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Influencia De Niveis E Populacao De Plantas Sobre O Rendimento De Graos E Componentes Do Rendimento De Cultivares De Arroz Irrigado
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Book Synopsis Efeitos de niveis de nitrogenio e densidades de plantas sobre o rendimento de graos e outras caracteristicas agronomicas de duas cultivares de milho (Zea mays L.). by : J.B. Medeiros
Download or read book Efeitos de niveis de nitrogenio e densidades de plantas sobre o rendimento de graos e outras caracteristicas agronomicas de duas cultivares de milho (Zea mays L.). written by J.B. Medeiros and published by . This book was released on 1974 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Com a presente pesquisa, procurou-se observar os efeitos de quatro niveis de nitrogenio e quatro densidades de plantas no rendimento de graos e caracteristicas morfologicas de duas cultivares de milho. O ensaio foi estabelecido na Estacao Experimental Agronomico da UFRGS, em solo da unidade de mapeamento Arroio dos Ratos, no ano agricola de 1973/74. Utilizou-se a cultivar precoce DK 3S-40 e a tardia Agroceres-28 nas densidades de 35.000, 50.000, 65.000 e 80.000 plantas/ha e nos niveis de 20, 90 100 e 230 kg/ha de nitrogenio. Os resultados evidenciaram que a cultivar precoce produziu maior rendimento de graos que a tardia, na media dos tratamentos. Ambas as cultivares responderam, em aumento de producao de graos, ate o mais alto nivel de nitrogenio aplicado. Entretanto, na media dos niveis de nitrogenio, a cultivar precoce obteve o maximo rendimento de graos com 63.000 plantas/ha e a tardia com 35.000 plantas/ha. Para cada cultivar, a densidade otima variou conforme os niveis de nitrogenio. A precoce alcancou o maior rendimento de graos com o mais elevado nivel deste nutriente e densidade de 65.000 plantas/ha, sem se diferenciar estatisticamente da populacao de 80.000 plantas/ha. A maxima producao de graos da cultivar tardia ocorreu no maior nivel de nitrogenio e populacao de 35.000 plantas/ha. As duas cultivares aumentaram significativamente os componentes de rendimento de graos, peso medio de graos por espiga e numero de espigas por plantas, ate os niveis de 160 e 90 kg/ha de nitrogenio, respectivamente, (...).
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:
Book Synopsis Rendimento de graos, componentes de rendimento e outras caracteristicas de planta de tres cultivares de milho em duas epocas de semeadura by : J.A. Noldin
Download or read book Rendimento de graos, componentes de rendimento e outras caracteristicas de planta de tres cultivares de milho em duas epocas de semeadura written by J.A. Noldin and published by . This book was released on 1985 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ciência e cultura written by and published by . This book was released on 1977 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determinacao dos efeitos de quatro densidades de plantas no rendimento de graos e caracteristicas agronomicas em seis cultivares de milho by : P.R.F. da SILVA
Download or read book Determinacao dos efeitos de quatro densidades de plantas no rendimento de graos e caracteristicas agronomicas em seis cultivares de milho written by P.R.F. da SILVA and published by . This book was released on 1978 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: O presente trabalho visou determinar os efeitos de diferentes densidades de plantas sobre o rendimento de graos e caracteristicas morfologicas, em seis cultivares de milho. Instalou-se o experimento em solo serie Arroio dos Ratos, situado na Estacao Experimental Agronomica da UFRGS, regiao fisiografica da Depressao Central, no ano agricola de 1971/72. Utilizou-se cinco hibridos (Pioneer 309B, Weibull 120, Agroceres 8, Save 135 e Save 231) e um sintetico (Sintetico Aratiba IV) e as densidades de 30.000, 50.000, 70.000 e 90.000 plantas/ha. Conduziu-se o ensaio sob condicoes de alto nivel de manejo e de irrigacao. As cultivares Pioneer 309B e Weibull 120 atingiram o estadio de 50% do pendoamento uma semana antes que as demais cultivares, constituindo o grupo das precoces. Este grupo produziu em media 8.500 kg/ha, enquanto as tardias alcancaram rendimentos medios de 5.700 kg/ha. O sintetico Aratiba IV produziu o menor rendimento de graos (3.950 kg/ha), na media das densidades. Paras as cultivares tardias Agroceres 8, Save 231 e sintetico Aratiba IV as densidades que proporcionaram os maiores rendimentos de graos situaram-se no intervalo entre 50.000 e 70.000 plantas/ha. Ja as precoces e a tardia Save 135 tiveram as densidades otimas entre 70.000 e 90.000 plantas/ha. Na media das densidades, as cultivares precoces alcancaram maiores producoes de graos aumentaram com os sucessivos acrescimos nas densidades ate um determinado ponto, apos o que comecaram a diminuir. As cultivares precoces e a tardia Save 135 (...).
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 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influência de densidade de plantas e espaçamento entre linhas sobre o rendimento de grãos, intercepção de luz e outras características agronômicas de duas cultivares de milho (Zea mays L.). by : G. L. de SOUZA
Download or read book Influência de densidade de plantas e espaçamento entre linhas sobre o rendimento de grãos, intercepção de luz e outras características agronômicas de duas cultivares de milho (Zea mays L.). written by G. L. de SOUZA and published by . This book was released on 1976 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estudo realizado na Estação Experimental Agronômica da UFRGS durante o ano agrícola 1975/76 para determinar a resposta de duas densidades (40.000 e 60.000 plantas/ha) e quatro espaçamentos entre linhas (50, 70, 90, 110 cm) sobre o rendimento de grãos, bem como seus efeitos sobre a intercepção de luz, componentes do rendimento e características agronômicas nas cultivares Pioneer 309-B, híbrido precoce, e Agroceres 196, híbrido tardio.
Book Synopsis Holistica na mamoneira by : M. A. Diniz Neto
Download or read book Holistica na mamoneira written by M. A. Diniz Neto and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A mamoneira é uma oleaginosa que apresenta boa capacidade de produção sob pouca precipitação pluviornétrica, sendo esta uma característicade importância para seu cultivo no semi-árido brasileiro. Dois experimentos foram instalados nos Munioípios de Pentecoste e Limoeiro do Norte no Estado do Ceará. A área do experimento em Pentecoste pertence à Universidade Federal do Ceará (UFC) e a de Limoeiro do Norte ao Instituto Centro de Ensino Tecnológico (CENTEC). O objetivo do estudo foi de avaliar os componentes da planta relacionados ao crescimento e produção da cultura, com níveis crescentes de adubação NPK em duas épocas de plantio. O delineamento foi de blocos ao acaso com esquema fatorial 4x2x2 com quatro repetições. Os tratamentosforam representadospor quatro níveis de adubação NPK (sem adubação; 40-25-15; 80-50-30 e 120-75-45 kg ha-1de N, P2OS e de K2O). duas cultivares de mamona (cv. BRS Nordestina e cv. Mirante 10) e duas épocas de plantio: plantio antecipado com irrigação suplementar (época 1) e plantio de sequeiro (época 2). A antecipação do plantio aliada à adubação mineral promoveram a produção de racemos com menor comprimento nas duas localidades estudadas e menor nÚmero de frutos em Pentecoste, devido ao aumento da competiçãodos mesmos na planta, porém compensando os rendimentos da cultura pelo maior número de racemos produzidos. O plantio antecipado com irrigação suplementar teve marcante influência no rendimento de grãos apenas na localidade de Limoeirodo Norte, aumentandoem mais de 100%a produtividadede grãos em relação ao plantio de sequeiro. A precocidade no florescimentodas plantas da cv. Mirante 10 promoveu a participaçãode racemos de ordens mais elevadasno rendimento total de grãos no plantio de sequeiro em Pentecoste e nas duas épocas de plantio em relação à CV. BRS Nordestina em Limoeiro do Norte. Teores elevados de fósforo em folhas de plantas da cv. Mirante 10, promoveram redução na absorção dos nunientes potássio, cálcio e magnésio no plantio antecipado nas duas localidades avaliadas. Dos componentes de produção estudados, a produção de grãos por planta, o nÚmero de racemos por planta e o número de filJtos por racemo são, nesta ordem. os que apresentaram maior correlação positiva com o rendimento de grãos das cultivares BRS Nordestina e Mirante 10 nos dois locais estudados.
Download or read book Agrindex written by and published by . This book was released on 1978 with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Efeitos de epocas de plantio e populacao sobre o rendimento e outras caracteristicas agronomicas de quatro cultivares de soja, Glycine max (L.) Merrill by : E.F. Queiroz
Download or read book Efeitos de epocas de plantio e populacao sobre o rendimento e outras caracteristicas agronomicas de quatro cultivares de soja, Glycine max (L.) Merrill written by E.F. Queiroz and published by . This book was released on 1975 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Horticultura brasileira written by and published by . This book was released on 2004 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fitopatologia brasileira written by and published by . This book was released on 2000 with total page 1610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybean written by Hany El-Shemy and published by BoD – Books on Demand. This book was released on 2011-11-02 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Worldwide, soybean seed proteins represent a major source of amino acids for human and animal nutrition. Soybean seeds are an important and economical source of protein in the diet of many developed and developing countries. Soy is a complete protein and soyfoods are rich in vitamins and minerals.Soybean protein provides all the essential amino acids in the amounts needed for human health. Recent research suggests that soy may also lower risk of prostate, colon and breast cancers as well as osteoporosis and other bone health problems and alleviate hot flashes associated with menopause. This volume is expected to be useful for student, researchers and public who are interested in soybean.
Book Synopsis Plant Life in Anaerobic Environments by : Donal D. Hook
Download or read book Plant Life in Anaerobic Environments written by Donal D. Hook and published by CRC Press. This book was released on 1978 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Processes in anaerobiosis; Recent contribution on anaerobiosis.
Book Synopsis Agriculture and Industry in Brazil by : Albert Fishlow
Download or read book Agriculture and Industry in Brazil written by Albert Fishlow and published by Columbia University Press. This book was released on 2020-08-04 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agriculture and Industry in Brazil is a study of the economics of Brazilian agriculture and industry, with a special focus on the importance of innovation to productivity growth. Albert Fishlow and José Eustáquio Ribeiro Vieira Filho examine technological change in Brazil, highlighting the role of public policy in building institutions and creating an innovation-oriented environment. Fishlow and Vieira Filho tackle the theme of innovation from various angles. They contrast the relationship between state involvement and the private sector in key parts of the Brazilian economy and compare agricultural expansion with growth in the oil and aviation sectors. Fishlow and Vieira Filho argue that modern agriculture is a knowledge-intensive industry and its success in Brazil stems from public institution building. They demonstrate how research has played a key role in productivity growth, showing how prudent innovation policies can leverage knowledge not only within a particular company but also across whole sectors of the economy. The book discusses whether and how Brazil can serve as a model for other middle-income countries eager to achieve higher growth and a more egalitarian distribution of income. An important contribution to comparative, international, and development economics, Agriculture and Industry in Brazil shows how the public success in agriculture became a prototype for advance elsewhere.
Book Synopsis Soil Compaction in Crop Production by : B.D. Soane
Download or read book Soil Compaction in Crop Production written by B.D. Soane and published by Elsevier. This book was released on 2013-10-22 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a global review of the mechanisms, incidence and control measures related to the problems of soil compaction in agriculture, forestry and other cropping systems. Among the disciplines which relate to this subject are soil physics, soil mechanics, vehicle mechanics, agricultural engineering, plant physiology, agronomy, pedology, climatology and economics.The volume will be of great value to soil scientists, agricultural engineers, and all those involved with irrigation, drainage and tillage. It will help to facilitate the exchange of information on current work throughout the world, as well as to promote scientific understanding and stimulate the development, evaluation and adoption of practical solutions to these widespread and urgent problems.
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.
