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Comportamento De Cultivares De Milho Sob Irrigacao Em Diferentes Densidades E Doses De Nitrogenio
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Book Synopsis Comportamento de cultivares de milho sob irrigacao em diferentes densidades e doses de nitrogenio by : G.E.de FRANCA
Download or read book Comportamento de cultivares de milho sob irrigacao em diferentes densidades e doses de nitrogenio written by G.E.de FRANCA and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Avaliação das influências de dois tipos de solo e suas disponibilidades de água sobre o rendimento de cultivares de milho, densidades de plantas e adubação nitrogenada by : N. E. Suzin
Download or read book Avaliação das influências de dois tipos de solo e suas disponibilidades de água sobre o rendimento de cultivares de milho, densidades de plantas e adubação nitrogenada written by N. E. Suzin and published by . This book was released on 1970 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: As condicoes climaticas aliadas a baixa capacidade de retencao de agua no solo, durante a safra de 1967/68, nao foram ideais para a producao de milho. Em Vacaria, a producao foi reduzida devido a deficiencia de agua durante o periodo critico, aquele que vai do pendoamento ao embonecamento e inicio da formacao da espiga. Em Guaiba, a reducao de rendimento foi causada pela falta de agua no periodo de rapido crescimento, antes do embonecamento e apos a inicio da formacao da espiga. Os cultivares locais estao melhores adaptados as condicoes climaticas no Rio Grande do Sul em 1967/68, em ambas as localidades. Entretanto, o cultivar Dekalb 1006 produziu bem nas duas regioes. As producoes dos cultivares Funks 5H14, Dixie 82 e NC 27 nao forma diferentes estatisticamente, em Vacaria, indicando que a introducao destes cultivares pode ter lugar nesta regiao, particularmente sob condicoes de alto manejo e num ano normal. A producao de milho pode ser aumentada pela adocao de maiores densidades de plantas do que as comumente usadas. As maiores producoes obtidas, na safra 1967/68, um ano muito seco, foram em Guaiba, para densidades em torno de 45000 plantas por hectare e, em Vacaria para 25000 a 3000 plantas. Doses de nitrogenio nao aumentaram o rendimento de graos de milho em Guaiba, na safra de 1967/68, devido a umidade do solo ser fator mais importante do que a adubacao nitrogenada, limitando, por conseguinte, a producao. A quantidade de agua disponivel usada pelas culturas e maior no solo Arroio dos Ratos do que (...).
Book Synopsis Comportamento da cultivar de milho (Zea mays L.) 'Piranão', em diferentes níveis de nitrogênio, espaçamentos e densidades by : J. Soare Sobrinho
Download or read book Comportamento da cultivar de milho (Zea mays L.) 'Piranão', em diferentes níveis de nitrogênio, espaçamentos e densidades written by J. Soare Sobrinho and published by . This book was released on 1981 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: A grande capacidade de utilização de luz pelas plantas de milho, torna-se necessário desevolver técnicas que permitam um melhor aproveitamento da energia luminosa que chega à superfície de terra. Uma das maneiras de aumentar a captação de energia luminosa, consiste em ampliar a superfície fotossinteticamente ativa, através do estudo de cultivares de porte e arquitetura adequados à penetração de luz em diversas populações de plantas, e sua respectivas respostas a diferentes níveis de nitrogênio, responsável pelo desenvolvimento vegetativo e pelo verde intanso das folhas.
Book Synopsis Comportamento de milho (Zea mays, L.) braquitico-2 em diferentes densidades de plantio by : D.R. Leite
Download or read book Comportamento de milho (Zea mays, L.) braquitico-2 em diferentes densidades de plantio written by D.R. Leite and published by . This book was released on 1973 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: A finalidade deste trabalho foi a de avaliar possibilidades do milho Piranao em relacao a variedade Centralmax e ao hibrido duplo AG-257, em dois espacamentos entre linhas e tres populacoes de plantas/ha. O ensaio foi conduzido durante o ano agricola 1972/1973 nos campos experimentais do Departamento de Genetica da E.S.A. Luiz de Queiroz em Piracicaba, Sao Paulo,. Foram testados os espacamentos de 100 e 75 cm entre linhas e populacoes de 40 e 80 e 120 mil plantas/ha. Todos tratamentos receberam uma adubacao correspondente a 180 Kg de N, 120kg de P2O5 e 60 kg de K2O, por hectare. A dose de nitrogenio foi parcelada em duas aplicacoes, sendo um terco por ocasioes do plantio e o restante, em cobertura, apos quarenta e cinco dias. Utilizou-se o delineamento experimental de blocos ao acaso com parcelas sub-subdivididas, com cinco repeticoes. Os cultivares foram colocados na parcelas, os espacamentos entre linhas nas sub-parcelas e as populacoes de plantas nas sub-parcelas. (...).
Book Synopsis Comportamento de hibridos de milho tardio, precoce e superprecoce, na epoca de "safrinha". submetidos a diferentes niveis de nitrogenio by : A.R. de M.B. BRITO
Download or read book Comportamento de hibridos de milho tardio, precoce e superprecoce, na epoca de "safrinha". submetidos a diferentes niveis de nitrogenio written by A.R. de M.B. BRITO and published by . This book was released on 1995 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Entre as alternativas de culturas temporárias, a cultura do milho "safrinha" vem apresentando bom resultado economico nos ultimos anos, em decorrencia do comportamento favoravel do clima e o baixo custo de producao. Os objetivos do presente trabalho referem-se a avaliacao do comportamento de hibridos de milho de ciclos diferentes, semeados na epoca de "safrinha", bem como ao estudo do periodo de duracao do enchimento de graos, sob a influencia de diferentes niveis de nitrogenio. O experimento foi conduzido em area pertencente ao Departamento de Agricultura da Escola Superior de Agricultura "Luiz de Queiroz", da Universidade de Sao Paulo, no periodo de janeiro a junho de 1993, em solo classificado como Terra Roxa Estruturada eutrofica. Foram avaliados, tres cultivares de milho de diferentes ciclos, ou seja, tardio, precoce e superprecoce,e quatro doses de nitrogenio, sendo 0, 50, 100 e 150 kg/ha de N. A coleta de dados foi iniciada a partir do florescimento. Para os caracteres agronomicos avaliaram-se: indice de area foliar, altura da planta e graus-dia, enquanto que para os caracteres de producao avaliaram-se: numero de espigas por planta, comprimento da espiga, peso da espiga, producao de graos e materia seca do grao. Pela analise dos resultados concluiu-se que: a) Para a semeadura do milho na epoca de "safrinha:, a interacao genotipo-ambiente, assume acentuada importancia; b) Na "safrinha", hibridos que apresentam longo periodo de enchimento de graos e acumulo uniforme de materia seca no periodo, (...).
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 agronômica written by and published by . This book was released on 1995 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bacterial Diversity in Sustainable Agriculture by : Dinesh K. Maheshwari
Download or read book Bacterial Diversity in Sustainable Agriculture written by Dinesh K. Maheshwari and published by Springer. This book was released on 2014-09-04 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The earth’s biodiversity is a degree of ecosystem health which is vital to ecology and environmental sustainability. The microbial world is the largest unexplored reservoir. The agro-ecosystem enriched with rhizosphere implicit abundant and species-rich component of microbial diversity. Its global exploration designs a worldwide framework for agricultural sustainability adjoining benefits in its conservation. Agricultural sustainability requires a major share from ecosystem management which is better paid by microbial diversity and conservation. Diversity of bacteria influences plant productivity providing nutrient convenience from soil instead altering per se community and diversity in the rhizosphere where they may influence mechanistic competent and antagonistic micro-flora. The potential species among the diversity are therefore, essential subjective to their maintenance for use around the globe. Microbial population in agro-ecosystem is influenced by stresses, reduce functionality as a component. It is therefore, important to explore secrets of planned strategy so as to unravel the microbial diversity and conservation in agricultural development. Microorganisms are minute, pervasive in nature and alleged as disease host instead tiny recognize as employee of agro-ecosystem, indulge in agricultural development and potential contributor in world of ecological and economical wealth creation. This step pertinently would help to launch scientific motivation needed to support the refrain of microbial diversity and conservation.
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9789251047057 Total Pages :164 pages Book Rating :4.0/5 (47 download)
Book Synopsis Cactus (Opuntia Spp.) as Forage by : Food and Agriculture Organization of the United Nations
Download or read book Cactus (Opuntia Spp.) as Forage written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2001 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Opuntias are multipurpose plants that are increasingly being used in agricultural systems in arid and semi-arid areas. Due to its high water-use efficiency, it is particularly useful as forage in times of drought and in areas where few other crops can grow, and it is now considered a key component for the productivity and sustainability of these regions. This publication presents current scientific and practical information on the use of the cactus Opuntia as forage for livestock.
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:
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 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.
Book Synopsis Applications of Soil Physics by : Daniel Hillel
Download or read book Applications of Soil Physics written by Daniel Hillel and published by Elsevier. This book was released on 2012-12-02 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applications of Soil Physics deals with the applications of soil physics and covers topics ranging from infiltration and surface runoff to groundwater drainage, evaporation from bare-surface soils, and uptake of soil moisture by plants. Water balance and energy balance in the field are also discussed, along with tillage and soil structure management. The development and extension of Penman's evaporation formula is also described. This book is comprised of 14 chapters and begins with a systematic description of the field-water cycle and its management, with emphasis on infiltration and runoff; redistribution and drainage; evaporation and transpiration; and irrigation and tillage. Subsequent chapters focus on transpiration from plant canopies; freezing phenomena in soils; scaling and similitude of soil-water phenomena; spatial variability of soil physical properties; and movement of solutes during infiltration into homogeneous soil. Concepts of soil-water availability to plants are considered, together with principles of irrigation management and the advantages and limitations of drip irrigation. This monograph is intended for upper-level undergraduate and graduate students of the environmental, engineering, and agronomic sciences.
Book Synopsis Australian Journal of Agricultural Research by :
Download or read book Australian Journal of Agricultural Research written by and published by . This book was released on 2000 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 The Root Causes of Biodiversity Loss by : Alexander Wood
Download or read book The Root Causes of Biodiversity Loss written by Alexander Wood and published by Routledge. This book was released on 2013-11-05 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world is losing species and biodiversity at an unprecedented rate. The causes go deep and the losses are driven by a complex array of social, economic, political and biological factors at different levels. Immediate causes such as over-harvesting, pollution and habitat change have been well studied, but the socioeconomic factors driving people to degrade their environment are less well understood. This book examines the underlying causes. It provides analyses of a range of case studies from Brazil, Cameroon, China, Danube River Basin, India, Mexico, Pakistan, Philippines, Tanzania and Vietnam, and integrates them into a new and interdisciplinary framework for understanding what is happening. From these results, the editors are able to derive policy conclusions and recommendations for operational and institutional approaches to address the root causes and reverse the current trends. It makes a contribution to the understanding of all those - from ecologists and conservationists to economists and policy makers - working on one of the major challenges we face.
Book Synopsis Southern Forages by : Donald M. Ball
Download or read book Southern Forages written by Donald M. Ball and published by . This book was released on 1996 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
