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Efeitos De Faixas De Umidade Do Solo Sobre A Producao E Os Componentes Da Producao De Cultivares Tradicionais E Melhoradas De Arroz Oryza Sativa L De Sequeiro
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Book Synopsis Efeitos de faixas de umidade do solo sobre a produção e os componentes da produção de cultivares tradicionais e melhoradas de arroz (Oryza sativa L.) de sequeiro by : J. A. Pereira
Download or read book Efeitos de faixas de umidade do solo sobre a produção e os componentes da produção de cultivares tradicionais e melhoradas de arroz (Oryza sativa L.) de sequeiro written by J. A. Pereira and published by . This book was released on 1992 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: A deficiência hídrica reduziu a área foliar das cultivares Caqui, Vermelho, IAC 165 e Guarani; Afetou também a fase reprodutiva do arroz, ocasionando decréscimo de 14% no número de perfilhos; a influência do déficit hídrico obedeceu a seguinte ordem decrescente: número de panículas, número de espiguetas por panícula, comprimento de panícula, peso de grãos e percentagem de grãos cheios; O limite mínimo de umidade do solo, nas fases vegetativa e reprodutiva, para não causar redução acentuada na produção de grãos do arroz foi o correspondente a 80% da capacidade de campo.
Book Synopsis Efeitos do espaçamento e da densidade de semeadura sobre os componentes da produção de três cultivares de arroz (Oryza sativa L.), em condições de várzea alta do Rio Guamá - Estado do Pará by : L. A. F. Pereira
Download or read book Efeitos do espaçamento e da densidade de semeadura sobre os componentes da produção de três cultivares de arroz (Oryza sativa L.), em condições de várzea alta do Rio Guamá - Estado do Pará written by L. A. F. Pereira and published by . This book was released on 1984 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: O presente trabalho foi conduzido no Campo Experimental do Centro de Pesquisa Agropecuária do Trópico Úmi- do- CPATU/EMBRAPA, em Belém, Estado do Pará, no período de junho a outubro/1980, com o objetivo de se estudar os efeitos do espaçamento e da densidade de semeadura sobre diversos componentes da produção de três cultivares de arroz (Oryza sativa L.) em condições de solo de várzea alta do Rio Guamá. O delineamento experimental adotado foi um fatorial 3x3x3, distribuído em blocos casualizados com 27 trata mentos e 2 repetições. Os espaçamentos foram 0,30 m x 0,30 m, 0,30m x 0,15 m e 0,15 m x 0,15 rn, nas densidades de 2, 4 e 6 plantas/ cova, e as cultivares utilizadas foram: Apura, IAC-1246 e IAC- 25. Os tratamentos foram avaliados através dos seguintes parâmetros: altura de plantas, número total de colmos /cova, número de colmos férteis/cova, peso grãos/cova, peso de grãos/panícula, peso de 1.000 grãos, produção de grãos, rendimento no beneficiamento, relação grãos/palha e peso de matéria seca das plantas daninhas. As análises e interpretações dos resultados obtidos permitiram as seguintes conclusões: - A altura das plantas foi influenciada .pela densidade, atingindo maior desenvolvimento na menor densidade de semeadura. - A cultivar Apura apresentou maior número de colmos/cova e também maior número de colmos férteis/cova quando semeada nos menores espaçarnento e densidade." - Na menor densidade utilizada a cultivar Apura e IAC-1246 mostraram-se superiores a IAC-25, quanto ao peso de grãos/cova. - A cultivar IAC-1246 foi a que apresentou maior peso de grãos/panícula. - A produção de grãos, o rendimento no beneficiamento e o peso de 1.000 grãos das cultivares, não foram influenciados pelos espaçamentos e densidades testadas. - As cultivares Apura e IAC-1246 foram as que mostraram as maiores produções de grãos. - A relação grão/palha foi afetada pelo espaçamento e densidade, sendo que a cultivar IAC-1246 foi a que apresentou maior valor para esse parâmetro, seguido das cultivares Apura e IAC-25. - O desenvolvimento das ervas daninhas foi menor para semeaduras feitas na maior densidade utilizada e maior nas parcelas com a cultivar IAC-25.
Book Synopsis Efeito da adubação potássica em cultivares do arroz (Oryza sativa L.) de sequeiro sob défict hídrico, em solo sob cerrado by : Ataide Garcia de Carvalho Junior
Download or read book Efeito da adubação potássica em cultivares do arroz (Oryza sativa L.) de sequeiro sob défict hídrico, em solo sob cerrado written by Ataide Garcia de Carvalho Junior and published by . This book was released on 1987 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Efeitos da compactação do solo e da umidade sobre a absorção de N, P, K, os componentes de produção e a produtividade de grãos de arroz by : Roberto Dantas de Medeiros
Download or read book Efeitos da compactação do solo e da umidade sobre a absorção de N, P, K, os componentes de produção e a produtividade de grãos de arroz written by Roberto Dantas de Medeiros and published by . This book was released on 2004 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Efeitos da aplicacao de herbicidas no desenvolvimento, na producao e na qualidade fisiologica de sementes de arroz (Oryza sativa L.). by : H. B. S. da V. PESSOA
Download or read book Efeitos da aplicacao de herbicidas no desenvolvimento, na producao e na qualidade fisiologica de sementes de arroz (Oryza sativa L.). written by H. B. S. da V. PESSOA and published by . This book was released on 1984 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigar os efeitos da aplicacao de herbicidas sobre alguns parametros do desenvolvimento inicial da planta de arroz, sobre a sua producao desmembrada em componentes e sobre a qualidade fisiologica das sementes produzidas.
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 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 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.
Book Synopsis Compendium of Peanut Diseases by : N. Kokalis-Burelle
Download or read book Compendium of Peanut Diseases written by N. Kokalis-Burelle and published by American Phytopathological Society. This book was released on 1997 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compendium of Peanut Diseases, Second Edition is a guide to the identification, diagnosis, and control of peanut diseases and disorders. Bringing together color photographs and authoritative information in a single volume, this convenient compendium is a valuable resource for peanut growers and crop consultants around the world.This compendium has become a standard guidebook for the peanut industry. The contributors are an international group that includes 50 peanut experts from the United States, India, The Peoples Republic of China, Malawi, Australia, Israel, and South Africa. They offer advice on diseases and disorders found in each of the world's major peanut-growing regions.Detailed descriptions of 55 peanut diseases are the core of the book. Covering diseases caused by fungi, bacteria, nematodes, and viruses, these descriptions present detailed information on symptoms, causal organisms, disease cycle, control, host range, transmission, detection, and epidemiology. In addition to diseases, the compendium also describes peanut disorders caused by environmental stress, insects and arthropods, and parasitic flowering plants. Other sections of the compendium cover beneficial organisms, organisms with an undetermined relationship to peanuts, disease management strategies, genetic modification, and a listing of disease and insect resistant cultivars currently available for use by growers and breeders.
Book Synopsis Nematode Interactions by : M. Wajid Khan
Download or read book Nematode Interactions written by M. Wajid Khan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nematode interactions are important biological phenomena and of great significance in agriculture. It is a fascinating subject which is multidisciplinary by nature, and concerns any scientist involved with plant health. There have been marked advances in our knowledge of various aspects of the subject in the last two decades. This study area has been the subject of several reviews, but there was no exclusive text on the subject. This has stressed the need to document the information, developing a unifying theme which treated nematode interactions in a holistic manner. This book is about the inter action of plant-parasitic nematodes with other plant pathogens or root symbionts, the nature of their associations, their impact on the host and con sequential interactive effects on the involved organisms. Since nematodes are at the centre of the theme, the responsibility of understanding of other plant pathogens dealt with in this book is largely delegated to the reader. I have limited the book content to interactions with biotic pathogens and root symbionts only, for various reasons. The book embodies 16 chapters, and attempts to present balanced infor mation on various aspects of nematode interactions with other plant pathogens and root symbionts. Some chapters describe general aspects of the subject. Interactions of nematodes with specific groups of organisms are addressed in the remaining chapters.
Book Synopsis Viruses of Potatoes and Seed-potato Production by : J. A. de Bokx
Download or read book Viruses of Potatoes and Seed-potato Production written by J. A. de Bokx and published by . This book was released on 1987 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characterization and identification of potato viruses and viroids; Viruses, viroids, mycoplasmas and diseases with a virus-like; Viruses and potatoes.
