Influencia Da Populacao De Plantas E De Niveis De Nitrogenio Na Producao E Qualidade Da Massa Verde E Da Silagem De Milho Zea Mays L

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Influencia da populacao de plantas e de niveis de nitrogenio na producao e qualidade da massa verde e da silagens de milho (Zea mays L.).

Author : P. A. Ximenes
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Influencia da populacao de plantas e de niveis de nitrogenio na producao e qualidade da massa verde e da silagens de milho (Zea mays L.). by : P. A. Ximenes

Download or read book Influencia da populacao de plantas e de niveis de nitrogenio na producao e qualidade da massa verde e da silagens de milho (Zea mays L.). written by P. A. Ximenes and published by . This book was released on 1991 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nos anos agricolas de 1988/89 e 1989/90, conduziram-se tres ensaios nos municipios mineiros de Coimbra e Capinopolis, visando avaliar os efeitos de diferentes densidades de plantios de milho e de niveis de nitrogenio na producao e qualidade da massa verde e silagem. Avaliaram-se quatro niveis de nitrogenio (0, 80, 160 e 240 kg/ha) e quatro populacoes de plantas (40, 60, 80 e 100 mil plantas/ha), em um delineamento de blocos ao acaso, num esquema fatorial 4/2, com quatro repeticoes. Nos tres experimentos foram realizados observacoes no campo e em laboratorio, procurando levantar aspectos quantitativos e qualitativos da massa verde e da silagem. De acordo com os resultados encontrados, concluiu-se que o nitrogenio proporciona maior influencia na qualidade e quantidade de massa verde e de silagem do que a populacao de plantas, conforme se pode observar a seguir: - Os niveis de nitrogenio para a maxima producao de massa verde e de materia seca por unidade de area foram bem superiores aos recomendados atualmente para a proporcao de silagem. - A adubacao nitrogenada contribuiu para aumentos acentuados de massa verde, de materia seca e de proteina bruta por unidade de area. - Em condicoes normais, o acamamento de plantas por ocasiao da colheita foi muito reduzido, mesmo na populacoes mais altas associadas aos maiores niveis de nitrogenio. - A sobrevivencia de plantas nao foi alterada pelas populacoes de plantas e niveis de nitrogenio. - Os acrescimos na populacao de plantas e nos niveis de nitrogenio promoveram aumentos na altura de planta e de espiga. - A percentagem de materia seca e de proteina bruta na massa verde e na silagem aumentou com os niveis de nitrogenio e decresceu com os aumentos na populacao da plantas. - Os acrescimos na populacao de plantas reduziram o peso medio e o indice de espiga, enquanto os niveis de nitrogenio tendem a aumenta-los. - Os acrescimos na populacao de plantas proporcionaram maior producao de massa verde por unidade de area, entretanto isso nem sempre resultou em aumento correspondente de materia seca. - As populacoes de 80 e 100 mil plantas/ha produziram mais massa verde, mesmo quando ocorreu estresse hidrico. - Os valores referentes a percentagem de materia seca, percentagem de proteina bruta e digestibilidade "in vitro", da massa verde, foram semelhantes aos obtidos na silagem correspondente. - Os teores de carboidratos soluveis, acido lactico e pH sofreram pequena influencia do nitrogenio e da populacao de planta. - A digestibilidade "in vitro" da materia seca da massa verde e da silagem decresceu com os acrescimos na populacao de plantas.

Influência da população de plantas e de níveis de nitrogênio na produção e qualidade da massa verde e da silagem de milho (Zea mays L.)

Author : Paulo Alcanfor Ximenes
Publisher :
ISBN 13 :
Total Pages : 145 pages
Book Rating : 4.:/5 (467 download)

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Book Synopsis Influência da população de plantas e de níveis de nitrogênio na produção e qualidade da massa verde e da silagem de milho (Zea mays L.) by : Paulo Alcanfor Ximenes

Download or read book Influência da população de plantas e de níveis de nitrogênio na produção e qualidade da massa verde e da silagem de milho (Zea mays L.) written by Paulo Alcanfor Ximenes and published by . This book was released on 1991 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Revista Ceres

Author :
Publisher :
ISBN 13 :
Total Pages : 1082 pages
Book Rating : 4.A/5 ( download)

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Book Synopsis Revista Ceres by :

Download or read book Revista Ceres written by and published by . This book was released on 2005 with total page 1082 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Influência de níveis de nitrogênio, espaçamento e densidade no rendimento forrageiro e qualidade da silagem de milho (Zea mays L.)

Author : Lazaro Euripedes Paiva
Publisher :
ISBN 13 :
Total Pages : 81 pages
Book Rating : 4.:/5 (467 download)

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Book Synopsis Influência de níveis de nitrogênio, espaçamento e densidade no rendimento forrageiro e qualidade da silagem de milho (Zea mays L.) by : Lazaro Euripedes Paiva

Download or read book Influência de níveis de nitrogênio, espaçamento e densidade no rendimento forrageiro e qualidade da silagem de milho (Zea mays L.) written by Lazaro Euripedes Paiva and published by . This book was released on 1992 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Efeitos de niveis de nitrogenio e laminas de irrigacao no rendimento do milho verde (Zea mays, L.).

Author : M.A.R. Monteiro
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Efeitos de niveis de nitrogenio e laminas de irrigacao no rendimento do milho verde (Zea mays, L.). by : M.A.R. Monteiro

Download or read book Efeitos de niveis de nitrogenio e laminas de irrigacao no rendimento do milho verde (Zea mays, L.). written by M.A.R. Monteiro and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Com o objetivo de estudar o efeito de niveis de N e laminas de irrigacao no rendimento do milho verde (Zea mays, L.) cultivar BR 126 foi conduzido um experimento numa varzea pertencente ao Centro Nacional de Pesquisa de Milho e Sorgo da EMBRAPA, Sete Lagoas - MG, com quatro tratamentos de irrigacao (laminas equivalentes a 25,50, 75 e 100% da ETR) e seis subtratamentos de N (0; 40; 80; 120; 160; e 200 kg/ha). O delineamento experimental foi o de blocos casualizados com parcelas subdivididas tendo quatro repeticoes. O N foi incorporado na forma de ureia, sendo 1/3 no plantio junto com o fosforo e o potassio (30 kg/ha) e o restante em cobertura aos 49 dias apos o plantio, enquanto que o sistema de irrigacao utilizado foi o de infiltracao com sulcos fechados, iniciando-se os tratamentos aos 60 dias apos o plantio, sendo que, ate entao todos os tratamentos receberam laminas de irrigacao equivalentes a ETR menos as precipitacoes pluviometricas, atraves do sistema de irrigacao por aspersao. Foram analisados os seguintes parametros: altura da planta e da espiga, peso e numero das espigas comerciais, percentagem de empalhamento, qualidade, comprimento e indice de espigas e diametro medio da espiga e do grao. Os resultados obtidos permitiram concluir que: as alturas das plantas e das espigas nao foram afetadas pelas laminas de irrigacao, enquanto para a producao e seus componentes as laminas de irrigacao superiores a 25% da ETR, geralmente, nao diferiram entre si e mostraram aumentos na maioria dos parametros em ...

Efeitos de cultivares, espaçamentos e níveis de potássio no rendimento de massa e qualidade da silagem de milho (Zea mays L.)

Author : Wilson Ribeiro Diniz
Publisher :
ISBN 13 :
Total Pages : 50 pages
Book Rating : 4.:/5 (467 download)

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Book Synopsis Efeitos de cultivares, espaçamentos e níveis de potássio no rendimento de massa e qualidade da silagem de milho (Zea mays L.) by : Wilson Ribeiro Diniz

Download or read book Efeitos de cultivares, espaçamentos e níveis de potássio no rendimento de massa e qualidade da silagem de milho (Zea mays L.) written by Wilson Ribeiro Diniz and published by . This book was released on 1996 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Efeito dos niveis de nitrogenio e densidade de plantas sobre o rendimento da cultura do milho (Zea mays L.) em dois solos do Estado de Goias

Author : M.R. Nunes
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Efeito dos niveis de nitrogenio e densidade de plantas sobre o rendimento da cultura do milho (Zea mays L.) em dois solos do Estado de Goias by : M.R. Nunes

Download or read book Efeito dos niveis de nitrogenio e densidade de plantas sobre o rendimento da cultura do milho (Zea mays L.) em dois solos do Estado de Goias written by M.R. Nunes and published by . This book was released on 1981 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: O estudo da influencia de diferentes densidades de plantas e niveis denitrogenio sobre o rendimento de milho em graos, nas localidades de Santa Helena de Goias (latossolo) e Goiania (latossolo vermelho-escuro da Estacao Experimental da EMGOPA), contitui-se o principal objetivo deste trabalho. Procurou-se tambem analisar, economicamente, os dados obtidos nos tres anos de experimentacao, utilizando-se modelos quadraticoa para os calculos da MET e MEE.

Efeitos da fertilidade do solo sobre a producao e a qualidade das sementes de milho (Zea mays L.).

Author : S.M. Cicero
Publisher :
ISBN 13 :
Total Pages : 85 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Efeitos da fertilidade do solo sobre a producao e a qualidade das sementes de milho (Zea mays L.). by : S.M. Cicero

Download or read book Efeitos da fertilidade do solo sobre a producao e a qualidade das sementes de milho (Zea mays L.). written by S.M. Cicero and published by . This book was released on 1979 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: O objetivo principal do presente trabalho foi estudar os efeitos de dois niveis de fertilidade do solo sobre a producao, a germinacao, o vigor, o peso de mil sementes e a composicao quimica de sementes de cultivares de milho. O experimento de campo foi realizado em solo que apresentava dois niveis distintos de fertilidade. Naquele de maior fertilidde, fez-se, segundo as exigencias da cultura do milho e baseado nas propriedades quimicas do solo, adubacao contendo nitrogenio, fosforo, potassio, boro, cobre, mobidenio e zinco. Para o nivel mais baixo de fertilidade nao se fez qualquer tipo de adubacao. O delineamento experimental utilizado foi o de blocos casualizados, com duas repeticoes para cada nivel de fertilidade do solo. Do ensaio de campo, estudou-se tambem os efeitos sobre o numero de plantas quebradas e/ou acamadas, o numero de espigas sadias e o numero de espigas danificadas por pragas e/ou molestias. Com as sementes colhidas do ensaio de campo, conduziu-se os testes de laboratorio que foram realizados em duas epocas. Para os dados dos testes de germinacao, primeira contagem de germinacao, peso de mil sementes, proteina soluvel, acucares redutores, materia graxa e materia seca, utilizou-se o delineamento de parcelas subdivididas, com as parcelas distribuidas em blocos casualizados e tendo como sub-parcelas as duas epocas de realizacao dos testes. Por outro lado, para os testes de frio e envelhecimento rapido, utilizou-se o delineamento de parcelas sub-divididas, com as parcelas distribuidas em (...).

The Biogas Handbook

Author : Arthur Wellinger
Publisher : Elsevier
ISBN 13 : 085709498X
Total Pages : 507 pages
Book Rating : 4.8/5 (57 download)

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Book Synopsis The Biogas Handbook by : Arthur Wellinger

Download or read book The Biogas Handbook written by Arthur Wellinger and published by Elsevier. This book was released on 2013-02-19 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: With increasing pressures to utilize wastes effectively and sustainably, biogas production represents one of the most important routes towards reaching renewable energy targets. This comprehensive reference on the development and deployment of biogas supply chains and technology reviews the role of biogas in the energy mix and outlines the range of biomass and waste resources for biogas production. Contributors provide detailed coverage of anaerobic digestion for the production of biogas and review the utilization of biogas for various applications. They consider all aspects in the biogas production chain from the origin of the biomass feedstocks, feedstock selection and preparation, the anaerobic digestion process, biogas plant equipment design and operation, through to utilization of the biogas for energy production and the residue, the digestate, which can be used as a biofertilizer. The book also addresses biogas utilization, and explores environmental impacts and commercial market applications. Table of Contents: Biogas as an energy option: An overview Part 1 Biomass resources, feedstock treatment and biogas production: Biomass resources for biogas production; Analysis and characterisation of biogas feedstocks; Storage and pre-treatment of substrates for biogas production; Fundamental science and engineering of the anaerobic digestion process for biogas production; Optimisation of biogas yields from anaerobic digestion by feedstock type; Anaerobic digestion as a key technology for biomass valorisation: Roles and contribution to the energy balance of biofuel chains Part 2 Plant design, engineering, process optimisation and digestate utilization: Design and engineering of biogas plants; Energy flows in biogas plants: Analysis and implications for plant design; Process control in biogas plants; Methane emissions in biogas production; Biogas digestate quality and utilization; Land application of digestate Part 3 Biogas utilisation: international experience and best practice: Biogas cleaning; Biogas up-grading to biomethane; Biomethane injection into natural gas networks; Generation of heat and power from biogas for stationery applications: Boilers, gas engines and turbines, combined heat and power (CHP) plants and fuel cells; Biomethane for transport applications; Market development and certification schemes for biomethane

Anaerobic Reactors

Author : Carlos Augustos de Lemos Chernicharo
Publisher : IWA Publishing
ISBN 13 : 1843391643
Total Pages : 189 pages
Book Rating : 4.8/5 (433 download)

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Book Synopsis Anaerobic Reactors by : Carlos Augustos de Lemos Chernicharo

Download or read book Anaerobic Reactors written by Carlos Augustos de Lemos Chernicharo and published by IWA Publishing. This book was released on 2007-03-30 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic Reactors is the forth volume in the series Biological Wastewater Treatment. The fundamentals of anaerobic treatment are presented in detail, including its applicability, microbiology, biochemistry and main reactor configurations. Two reactor types are analysed in more detail, namely anaerobic filters and especially UASB (upflow anaerobic sludge blanket) reactors. Particular attention is also devoted to the post-treatment of the effluents from the anaerobic reactors. The book presents in a clear and informative way the main concepts, working principles, expected removal efficiencies, design criteria, design examples, construction aspects and operational guidelines for anaerobic reactors. About the series: The series is based on a highly acclaimed set of best selling textbooks. This international version is comprised by six textbooks giving a state-of-the-art presentation of the science and technology of biological wastewater treatment. Other titles in the series are: Volume 1: Waste Stabilisation Ponds; Volume 2: Basic Principles of Wastewater Treatment; Volume 3: Waste Stabilization Ponds; Volume 5: Activated Sludge and Aerobic Biofilm Reactors; Volume 6: Sludge Treatment and Disposal

Australian Journal of Agricultural Research

Author :
Publisher :
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:

Southern Forages

Author : Donald M. Ball
Publisher :
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:

Cactus (Opuntia Spp.) as Forage

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)

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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.

Manual Nitrogen Control

Author :
Publisher :
ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Manual Nitrogen Control by :

Download or read book Manual Nitrogen Control written by and published by . This book was released on 1993 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Soil Management for Sustainability

Author : R. Lal
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.3/5 (91 download)

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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

Southern Forages

Author : Donald M. Ball
Publisher :
ISBN 13 : 9780962959868
Total Pages : 322 pages
Book Rating : 4.9/5 (598 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 2007-01 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book Southern Forages has since gained wide recognition as a practical and reliable source of information on modern forage crop management. It is used by livestock producers, by seed, equipment and fertilizer dealers, by extension and conservation workers, and by teachers as a text for students learning about forages.

Yield gap analysis of field crops

Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
ISBN 13 : 9251088136
Total Pages : 82 pages
Book Rating : 4.2/5 (51 download)

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Book Synopsis Yield gap analysis of field crops by : Food and Agriculture Organization of the United Nations

Download or read book Yield gap analysis of field crops written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-06-29 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: To feed a world population that will exceed 9 billion by 2050 requires an estimated 60% increase over current primary agricultural productivity. Closing the common and often large gap between actual and attainable crop yield is critical to achieve this goal. To close yield gaps in both small and large scale cropping systems worldwide we need (1) definitions and techniques to measure and model yield at different levels (actual, attainable, potential) and different scales in space (field, farm, region, global) and time (short and long term); (2) identification of the causes of gaps between yield levels; (3) management options to reduce the gaps where feasible and (4) policies to favour adoption of sustainable gap-closing solutions. The aim of this publication is to critically review the methods for yield gap analysis, hence addressing primarily the first of these four requirements, reporting a wide-ranging and well-referenced analysis of literature on current methods to assess productivity of crops and cropping systems.