e IAC 1228, quanto ao crescimento, absorcao, acumulacao e itilizacao de N, P eK em uma unica solucao nutritiva, contendo todos os nutrientes necessarios ao crescimento. Asolucao nutritiva foi aerada diariamente, renovada periodicamente e seu pH rejustado, em dias alternados, ao seu valoe inicial (5,%). Durante todo o periodo experimental (87 DAP), as partes das plantas foram coletadas aos 15, 21, 35, 45, 51, 67, 72 e 87 dias apos plantio. Observaram-se diferencas significativas na acumulacao de materia seca total e das partes da planta (colmo + bainhas, folhas e raizes)., nas areas foliar e radicular e no acumulo total de N, P e K. Procedeu-se entao a uma analise de crescimento, utilizando-se funcoes matematicas. Afuncao exponencial polinomial com limitacao quadratica descreveu convenientemente a variacao temporal da acumulacao de materia seca da planta e de suas partes foliar e radicular e da acumulacao de nutrientes nos diversos hibridos estudados. Aparticao da taxa de absorcao de nutrientes em seus componentes parciais. Fluxo (F) e Razao de Area Radicular (RAR), bem como do F em seus componentes Taxa de Assimilacao liquida (TAL), relacao Area Foliar Area Radicular (RAFAR) e relacoes TAA. TCA-1, revelou que os hibridos de alta produtividade (DINA 10 e IAC 1228) sao capazes de manter valores ...
Book Synopsis Resposta da cultura do milho (Zea mays L.) a adubacao nitrogenada em cinco solos do Rio Grande do Sul em funcao do teor de materia organica e nitrogenio mineral no solo by : A. Mondardo
Download or read book Resposta da cultura do milho (Zea mays L.) a adubacao nitrogenada em cinco solos do Rio Grande do Sul em funcao do teor de materia organica e nitrogenio mineral no solo written by A. Mondardo and published by . This book was released on 1973 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Com o objetivo principal de estudar a resposta da cultura do milho a aplicacao de varios niveis de nitrogenio, instalou-se cinco experimentos a campo, em diversos solos do Rio Grande do Sul, cujo teor de materia organica variava de 1,1 a 5,5%. Aplicou-se calcario 70 a 100 dias antes do plantio do milho. Por ocasiao do plantio, antes da aplicacao do adubo, foram tomadas amostras de todas as parcelas experimentais para deteminar o teor de materia organica, nitrogenio mineral, pH e granulometria do solo. Utilizou-se as doses de 0, 80, 160,240 e 320 kg N/ha, sob a forma de ureia, aplicando-se um terco na base e dois-tercos na cobertura, 40 a 50 dias apos a germinacao. Utilizou-se sementes de milho hibrido, cultivar SAVE-190, em todos os experimentos, sendo a resposta da cultura medida em termos de rendimento de graos por hectare. Os maiores rendimentos medios foram obtidos no solo Colegio, atingindo 7550 kg/ha. Por outro lado, as maiores respostas da cultura a aplicacao de nitrogenio foram obtidas - nos solos Itapoa I e Itapoa II, onde se verificou aumentos no rendimento ate 240 kg N/ha, ao passo que no solo Guaiba o rendimento maximo foi atingido com a aplicacao de 80 kg N/ha. Nao houve porem, resposta significativa a aplicacao de nitrogenio nos solos Colegio e Erexim. (...).
Book Synopsis Natural Enemies of Insect Pests in Neotropical Agroecosystems by : Brígida Souza
Download or read book Natural Enemies of Insect Pests in Neotropical Agroecosystems written by Brígida Souza and published by Springer. This book was released on 2021-01-21 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to address the importance of natural enemies and functional diversity for biological control in Neotropical agroecosystems. Several aspects related to the conservation of natural enemies, such as vegetation design and climate change, are discussed in Part 1 and the bioecology of several insects groups used in biological control in Latin America is presented in Part 2. Part 3 is devoted to mass production of natural enemies while Part 4 describes how these insects have been used to control of pests in major crops, forests, pasture, weeds and plant diseases. Lastly, Part 5 reports Latin-American experiences of integration of biological in pest management programs.
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
Book Synopsis Postharvest Physiological Disorders in Fruits and Vegetables by : Sergio Tonetto de Freitas
Download or read book Postharvest Physiological Disorders in Fruits and Vegetables written by Sergio Tonetto de Freitas and published by CRC Press. This book was released on 2019-01-15 with total page 801 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, chock full of color illustrations, addresses the main postharvest physiological disorders studied in fruits and vegetables. For a wide variety of fruits and vegetables, Postharvest Physiological Disorders in Fruits and Vegetables describes visual symptoms, triggering and inhibiting mechanisms, and approaches to predict and control these disorders after harvest. Color photographs illustrate the disorders, important factors, physiology, and management. The book includes a detailed description of the visual symptoms, triggering and inhibiting mechanisms, and possible approaches to predict and control physiological disorders. The mechanisms triggering and inhibiting the disorders are discussed in detail in each chapter, based on recent studies, which can help readers better understand the factors regulating each disorder. The description of possible approaches to predict and control each disorder can help growers, shippers, wholesalers, and retailers to determine the best management practices to reduce disorder incidence and crop losses. Features: Presents visual symptoms of postharvest physiological disorders that will help readers to precisely identify the disorders in fruits and vegetables Details mechanisms triggering and inhibiting the postharvest disorders Explains possible approaches to predict and control these disorders Suggests the best postharvest management approaches for each crop Although there are many scientific publications on postharvest physiological disorders, there are no recent reviews or books putting together the most recent information about the mechanisms regulating, as well as about the possible approaches to predict and control these disorders.
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 Physiology of Crop Production by : N.K. Fageria
Download or read book Physiology of Crop Production written by N.K. Fageria and published by CRC Press. This book was released on 2006-05-16 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: This single volume explores the theoretical and the practical aspects of crop physiological processes around the world The marked decrease over the past century in the land available for crop production has brought about mounting pressure to increase crop yields, especially in developing nations. Physiology of Crop Production provides cutting-edge research and data for complete coverage of the physiology of crop production, all in one source, right at your fingertips. This valuable reference gives the extensive in-depth information soil and crop professionals need to maximize crop productivity anywhere the world. Leading soil and plant scientists and researchers clearly explain theory, practical applications, and the latest advances in the field. Crop physiology is a vital science needed to understand crop growth and development to facilitate increases of plant yield. Physiology of Crop Production presents a wide range of information and references from varying regions of the world to make the book as complete and broadly focused as possible. Discussion in each chapter is supported by experimental data to make this book a superb resource that will be used again and again. Chapter topics include plant and root architecture, growth and yield components, photosynthesis, source-sink relationship, water use efficiency, crop yield relative to water stress, and active and passive ion transport. Several figures and tables accompany the extensive referencing to provide a detailed, in-depth look at every facet of crop production. Physiology of Crop Production explores management strategies for: ideal plant architecture maximizing root systems ideal yield components maximizing photosynthesis maximizing source-sink relationship sequestration of carbon dioxide reducing the effects of drought improving N, P, K, Ca, Mg, and S nutrition improving micronutrient uptake Physiology of Crop Production is an essential desktop resource for plant physiologists, soil and crop scientists, breeders, agronomists, agronomy administrators in agro-industry, educators, and upper-level undergraduate and graduate students.
Book Synopsis The Theory of the Design of Experiments by : D.R. Cox
Download or read book The Theory of the Design of Experiments written by D.R. Cox and published by CRC Press. This book was released on 2000-06-06 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why study the theory of experiment design? Although it can be useful to know about special designs for specific purposes, experience suggests that a particular design can rarely be used directly. It needs adaptation to accommodate the circumstances of the experiment. Successful designs depend upon adapting general theoretical principles to the spec
Book Synopsis Osmolytes and Plants Acclimation to Changing Environment: Emerging Omics Technologies by : Noushina Iqbal
Download or read book Osmolytes and Plants Acclimation to Changing Environment: Emerging Omics Technologies written by Noushina Iqbal and published by Springer. This book was released on 2015-12-16 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The continual change in climatic conditions induces a series of adaptations in plants to suit the unfavorable conditions for sustainable agriculture. For sustainable agriculture, it is important to unravel the precise mechanism(s) that disturb the homeostatic equilibrium at cellular and molecular level and also to enhance understanding to build strategies for the tolerance of plants. Osmolytes have long been identified as pivotal abiotic stress busters because of their role in plants in overcoming extremely harsh environmental conditions. This edited compilation attempts to put forth the scattered knowledge on osmolytes and their role in abiotic stress tolerance together and disseminate as a package to deal with the problems of lower productivity under stressful environment. It will enhance the understanding on osmolytes function and bioengineering of plants for abiotic stress tolerance. The book covers very interesting topics dealing with various osmolytes and the mechanistic approach for abiotic stress tolerance to pave the path of agricultural scientists, breeders for developing high yielding sustainable transgenic crops.
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 Soil Ecotoxicology by : Joseph Tarradellas
Download or read book Soil Ecotoxicology written by Joseph Tarradellas and published by CRC Press. This book was released on 1996-12-23 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils are receptacles for a wide range of hazardous chemicals generated by human activities. Whether or not this contamination is deliberate, accurate toxicity assessments are important for health and economic reasons. Soil Ecotoxicology discusses the sources, fate, and transport of hazardous chemicals in soils. The fate (biodegradation and modeling) and the potential impacts of pesticides on soil ecosystems are emphasized, and methodologies for performing toxicity assessments are provided.
Book Synopsis Microplastic Pollutants by : Christopher Blair Crawford
Download or read book Microplastic Pollutants written by Christopher Blair Crawford and published by Elsevier. This book was released on 2016-11-29 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microplastic Pollutants introduces the reader to the growing problem of microplastic pollution in the aquatic environment and is the first ever book dedicated exclusively to the subject of microplastics. Importantly, this timely full-colour illustrated multidisciplinary book highlights the very recent realization that microplastics may transport toxic chemicals into food chains around the world. Microplastic pollutants is currently an important topic in both industry and academia, as well as among legislative bodies, and research in this area is gaining considerable attention from both the worldwide media and scientific community on a rapidly increasing scale. Ultimately, this book provides an excellent source of reference and information on microplastics for scientists, engineers, students, industry, policy makers and citizens alike.
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.
