SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

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...

Agronomic and Economic Efficiency of Common-Bean Inoculation with Rhizobia and Mineral Nitrogen Fertilization

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

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...

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.

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

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: Plantio convencional; Zero tillage; Soil compactation.; Compactação do Solo; Perfil do Solo; Plantio Direto; Solo.; Conventional tillage; Soil; Soil profiles..

Ano: 2007

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/571543

Carbon stock and its compartments in a subtropical oxisol under long-term tillage and crop rotation systems

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...

Carbon Stocks in Compartments of Soil Organic Matter 31 Years after Substitution of Native Cerrado Vegetation by Agroecosystems

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

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...

Carbono total e atributos químicos com diferentes usos do solo no Cerrado - DOI: 10.4025/actasciagron.v31i4.792

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

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

Changes in microbiological attributes of a Red Latosol under different cropping systems.

NAVROSKI, D.; MOREIRA, A.; GUIMARAES, M. de F.; COLOZZI FILHO, A..

bitstream/item/191351/1/Navroski-Changes-open.pdf

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

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

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...

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

Palavras-chave: Collembola; Entomobryidae; Isotomidae; No-tillage; Conventional tillage.

Ano: 1999

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000100006

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...

Conservation Agriculture in Trouble? Estimating the Economic Impact of an Eventual Glyphosate Prohibition in Spain

Palavras-chave: Collembola; Onychiuridae; Sminthuroidea; No-tillage; Conventional tillage.

Ano: 1999

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000100007

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...

Contribution of macroporosity to water flux of a soil under different tillage systems

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

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....

Controle de plantas daninhas com herbicidas aplicados via herbigacao, na cultura do feijao, em plantios direto e convencional.

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

Infoteca-e

FONTES, J. R. A.; SILVA, A. A. da; VIEIRA, R. F.; RAMOS, M. M..

bitstream/CPAC-2009/24717/1/doc_55.pdf

Tipo: Documentos (INFOTECA-E)

Palavras-chave: Planta daninha; Zero tillage; Herbigation.; Controle Químico; Feijão; Herbicida; Phaseolus Vulgaris; Plantio Direto; Solo.; Herbicides; Beans; Chemical control; Conventional tillage; Fomesafen; Metolachlor; Soil; Weed control; Weeds..

Ano: 2002

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/546461

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

Conversion of Cerrado into agricultural land in the south-western amazon: carbon stocks and soil fertility.

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...

Conversion of cerrado into agricultural land in the south-western Amazon: carbon stocks and soil fertility

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

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...

Corn productivity in function of surface application of lime in differents management systems and cultural preparation

Palavras-chave: Oxisol; No-tillage; Conventional tillage; Nutrient stock.

Ano: 2009

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000200013

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;...

Efeito da sucessão soja/trigo no balanço de N em sistema de plantio direto e convencional.

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

Infoteca-e

ZOTARELLI, L.; TORRES, E.; URQUIAGA, S.; BODDEY, R. M.; ALVES, B. J. R..

bitstream/CNPAB-2010/27158/1/cot029.pdf

Tipo: Comunicado Técnico (INFOTECA-E)

Palavras-chave: Balanço de nutriente; Plantio convencional; Wheats; Direct sowing; Zero tillage.; Plantio Direto; Trigo.; Soja; Conventional tillage; Nutrient balance; Nutrition physiology; Soybeans..

Ano: 1999

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/623783

Effects of different management systems on porosity of oxisols in Paraná, Brazil

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...

Effects of No-Tillage Production Practices on Crop Yields as Influenced by Crop and Growing Environment Factors

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

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

Efficacy of the association of cover crops with maize and direct sowing short-term effect on crops? yields in maize-cotton cropping system in Western Burkina Faso.

KOULIBALY, B.; OUATTARA, A.; DAKUO, D.; OUATTARA, K.; TRAORÉ, O.; DI STEFANO, J. G.; LOMPO, F..

To improve the productivity and sustainability of cotton and cereals based system, direct sow ing under mulch was tested for its efficacy on cotton and maize yields on the research station of Farako - Bâ, in Western Burkina Faso. The experimental design was a complete randomized blocks of Fisher with four replications. Conventional tillage by annual moldboard plowing (T7) was compared with direct sowing under mulch -based cropping system (DMC) using maize association with cover crop s defined as: maize without cover crop (T1), maize +Brachiaria ruziziensis(T2), maize + B. ruziziensis+ Mucuna cochinchinensis (T3), maize + B. ruziziensis+ Panicum maximum (T4), maize + B. ruziziensis + Stylosantes hamata (T5), and maize + Crotalaria juncea (T6). Cover crops...