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Influencia Da Adubacao Fosfatada Potassica Sobre A Ocorrencia De Pragas E Inimigos Naturais Na Cultura Da Soja
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Book Synopsis Influência da adubação fosfatada-potássica sobre a ocorrência de pragas e inimigos naturais na cultura da soja by : Alexandre Moraes Cardoso
Download or read book Influência da adubação fosfatada-potássica sobre a ocorrência de pragas e inimigos naturais na cultura da soja written by Alexandre Moraes Cardoso and published by . This book was released on 1999 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Efeitos da adubação fosfatada, potássica e calagem na cultura da soja (Glycine max (L.) Merril). by : R. de O. PAIVA
Download or read book Efeitos da adubação fosfatada, potássica e calagem na cultura da soja (Glycine max (L.) Merril). written by R. de O. PAIVA and published by . This book was released on 1974 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Eficiência da adubação fosfatada e potássica na cultura da soja by : T. C. de ASSIS
Download or read book Eficiência da adubação fosfatada e potássica na cultura da soja written by T. C. de ASSIS and published by . This book was released on 2004 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: A expansão da cultura da soja nas regiões de baixa latitude do Brasil estimulam estudos para estabelecer tecnologias e manejo adequado para seu cultivo. As recomendações de adubação devem ser relacionadas com a resposta da variedade utilizada à adubação, visando à meta do máximo retorno por área, de tal maneira a atingir o máximo retorno econômico. No Estado do Pará, a área plantada com a cultura vem crescendo, principalmente nas regiões sul, sudeste, nordeste e oeste paraense. As pesquisas com fertilidade do solo e nutrição mineral da soja são incipientes e as recomendações técnicas são adaptadas de informações obtidas em outras regiões. Desse modo o presente trabalho teve como objetivo estabelecer curvas de respostas do fósforo e potássio para a cultlura da soja. Os experimentos foram conduzidos no campo experimental da Embrapa Amazônia Oriental, nos municípios de Paragominas e Belterra, PA. Foi usada a cultivar Sambaíba como planta indicadora com espaçamento de 50 cm entre fileiras, com a densidade de 20 sementes/metro linear, num delineamento de blocos ao acaso com os tratamentos dispostos num esquema fatorial 4 x 4, com quatro repetições, correspondendo a doses de fósforo (0,80, 160,240 kg ha-1 de P2O5), na forma de superfosfato simples e quatro doses de potássio (0, 60, 120, 180 kg ha-1 de K2O), na forma de cloreto de potássio. A necessidade de calagem foi baseada na elevação da saturação por bases. A cal agem foi realizada para elevação da saturação por bases a 60%, sendo realizada 60 dias de antecedência do plantio. A adubação fosfàtada foi realizada de uma única vez no sulco de V plantio. A adubação potássica foi parcelada em duas vezes, 1/3 no plantio, 2/3 em cobertuta na época do florescimento, de acordo com os tratamentos. Foram avaliadas a produtividade, altura das plantas, peso de 100 sementes, inserção da 1 a vagem, grau de acamamento, número de dias de florescimento, umidade de grãos na época da colheita e anotações de aparecimento de pragas e doenças, além das análises química de solo e planta. A aplicação anual de 80 kg ha-1 de P2O5 e 60 kg ha-1 de K2O foi suficiente para atender à demanda da cultura da soja e manter os teores de fósforo e potássio no solo próximo do nível crítico. O aumento dos teores de potássio no solo resultam em queda na concentração de cálcio e magnésio na matéria seca da soja. O conteúdo de fósforo e potássio nas tolhas de soja cultivada em Belterra foi maior do que em Paragominas. Os nutri entes absorvidos em maiores quantidades pela soja foram o N e o K, seguindo-se, pela ordem decrescente: Ca, Mg, P e S. Em Latossolo Amarelo textura argilosa, com baixo teor de fósforo e potássio a soja cv. Sambaíba produziu 3.600 kg ha-1 de grãos, acima da média nacional, com aplicações de 80 kg ha-1 de P2O5 e 60 kg ha-1 de K2O.
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 The Palms of the Amazon by : Andrew Henderson
Download or read book The Palms of the Amazon written by Andrew Henderson and published by . This book was released on 1995 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: The palms are among the most abundant, diverse, and important families of plants found in the Amazon. Based on extensive field work, this book provides a systematic treatment of all palms that occur naturally in the Amazon region. Each species is exhaustively described with reviews of their distribution, habitat, and ecology. Introductory chapters describe the physical setting of the Amazon region as well as on the biogeography and ecology of the palm family. This first modern treatment of the 135 species of Amazon palms provides a definitive account of their ecology, uses, and biogeography. It will be welcomed by students, teachers, and researchers of botany, ecology, agronomy, and conservation biology.
Download or read book Alley Farming written by B. T. Kang and published by IITA. This book was released on 1999 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tropical Agriculturalist is a series of practical field guides and textbooks for: producers, farmers and farm managers, agricultural extension officers agricultural diploma, degree and vocational students, teachers and lecturers, senior secondary students, as reference books, adult education, rural and community development programmes.
Book Synopsis International Workshop on Conservation Farming for Sloping Uplands in Southeast Asia: Challenges, Opportunities, and Prospects by :
Download or read book International Workshop on Conservation Farming for Sloping Uplands in Southeast Asia: Challenges, Opportunities, and Prospects written by and published by . This book was released on 1995 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Genus Inga by : T. D. Pennington
Download or read book The Genus Inga written by T. D. Pennington and published by Royal Botanic Gardens Kew. This book was released on 1998 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: The genus Inga is a large group of forest trees restricted to South America. This monograph describes and maps 258 species. Of these 253 are illustrated, and information is presented on distribution, ecology, field characteristics and species relationships. Additional chapters cover morphology, wood and bark anatomy, cytology, nonprotein amino acid chemistry, flavonoid chemistry, variation, relationships and distribution, and uses.
Book Synopsis Slash-and-Burn Agriculture by : Cheryl Palm
Download or read book Slash-and-Burn Agriculture written by Cheryl Palm and published by Columbia University Press. This book was released on 2005-08-17 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Caused in part by the slash-and-burn practices of both large- and small-scale farmers, the environmental implications of tropical deforestation remain a worldwide concern. Yet the small-scale farmers who use slash-and-burn agriculture depend on it to produce food and make a living for their families. With contributions from scientists, economists, ecologists, and anthropologists, this book provides an overall analysis of the environmental, economic, and social reasons for why slash and burn is so common and presents alternatives to this destructive practice.
Book Synopsis Cultivating Diversity by : Lori Ann Thrupp
Download or read book Cultivating Diversity written by Lori Ann Thrupp and published by . This book was released on 1998 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biodiversity is a fundamental basis for agricultural production and food security, as well as a valuable ingredient of environmental conservations. This report reveals the urgent need for action to incorporate biodiversity planning into agricultural development, and its highlights effective practices and policies.
Book Synopsis Land Degradation in the Tropics by : Michael John Eden
Download or read book Land Degradation in the Tropics written by Michael John Eden and published by Burns & Oates. This book was released on 1996 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: