Influencia da densidade da semente de sorgo na germinacao, vigor e produtividade

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ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Influencia da densidade da semente de sorgo na germinacao, vigor e produtividade by : D.J. Vieira

Download or read book Influencia da densidade da semente de sorgo na germinacao, vigor e produtividade written by D.J. Vieira and published by . This book was released on 1981 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sementes das cultivares de sorgo (Sorghum bicolor L. Moench), EA-955 (granifero) e EA-116 (forrageiro) foram separados atraves da mesa gravitacional em seis classes de densidades. Um setimo tratamento incluiu sementes nao classificadas. Avaliou-se a influencia da densidade da semente na germinacao, no vigor e na producao de graos. Os trabalhos foram conduzidos no Laboratorio de Sementes, em Fortaleza, CE., pertencentes ao Centro de Ciencias Agrarias da Universidade Federal do Ceara, no periodo de abril a setembro de 1980. A qualidade da semente foi avaliada, pelo peso volumetrico, peso de 100 sementes, teor de proteina, porcentagem de germinacao, comprimento de raiz, peso seco de plantulas, velocidade de emergencia, peso seca da parte aerea e populacao inicial .A produtividade foi tambem avaliada em uma area irrigada. Sementes das duas cultivares responderam ao efeito da densidade, apresentando o mesmo comportamento. Os resultados indicaram que o peso volumetrico e o peso 100 sementes foram estritamente relacionados com a densidade da semente. Sementes de alta densidade apresentaram menor teor de proteina, porem foram mais vigorosas, apresentando maior poder germinativo, mais rapida emergencia, originando plantulas mais desenvolvidas. Entretanto, nao foram observadas diferencas significativas quando se avaliou a producao de graos por area.

Influencia da densidade da semente de feijao (Phaseolus vulgaris L.) na germinacao no vigor e na produtividade da planta

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ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (78 download)

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Book Synopsis Influencia da densidade da semente de feijao (Phaseolus vulgaris L.) na germinacao no vigor e na produtividade da planta by : J.M. da CUNHA

Download or read book Influencia da densidade da semente de feijao (Phaseolus vulgaris L.) na germinacao no vigor e na produtividade da planta written by J.M. da CUNHA and published by . This book was released on 1976 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Qualidade da semente e densidade de semeadura no estabelecimento e na produtividade do milho

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ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Qualidade da semente e densidade de semeadura no estabelecimento e na produtividade do milho by : C. Andreoli

Download or read book Qualidade da semente e densidade de semeadura no estabelecimento e na produtividade do milho written by C. Andreoli and published by . This book was released on 2002 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uma das principais causas da baixa produtividade de milho é a qualidade da semente, que afeta o estande inicial, o vigor das plantas, e conseqüentemente, a produtividade. O objetivo deste trabalho foi determinar o efeito da qualidade da semente e a densidade de semeadura no estabelecimento e na produtividade de milho. Quatro lotes de sementes de milho BRS 201, com germinação de 95%, 90%, 85% e 75%, foram semeados em três densidades de semeadura: 50, 60 e 70 mil sementes/ha, nos anos de 1996/97 e 1997/98. A baixa qualidade da semente provocou reduções acentuadas na emergência de campo, no número de plantas e, conseqüentemente, na produtividade do milho BRS 201.O aumento da densidade de 50 para 70 mil sementes/ha, na semeadura, não compensou a redução da qualidade da semente. Para o acréscimo de 15% na germinação, foi observado, em média, um ganho de produtividade de 30%. Com base nos resultados destes trabalho, recomenda-se aos produtores de milho a utilização de lotes de sementes com germinação superior a 90% e densidade de semeadura entre 50 e 60 mil sementes/ha.

Densidade populacional de sorgo e seus efeitos na produtividade e qualidade da semente

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ISBN 13 :
Total Pages : 79 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Densidade populacional de sorgo e seus efeitos na produtividade e qualidade da semente by : J.J.B.N. Xavier

Download or read book Densidade populacional de sorgo e seus efeitos na produtividade e qualidade da semente written by J.J.B.N. Xavier and published by . This book was released on 1985 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estudo realizado para avaliacao dos efeitos de diferentes densidades populacionais sobre o desenvolvimento, produtividade da planta e qualidade da semente de sorgo granifero e forrageiro. Em condicoes de campo, foram desenvolvidos dois ensaios (um de sorgo granifero, outro, forrageiro),compreendendo, cada um, seis diferentes densidades de plantas por metro linear. Em condicoes de laboratorio, dois outros ensaios foram realizados com sementes procedentes dos experimentos de campo, com o objetivo de se determinar o peso volumetrico da semente, peso de 1000 sementes, percentagem de germinacao, comprimento de raiz de plantula e peso seco de plantula. Dos resultados obtidos, concluiu-se que para a obtencao de sementes de sorgo em quantidades e qualidades satisfatorrias, sao necessarias populacoes adequadas, de modo que a competicacao entre as plantas atinja determinado grau de eficiencia e, assim, permitir um equilibrio entre as fases vegetativas e reprodutivas da cultura.

Influência do tamanho, da profundidade e densidade de plantio da semente sobre a germinação, vigor e produtividade do gergelim (Sesamum indicum L.).

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ISBN 13 :
Total Pages : 54 pages
Book Rating : 4.:/5 (78 download)

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Book Synopsis Influência do tamanho, da profundidade e densidade de plantio da semente sobre a germinação, vigor e produtividade do gergelim (Sesamum indicum L.). by : F. das C. A. PAZ

Download or read book Influência do tamanho, da profundidade e densidade de plantio da semente sobre a germinação, vigor e produtividade do gergelim (Sesamum indicum L.). written by F. das C. A. PAZ and published by . This book was released on 1986 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introdução; Revisão de literatura; Material e métodos; Base física do experimento e cultivar estudada; Classes de tamanho da semente; Parâmetros estudados; Procedimentos estatísticos; Percentural de germinação; Comprimento da raiz e peso seca de plântula; Tamanho de semente e profundidade de plantio; Tamanho de semente e densidade de plantio.

Influencia do vigor da semente de sorgo (Sorghum bicolor (L.) Moench) no desempenho das plantas

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ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Influencia do vigor da semente de sorgo (Sorghum bicolor (L.) Moench) no desempenho das plantas by : J.R.F. Machado

Download or read book Influencia do vigor da semente de sorgo (Sorghum bicolor (L.) Moench) no desempenho das plantas written by J.R.F. Machado and published by . This book was released on 1978 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fertilizing for High Yield and Quality

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ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.:/5 (891 download)

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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.

Acta Scientiarum

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ISBN 13 :
Total Pages : 1092 pages
Book Rating : 4.A/5 ( download)

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Book Synopsis Acta Scientiarum by :

Download or read book Acta Scientiarum written by and published by . This book was released on 2002 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Pulping the South

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Publisher : Zed Books
ISBN 13 : 9781856494380
Total Pages : 290 pages
Book Rating : 4.4/5 (943 download)

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Book Synopsis Pulping the South by : Ricardo Carriere

Download or read book Pulping the South written by Ricardo Carriere and published by Zed Books. This book was released on 1996-08-15 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: The expansion of the pulp and paper industry is one of the most important causes of land and water conflicts in the South. This book examines the threat to livelihood, soil and biodiversity generated by large-scale pulpwood plantations in the South.

The Physiology of Vegetable Crops, 2nd Edition

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Publisher : CABI
ISBN 13 : 1786393778
Total Pages : 511 pages
Book Rating : 4.7/5 (863 download)

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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.

Proximal Soil Sensing

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Publisher : Springer Science & Business Media
ISBN 13 : 9048188598
Total Pages : 440 pages
Book Rating : 4.0/5 (481 download)

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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.

Australian Journal of Agricultural Research

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ISBN 13 :
Total Pages : 442 pages
Book Rating : 4.:/5 (6 download)

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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:

Physiology of Crop Production

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Publisher : CRC Press
ISBN 13 : 9781560222897
Total Pages : 366 pages
Book Rating : 4.2/5 (228 download)

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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.

Southern Forages

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ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.:/5 (89 download)

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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:

Brazilian journal of agricultural research

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ISBN 13 :
Total Pages : 642 pages
Book Rating : 4.3/5 (243 download)

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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 1988 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Consumptive Use of Water and Irrigation Water Requirements

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ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.3/5 (91 download)

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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:

BOTANAL

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ISBN 13 : 9780643053212
Total Pages : 24 pages
Book Rating : 4.0/5 (532 download)

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Book Synopsis BOTANAL by : Campbell Kenneth McDonald

Download or read book BOTANAL written by Campbell Kenneth McDonald and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: