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Influencia Do Vigor Da Semente De Arroz Oryza Sativa L No Desempenho Das Plantas
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Book Synopsis Influência do vigor da semente de arroz (Oryza sativa L.) no desempenho das plantas by : S. P. Costa
Download or read book Influência do vigor da semente de arroz (Oryza sativa L.) no desempenho das plantas written by S. P. Costa and published by . This book was released on 1976 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deterioração das sementes. Vigor das sementes. Vigor das sementes e desempenho das plantas. Variedade. Germinação. Comprimento das plântulas. Velocidade de emergência. Número de pertilhos. Altura da planta. Número de espiguetas normais por panícula. Porcentagem de espiguetas chochas por parnícula. Produção.
Book Synopsis Influência do peso da semente de arroz (Oryza sativa L.) sobre a germinação, vigor e produção de grãos by : S. M. Cicero
Download or read book Influência do peso da semente de arroz (Oryza sativa L.) sobre a germinação, vigor e produção de grãos written by S. M. Cicero and published by . This book was released on 1976 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: O objetivo principal do presente trabalho foi determinar através de testes de laboratório e ensaio de campo, a importância do peso das sementes de arroz (Oryza sativa L.). Utilizaram-se sementes das variedades Batatas, Pratão Precoce, IAC-120, IAC-435 e IAC-1246. Pela revisão de literatura, ficou evidente a importância do peso e tamanho das sementes em diversas espécies, com relação à germinação, vigor e produção. Entre os trabalhos consultados poucos se referiam ao arroz, sendo a maioria deles de origem estrangeira, justificando dessa forma a realização deste trabalho. Este foi conduzido no Laboratório de Sementes e em Terreno Irrigado do Departamento de Agricultura e Horticultura da Escola Superior de Agricultura "Luiz de Queiroz" , no período de novembro de 1973 a janeiro de 1975. As sementes das cinco variedades, foram separadas em quatro classes de peso específico em uma Mesa Gravitacional, tendo-se em seguida submetido cada uma das quatro classes à ação de ventilação controlada através de um assoprador. permitindo a separação de cada classe em três frações com pesos diferentes. isto ê. leve. média e pesada. Posteriormente. reuniram-se frações leves das quatro classes. para se formar uma única classe de sementes leves de cada variedade. procedendo-se da mesma forma com as frações médias e pesadas. As sementes leves. médias e pesadas. assim obtidas. foram armazenadas em câmara seca e laboratório e utilizadas nos experimentos de laboratório e de campo. Os testes de germinação e vigor (avaliado pelo método do Envelhecimento Rápido) foram efetuados em três épocas (março/abril. julho e dezembro de 1974). utilizando-se como delineamento experimental um fatorial 3 x 2, cujas variáveis foram três pesos e dois ambientes de conservação das sementes. com quatro repetições. O ensaio de campo foi realizado no período de outubro de 1974 a março de 1975 utilizando-se o mesmo delineamento experimental. porém, com três repetições. As análises dos dados e a interpretação dos resultados obtidos permitiram que se chegassem às seguintes conclusões: a) nas cinco variedades estudadas. a germinação e o vigor foram afetados pelo peso das sementes; b) as sementes pesadas e médias apresentaram uma maior porcentagem de germinação e também se mostraram mais vigorosas que as sementes leves em todas as variedades estudadas; c) este efeito foi menos intenso no caso das sementes das variedades Batatais e IAC-1246; d) o ambiente de câmara seca mostrou-se superior ao de laboratório para a conservação das sementes; e) o ensaio de campo não revelou nenhum efeito do peso das sementes sobre a emergência, numero de colmos férteis e produção de grãos; f) as sementes das variedades Batatais, IAC-120 e IAC-435 armazenadas em câmara seca deram origem a uma maior emergência de plântulas no campo, com maior numero de colmos.
Book Synopsis Influência do tamanho e do peso da semente de arroz (Oryza sativa L.) sobre a germinação, o vigor e a produção de grãos by : A. S. Dias
Download or read book Influência do tamanho e do peso da semente de arroz (Oryza sativa L.) sobre a germinação, o vigor e a produção de grãos written by A. S. Dias and published by . This book was released on 1978 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estudo da influencia do tamanho e do peso de sementes de arroz (Oryza sativa L.) sobre a germinacao e o vigor by : E.B. Ferraz
Download or read book Estudo da influencia do tamanho e do peso de sementes de arroz (Oryza sativa L.) sobre a germinacao e o vigor written by E.B. Ferraz and published by . This book was released on 1974 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts by : Escola Superior de Agricultura "Luiz de Queiroz."
Download or read book Dissertation Abstracts written by Escola Superior de Agricultura "Luiz de Queiroz." and published by . This book was released on 1977 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influencia da adubacao nitrogenada sobre a qualidade fisiologica de sementes de arroz (Oryza sativa L.). by : N.P. da COSTA
Download or read book Influencia da adubacao nitrogenada sobre a qualidade fisiologica de sementes de arroz (Oryza sativa L.). written by N.P. da COSTA and published by . This book was released on 1978 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: O presente trabalho teve como objetivo principal testar os efeitos de quatro niveis e quatro epocas de aplicacao de nitrogenio sobre a qualidade fisiologica de sementes de quatro cultivares de arroz irrigado. A qualidade fisiologica das sementes foi avaliada atraves de testes de laboratorio e em casa de vegetacao, para determinar a germinacao, vigor e conteudo de proteinas. Os testes de vigor empregados foram: envelhecimento precoce, velocidade de emergencia, populacao inicial e peso da parte aerea das plantulas. As sementes testadas foram produzidas em solo pertencente a unidade de mapeamento Pelotas, que foi classificada, segundo criterios adotados eplo Servico Nacional de Levantamento de Solos, como Planossol, textura argilosa, relevo plano, substratos de sedimentos aluviais recentes (granitos) e, segundo o "Sistema Compreensivo Americano (7a. aproximacao)", como Albaqualf. O experimento constituiu-se em um fatorial sem repeticao, delineamnto em blocos ao acaso, e foi semeado em 19.11.76. As cultivares utilizadas foram EEA-406, IAS-12-9 Formosa, Bluebelle e IRGA-408, todas recomendadas pela CESARROZ-RS para cultivo no Rio Grande do Sul. Foram testadas em quatro niveis de nitrogenio - 30, 60, 90 e 120 kg/ha, aplicados cada um em quatro epoca: na base, (epoca 1); 1/3 na base e 2/3 na diferenciacao do primordio floral (epoca 2); no dia da inundacao; imediatamente antes da mesma epoca 3); 5 dias apos a inundacao (epoca 4). A adubacao de 100 kg/ha de P2O5 + 80 kg/ha de K2O aplicados na base. A densidade de semeadura foi de 560 sementes viaveis/m para a cultivar Bluebelle e de 400 sementes/m para as demais cultivares. Previamente a analise estatistica dos resultados, os dados expressos em percentagem foram transformados em arco seno X/100. Considerando-se as analises do resultados dos testes de germinacao, vigor e conteudo de proteinas das sementes, chegou-se as seguintes conclusoes ressalvando-se o carater preliminar deste trabalho: a) nao houve influencia da adubacao nitrogenada, nem quanto a niveis e nem quanto a epocas de aplicacao, sobre a qualidade fisiologica de sementes de arroz; b) o desempenho das sementes de cada cultivar nao foi o mesmo nos testes de germinacao, vigor e teor de proteinas das sementes; c) as sementes da cultivar IRGA-408 apresentaram o melhor desempenho na maior parte dos testes; d) as sementes da cultivar IAS-12-9 Formosa foram as que apresentaram menor potencial de armazenamento; e, e) as cultivares IRGA-408 e Blubelle apresentaram maior conteudo de proteina nas sementes. Porem, considerando-se que o teor de proteina nas sementes nao apresentou variacao significativa, tanto em funcao de niveis, como de apocas de aplicacao de nitrogenio, sugere-se que estudos mais detalhados, onde se tenha um nivel zero (0) de nitrogenio, sejam levados a efeito, para que conclusoes mais bem embasadas possam ser emitidas a respeito deste tema.
Download or read book Agrindex written by and published by . This book was released on 1977 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Host Bibliographic Record for Boundwith Item Barcode 30112100650693 and Others by :
Download or read book Host Bibliographic Record for Boundwith Item Barcode 30112100650693 and Others written by and published by . This book was released on 2013 with total page 1538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Herbicides written by Andrew Price and published by BoD – Books on Demand. This book was released on 2013-06-12 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Herbicide use is a common component of many weed management strategies in both agricultural and non-crop settings. However, herbicide use practices and recommendations are continuously updated and revised to provide control of ever-changing weed compositions and to preserve efficacy of current weed control options. Herbicides - Current Research and Case Studies in Use provides information about current trends in herbicide use and weed control in different land and aquatic settings as well as case studies in particular weed control situations.
Book Synopsis Seed Testing by : Sabry Gobran Elias
Download or read book Seed Testing written by Sabry Gobran Elias and published by . This book was released on 2012 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: An essential reference for students, seed technologists, researchers, and seed industry personnel, this comprehensive guide outlines the most widely performed modern seed quality tests, explores the principles behind them, the history of seed testing, why seeds are tested and when, and sampling, sub-sampling, seed laboratory management, accreditation, and seed quality assurance programs. The authors describe statistical applications to seed testing and tolerances, and they provide a detailed morphological and structural description of seed formation and development. The book examines the testing of genetic traits and transgenic seeds, including DNA and protein genetic purity tests, and cultivar purity identification for conventional seeds. In addition to the most common seed purity and viability tests, tests for seed and seedling vigor, seed-borne diseases and seed moisture determination are also discussed.
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 1982 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
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 Nitrogen Fixation in Agriculture, Forestry, Ecology, and the Environment by : Dietrich Werner
Download or read book Nitrogen Fixation in Agriculture, Forestry, Ecology, and the Environment written by Dietrich Werner and published by Springer Science & Business Media. This book was released on 2005-10-24 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainability has a major part to play in the global challenge of continued development of regions, countries, and continents all around the World and biological nitrogen fixation has a key role in this process. This volume begins with chapters specifically addressing crops of major global importance, such as soybeans, rice, and sugar cane. It continues with a second important focus, agroforestry, and describes the use and promise of both legume trees with their rhizobial symbionts and other nitrogen-fixing trees with their actinorhizal colonization. An over-arching theme of all chapters is the interaction of the plants and trees with microbes and this theme allows other aspects of soil microbiology, such as interactions with arbuscular mycorrhizal fungi and the impact of soil-stress factors on biological nitrogen fixation, to be addressed. Furthermore, a link to basic science occurs through the inclusion of chapters describing the biogeochemically important nitrogen cycle and its key relationships among nitrogen fixation, nitrification, and denitrification. The volume then provides an up-to-date view of the production of microbial inocula, especially those for legume crops.
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
Book Synopsis Aromatic and Medicinal Plants by : Hany El-Shemy
Download or read book Aromatic and Medicinal Plants written by Hany El-Shemy and published by BoD – Books on Demand. This book was released on 2017-03-15 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers interesting research topics and the use of natural resources for medical treatments in some severe diseases. The most important message is to have native foods which contain high amount of active compounds that can be used as a medicinal plant. Most pharmaceutical drugs were discovered from plants, and still ongoing research will have to predict such new active compounds as anti-diseases. I do believe this book will add significant knowledge to medical societies as well as can be used for postgraduate students.
Book Synopsis Plant Nematology, 3rd Edition by : Roland N. Perry
Download or read book Plant Nematology, 3rd Edition written by Roland N. Perry and published by CABI. This book was released on 2024-07-12 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant-parasitic nematodes are a major threat to crop production in all countries, and identification of nematodes and knowledge of their biology is of paramount importance. Providing a broad introduction to nematodes as plant parasites, this book begins by describing nematodes by genera, and then builds on this foundation to detail nematode biology and pest management, including resistance, and biological and chemical control. This 3rd edition is updated to address advances in our knowledge of plant-parasitic nematodes, particularly concerning the molecular aspects of host-parasite relationships, including the application of genomics to nematode biology. Changes in control and management strategies are also covered. The influence of climate change on plant-parasitic nematodes is addressed in a new chapter on ecology. Primarily aimed at students (MSc and PhD), this book is also invaluable for researchers and lecturers in nematology, plant pathology and parasitology, advisory and quarantine services, and crop protection scientists.
