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Registros recuperados: 66
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Adubação de aveia em dois sistemas de plantio. Repositório Alice
PRIMAVESI, A.C.; PRIMAVESI, O.; CANTARELLA, H.; GODOY, R.; VIVALDI, L.J..
O objetivo deste trabalho foi determinar as doses de N, P e K necessárias para a obtenção da máxima produção econômica de forragem de aveia, linhagem UPF 87111, nos sistemas de plantio convencional e com cobertura morta, num Latossolo Vermelho distrófico típico. Utilizou-se como esquema experimental um fatorial fracionado (1/2)43 com dois blocos ao acaso, total de 32 parcelas, sem repetição. Os tratamentos constituíram-se de quatro doses de N e de K2O (0, 70, 140 e 210 kg ha-1), como uréia e cloreto de potássio, respectivamente, e quatro doses de P2O5 (0, 60, 120, 180 kg ha-1), como superfosfato triplo. As doses de N, P e K para produção de forragem de aveia com máxima receita líquida, foram, em kg ha-1, 165 (N), 50 (P2O5), 53 (K2O), no plantio...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Avena sativa; Cultivo convencional; Matéria vegetal; Forragem; Rendimento; Conventional tillage; Mulches; Forage; Yields.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/handle/doc/108859
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Agronomic and Economic Efficiency of Common-Bean Inoculation with Rhizobia and Mineral Nitrogen Fertilization Rev. Bras. Ciênc. Solo
Soares,Bruno Lima; Ferreira,Paulo Ademar Avelar; Rufini,Márcia; Martins,Fábio Aurélio Dias; Oliveira,Dâmiany Pádua; Reis,Ricardo Pereira; Andrade,Messias José Bastos de; Moreira,Fatima Maria de Souza.
ABSTRACT Management of biological nitrogen fixation in common bean still requires improvement. The objective of this study was to verify the compatibility of nitrogen fertilization with biological N2 fixation to increase common bean yield and profitability. Four field experiments were performed in four municipalities of Minas Gerais, Brazil, during the 2009 and 2010 winter crop season. The 2009 crop experiments were set up under a no-till system and the 2010 crop was conducted using conventional tillage. A randomized block experimental design was used with four replications and seven treatments combining application rates of mineral N (at sowing and/or topdressing) and seed inoculation with Rhizobium tropici strain CIAT899. Inoculation with 20 kg ha-1...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phaseolus vulgaris; Nitrogen fixation; No-till; Conventional tillage.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100416
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Avaliação do intervalo hídrico ótimo e sua relação com a produtividade e a massa de raízes de feijoeiro em sistema de plantio direto e preparo convencional do solo. Infoteca-e
SÁ, M. A. C. de; SANTOS JÚNIOR, J. de D. G. dos; MIRANDA, L. N. de..
RESUMO: O objetivo deste trabalho foi determinar o intervalo hídrico ótimo utilizando-se um minipenetrômetro dinâmico em sistema de semeadura direta e preparo convencional do solo, cultivado com feijão em sistema irrigado. Amostras indeformadas foram coletadas em trincheiras de 0,80 m de largura por 0,50 m de profundidade, na porção central das camadas 0,00-0,10, 0,10-0,20, 0,20-0,30, 0,30-0,40 e 0,40-0,50 m. Em cada camada, foram coletadas sete amostras perpendicularmente à linha de plantio em intervalos regulares de 0,10 m, até os 0,30 m das entrelinhas adjacentes. Foram determinados o intervalo hídrico ótimo (IHO), a densidade do solo (Ds), a resistência à penetração (índice de cone - IC), a produtividade de grãos e a massa de raízes. Foram observados...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Solo; Plantio direto; Plantio convencional; Compactação do solo; Perfil do solo; Soil; Zero tillage; Conventional tillage; Soil compactation; Soil profiles.
Ano: 2007 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/571543
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Carbon stock and its compartments in a subtropical oxisol under long-term tillage and crop rotation systems Rev. Bras. Ciênc. Solo
Campos,Ben-Hur Costa de; Amado,Telmo Jorge Carneiro; Bayer,Cimélio; Nicoloso,Rodrigo da Silveira; Fiorin,Jackson Ernani.
Soil organic matter (SOM) plays a crucial role in soil quality and can act as an atmospheric C-CO2 sink under conservationist management systems. This study aimed to evaluate the long-term effects (19 years) of tillage (CT-conventional tillage and NT-no tillage) and crop rotations (R0-monoculture system, R1-winter crop rotation, and R2- intensive crop rotation) on total, particulate and mineral-associated organic carbon (C) stocks of an originally degraded Red Oxisol in Cruz Alta, RS, Southern Brazil. The climate is humid subtropical Cfa 2a (Köppen classification), the mean annual precipitation 1,774 mm and mean annual temperature 19.2 ºC. The plots were divided into four segments, of which each was sampled in the layers 0-0.05, 0.05-0.10, 0.10-0.20, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon sequestration; No-tillage; Conventional tillage; Soil management.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000300016
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Carbon Stocks in Compartments of Soil Organic Matter 31 Years after Substitution of Native Cerrado Vegetation by Agroecosystems Rev. Bras. Ciênc. Solo
Ferreira,Eloisa Aparecida Belleza; Bustamante,Mercedes Maria da Cunha; Resck,Dimas Vital Siqueira; Figueiredo,Cícero Célio de; Pinto,Alexandre de Siqueira; Malaquias,Juaci Vitória.
ABSTRACT Changes in carbon stocks in different compartments of soil organic matter of a clayey Latossolo Vermelho Distrófico (Typic Haplustox), caused by the substitution of native savanna vegetation (cerrado sensu stricto) by agroecosystems, were assessed after 31 years of cultivation. Under native vegetation, a stock of 164.5 Mg ha-1 C was estimated in the 0.00-1.00 m layer. After 31 years of cultivation, these changes in soil C stocks were detected to a depth of 0.60 m. In the case of substitution of cerrado sensu stricto by no-tillage soybean-corn rotation, a reduction of at least 11 % of the soil C pools was observed. However, the adoption of no-tillage as an alternative to tillage with a moldboard plow (conventional system) reduced CO2 emissions by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conventional tillage; No-tillage; Microbial biomass; Particulate organic matter.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100507
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Carbono total e atributos químicos com diferentes usos do solo no Cerrado - DOI: 10.4025/actasciagron.v31i4.792 Agronomy
Siqueira Neto, Marcos; USP; Piccolo, Marisa de Cássia; Centro de Energia Nuclear na Agricultura (CENA/USP); Scopel, Eric; EMBRAPA; Costa Junior, Ciniro; Centro de Energia Nuclear na Agricultura (CENA/USP); Cerri, Carlos Clemente; USP; Bernoux, Martial; Institut de Recherche pour le Development.
A região do Cerrado representa uma das maiores áreas cultivada do mundo. Os diferentes usos do solo empregados nesta região podem modificar efetivamente as quantidades de matéria orgânica e alterar a ciclagem dos nutrientes no solo. O objetivo deste estudo foi avaliar o efeito de diferentes sistemas de manejo nas relações entre o carbono total e os atributos químicos de um Latossolo Vermelho distrófico no Cerrado na região de Rio Verde, Estado de Goiás. As áreas estudadas foram cerradão, pastagem de baixa produtividade, plantio convencional de soja e plantio direto de soja com milho em sucessão. Os valores mais baixos no pH, cátions trocáveis, P-disponível e enxofre foram observados no Cerradão, contudo foram encontrados os maiores teores de C-total, que...
Palavras-chave: 5.02.01.07-7 Solos Florestais fertilidade do solo; Plantio direto; Plantio convencional; Pastagem; Soja Manejo e Conservação do Solo soil fertility; No-tillage; Conventional tillage; Pasture; Soybean.
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/792
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Changes in microbiological attributes of a Red Latosol under different cropping systems. Repositório Alice
NAVROSKI, D.; MOREIRA, A.; GUIMARAES, M. de F.; COLOZZI FILHO, A..
bitstream/item/191351/1/Navroski-Changes-open.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Plantio; Carbono; Micorriza; Microbiologia do Solo; No-tillage; Conventional tillage.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1104820
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Comparação das comunidades de Entomobryidae e Isotomidae (Collembola) entre plantio direto em três níveis de fertilidade, plantio convencional e um ecossistema natural (campo nativo) em Ponta Grossa, Paraná, Brasil Zoologia
Sautter,Klaus Dieter; Santos,Honório Roberto dos; Ribeiro Júnior,Paulo Justiniano.
This work had as objective to compare the communities of Entomobryidae and Isotomidae (Collembola) among no-tillage in three fertility levels, conventional tillage and a natural ecosystem (native grassland). In the no-tillage in low fertility and medium fertility Entomobryidae and Isotomidae had populational picks in the winter and in the summer. In the no-tillage in area of high fertility, there was a populational pick for both families in the summer. In relation to the conventional tillage, Entomobryidae had a populational pick in the winter, and Isotomidae in the winter and in the summer. In the natural ecosystem Entomobryidae presented populational picks in the winter and in the summer and Isotomidae had regular populational fluctuation along the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Collembola; Entomobryidae; Isotomidae; No-tillage; Conventional tillage.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000100006
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Comparação das comunidades de Sminthuroidea e Onychiuridae (Collembola) entre plantio direto em três níveis de fertilidade, plantio convencional e um ecossistema natural (campo nativo) em Ponta Grossa, Paraná, Brasil Zoologia
Sautter,Klaus Dieter; Santos,Honório Roberto dos; Ribeiro Júnior,Paulo Justiniano.
This work had as objective to compare the communities of Sminthuroidea and Onychiuridae (Collembola) among no-tillage in three fertility levels, conventional tillage and a natural ecosystem (native grassland). In the conventional tillage and in the no-tillage in area of medium fertility, the community of Sminthuroidea had regular fluctuation along the period of the experiment, but wtth low densities. The no-tillage in area of high fertility presented a populational pick in the autumn; the no-tillage in area of low fertility, in the spring; and, the natural ecosystem, in the summer. As the final mean density of the population of Sminthuroidea, was observed that the no-tillage in area of low fertility went numerically superior to the others, proceeded by the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Collembola; Onychiuridae; Sminthuroidea; No-tillage; Conventional tillage.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000100007
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Conservation Agriculture in Trouble? Estimating the Economic Impact of an Eventual Glyphosate Prohibition in Spain Planta Daninha
PARDO,G.; MARTÍNEZ,Y..
ABSTRACT: Weed control is a crucial aspect in many conservation agriculture systems given that costs and time savings from avoiding tillage are closely linked to the use of effective and environmental friendly herbicides. This has led to the widespread use of glyphosate in farms, as it is a broad-spectrum, easily degradable, low- cost herbicide. The recent debate on the safety of glyphosate and on the excessive use of chemical herbicides in food production has caused concern on farmers about the possible economic effects of a virtual ban on glyphosate. The aim of this paper is to estimate the costs associated with an eventual prohibition of glyphosate in Spanish conservation agriculture areas. The costs of different alternative weed control strategies for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation systems; Conventional tillage; Economic evaluation; Weed control.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100166
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Contribuição da micorriza arbuscular para a produtividade e sustentabilidade nos sistemas de produção com plantio direto e convencional no Cerrado. Infoteca-e
MIRANDA, J. C. C. de; MIRANDA, L. N. de..
ABSTRACT: The development of a sustainable agriculture requires the use of agricultural practices that involve a minimum soil tillage. The cropping systems change the dynamics of native arbuscular mycorrhizal fungi and these, on the other hand, determine the contribution of arbuscular mycorrhiza on crop responses to lime and fertilizers and on the efficiency of the cropping system itself. Density of those native fungi in the soil is similar in both till and no-till planting systems and decreases with soil depth, being higher at 0 cm-10 cm. Under no-till system, the external mycelium, developed during the former cropping, is preserved and possibly stimulating the rapid plant root colonization of the following crop. In the first years, grain yield showed to...
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Micorriza; Fungo; Solo; Cerrado; Plantio direto; Plantio convencional; Arbuscular mycorrhizal; Conventional tillage; Zero tillage.
Ano: 2007 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/557814
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Contribution of macroporosity to water flux of a soil under different tillage systems Rev. Bras. Ciênc. Solo
Soracco,Carlos Germán; Lozano,Luis Alberto; Balbuena,Roberto; Ressia,Juan Manuel; Filgueira,Roberto Raúl.
In view of the importance of the macroporosity for the water transport properties of soils, its quantitative assessment is a challenging task. Measurements of hydraulic conductivity (K) at different soil water tensions and the quantification of water-conducting macropores (θM) of a soil under different tillage systems could help understand the effects on the soil porous system and related hydraulic properties. The purpose of this study was to assess the effects of Conventional Tillage (CT), Chisel Plow (CP) and No Tillage (NT) on θM and on K; and to quantify the contribution of macroporosity to total water flux in a loam soil. A tension disc infiltrometer was used at two soil water pressure heads (-5 cm, and 0) to infer θM and K, during fallow....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tension disc infiltrometer; No tillage; Chisel plow; Conventional tillage; Effective porosity.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400009
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Controle de plantas daninhas com herbicidas aplicados via herbigacao, na cultura do feijao, em plantios direto e convencional. Infoteca-e
FONTES, J. R. A.; SILVA, A. A. da; VIEIRA, R. F.; RAMOS, M. M..
2002
Tipo: Documentos (INFOTECA-E) Palavras-chave: Controle quimico; Planta daninha; Feijao; Phaseolus vulgaris; Herbicida; Metolachlor; Fomesafen; Solo; Plantio direto; Chemical control; Weeds; Beans; Herbicides; Soil; Weed control; Zero tillage; Conventional tillage; Herbigation.
Ano: 2002 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/546461
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Conventional Tillage versus No-till: Characteristics of Producers and Farms AgEcon
Djido, Abdoulaye Ibrahim; Vitale, Jeffrey D.; Epplin, Francis M..
A survey of Oklahoma farmers was conducted to determine characteristics of farms across three tillage categories: conventional tillage exclusively; no-till exclusively; other (combination of systems). The seven percent that use no-till exclusively crop more acres, rent more acres, and use more crop rotations than farms that use conventional tillage exclusively.
Tipo: Conference Paper or Presentation Palavras-chave: No-till; Conventional tillage; Survey; Farm machinery; Farm size; Wheat; Perceptions; Crop Production/Industries; Farm Management; Q10; Q12.
Ano: 2009 URL: http://purl.umn.edu/46717
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Conversion of Cerrado into agricultural land in the south-western amazon: carbon stocks and soil fertility. Repositório Alice
CARVALHO, J. L. N.; CERRI, C. E. P.; FEIGL, B. J.; PICCOLO, M. de C.; GODINHO, V. de P.; HERPIN, U.; CERRI, C. C..
Mudanças de uso da terra e práticas de manejo modificam a dinâmica do C e a fertilidade do solo. Este estudo avaliou as implicações dos sistemas de cultivo (NT e CT) nos estoques de C e de nutrientes e identificou inter-relações entre estes estoques e outros atributos da fertilidade do solo em Latossolo após a mudança do uso da terra no cerrado amazônico. Os estoques de C e de nutrientes (P, K, Ca e Mg) ajustados pela massa equivalente do solo sob cerrado (CE), foram maiores principalmente sob NT. Após a adoção do NT, exceto em 2NT, os estoques de C foram maiores em relação às demais áreas avaliadas. Correlações entre estoques de C e de nutrientes revelaram algumas correlações positivas com Ca e Mg nas áreas sob NT, devido ao uso continuo de calcário, à...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Latossolo; Plantio direto; Plantio convencional; Estoque de nutrientes; Oxisol; No-tillage; Conventional tillage; Nutrient stock.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/709880
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Conversion of cerrado into agricultural land in the south-western Amazon: carbon stocks and soil fertility Scientia Agricola
Carvalho,João Luís Nunes; Carlos Eduardo Pelegrino,Cerri; Feigl,Brigitte Josefine; Píccolo,Marisa de Cássia; Godinho,Vicente de Paula; Herpin,Uwe; Cerri,Carlos Clemente.
Land use change and land management practices can modify soil carbon (C) dynamics and soil fertility. This study evaluated the effect of tillage systems (no-tillage - NT and conventional tillage - CT) on soil C and nutrient stocks in an Oxisol from an Amazonian cerrado following land use change. The study also identified relationships between these stocks and other soil attributes. Carbon, P, K, Ca and Mg stocks, adjusted to the equivalent soil mass in the cerrado (CE), were higher under NT. After adoption of all but one of the NT treatments, C stocks were higher than they were in the other areas we considered. Correlations between C and nutrient stocks showed positive correlations with Ca and Mg under NT due to continuous liming, higher crop residue...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oxisol; No-tillage; Conventional tillage; Nutrient stock.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000200013
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Corn productivity in function of surface application of lime in differents management systems and cultural preparation REA
Narimatsu,Karem C. P.; Mello,Luiz M. M. de; Domingues,Luis A. da Silva; Chioderoli,Carlos A.; Lima,Ronaldo C..
The evaluation of technologies employed at the agricultural production system such as crop rotation and soil preparation, both associated with crop-livestock integration, is crucial. Therefore, the aim of the present study was to evaluate the incorporation of lime for three no-tillage systems and cultural managements in system of crop-livestock integration, with emphasis on corn grain yield. The experiment was conducted from January 2003 to April 2005 at Selvíria city, MS, in Dystroferric Red Latosol, clay texture. The experimental design was randomized blocks with split plots consisted of three main treatments, aimed the soil physics conditioning and the incorporation of lime: PD - No-no-tillage; CM - minimum no-tillage, and PC - conventional no-tillage;...
Tipo: Info:eu-repo/semantics/article Palavras-chave: No tillage system; Minimum tillage; Conventional tillage; Crop-livestock integration; Crop rotation.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000200007
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Efeito da sucessão soja/trigo no balanço de N em sistema de plantio direto e convencional. Infoteca-e
ZOTARELLI, L.; TORRES, E.; URQUIAGA, S.; BODDEY, R. M.; ALVES, B. J. R..
1999
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Soja; Trigo; Balanço de nutriente; Plantio direto; Plantio convencional; Soybeans; Wheats; Nutrient balance; Nutrition physiology; Direct sowing; Zero tillage; Conventional tillage.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/623783
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Effects of different management systems on porosity of oxisols in Paraná, Brazil Rev. Bras. Ciênc. Solo
Tavares Filho,João; Tessier,Daniel.
Soils play a fundamental role in the production of human foods. The Oxisols in the state of Paraná are among the richest and most productive soils in Brazil, but degradation and low porosity are frequently documented, due to intensive farming involving various management strategies and the application of high-tech solutions. This study aims to investigate changes in the porosity of two Red Oxisols (Latossolos Vermelhos), denoted LVef (eutroferric) and LVdf (dystroferric) under conventional and no-tillage soil management, with a succession of annual crops of soybean, maize and wheat over a continuous period of more than 20 years. After describing the soil profiles under native forest, no-tillage management and conventional tillage using the crop profile...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil structure; Crop profile method; No-tillage; Conventional tillage.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300031
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Effects of No-Tillage Production Practices on Crop Yields as Influenced by Crop and Growing Environment Factors AgEcon
Toliver, Dustin K.; Larson, James A.; English, Burton C.; Roberts, Roland K.; Torre Ugarte, Daniel de la; West, Tristram O..
This paper evaluated differences between yields of no-tillage compared to conventional or reduced tillage and their associated downside risk. Six crops were evaluated along with how those yields and risks differed by various environmental factors such geographic location, precipitation, soil type and how long the practice had been used.
Tipo: Thesis or Dissertation Palavras-chave: No-tillage; Conservation; Conventional tillage; Downside-risk; Yield; Agribusiness; Environmental Economics and Policy; Farm Management; Land Economics/Use; Production Economics; Risk and Uncertainty.
Ano: 2011 URL: http://purl.umn.edu/98818
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