Consulta: subjectFacets:"No-tillage"
Registros recuperados: 139
Data/hora: 02/06/2024 09:06:44

SOIL PHYSICAL ATTRIBUTES AND PRODUCTION COMPONENTS OF SUGARCANE CULTIVARS IN CONSERVATIONIST TILLAGE SYSTEMS
Provedor de dados: 70
Autores: Arcoverde,Sálvio N. S.; Souza,Cristiano M. A. de; Cortez,Jorge W.; Maciak,Paulo A. G.; Suárez,Andrés H. T.
ABSTRACT Machine traffic and conventional tillage can cause structural degradation of the soil, affecting the physical attributes and, consequently, the production and longevity of the sugarcane field. The objective of this study was to evaluate the production components of sugarcane cultivars (RB965902, RB985476, RB966928, RB855156, RB975201, RB975242, RB036066 and RB855536) and physical attributes of a Dystroferric Red Latosol (Oxisol) under no-tillage and reduced-tillage systems. The experiment was conducted using a completely randomized experimental design in an 8 × 2 factorial arrangement, with four replicates. The soil attributes evaluated were density, total porosity, macroporosity, microporosity and penetration resistance. The production components...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Plant cane; Soil management; Reduced-tillage; No-tillage.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000200216

CORN FERTILIZATION USING SWINE WASTEWATER AND SOIL-WATER ENVIRONMENTAL QUALITY
Provedor de dados: 70
Autores: Rosa,Danielle M.; Sampaio,Silvio C.; Pereira,Pâmela A. M.; Reis,Ralpho R. Dos; Sbizzaro,Mariana.
ABSTRACT: Soil application of swine wastewater for nutrient cycling may represent a correct destination of these residues and reduction in production costs. However, when applied to soil, such residue may cause environmental impacts. This study aimed to analyze the chemical characteristics of the soil, corn, and leachate after successive swine wastewater applications associated with mineral fertilization. The experiment was developed in drainage lysimeters under field conditions. Wastewater doses applied were 0, 100, 200, and 300 m3 ha−1 with and without mineral fertilization. The results were submitted to analysis of variance and Tukey's test. After nine years of application, a special attention should be taken regarding water quality from a dose of 200...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Liquid residue of swine; No-tillage; Water reuse.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000400801

Emergence of corn according to the sowing depth of the seed and loads on press wheels
Provedor de dados: 70
Autores: Neto,Pedro H. Weirich; Lopes,Angelo R. C.
The seeding process was the operation that suffered the most changes in no-tillage system due the cover crop soil and new particle soil arrangement. The objective of this study was to verify the effects of loads applied to the wheels and adjustments of sowing depth on seedling emergence of corn in no-tillage system. The experimental design was completely randomized with a factorial arrangement 5x4, with five loads applied to the wheels and four theoretical sowing depth adjustments. The real sowing depth increased in the lower theoretical depth and decreased in the higher theoretical depth, due to the compaction loads. Regarding the time of emergence, loads applied had not influence at the greater depths. Emergence time decreased with the load increase in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seeding process; No-tillage; Farm mechanization.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000200012

SOIL PHYSICAL ATTRIBUTES BEFORE AND AFTER MANAGEMENT UNDER SOWING FORWARD SPEED
Provedor de dados: 70
Autores: Cortez,Jorge W.; Armando,Egas J.; Motomiya,Anamari Viegas de A.; Rodrigues,Sonia A.; Gonçalves,Eduardo A.
ABSTRACT The soil management system affects physical attributes, and the forward sowing speed can increase or decrease its results. Thus, this work aimed to evaluate management systems before and after soil mobilisation and forward sowing speed on soil physical attributes. Thus, an experiment was conduct in a completely randomized block design with four replications and six soil management systems: no tillage (NT), medium harrowing (MH), subsoiling operation (S), subsoiling and medium harrowing operations (S+MH), cross-subsoiling and medium harrowing (S+MH), and ploughing and two medium harrowing (P+2MH), and four forward sowing speeds: 3.1, 5.1, 5.8, and 7.9 km h−1, applied in the subplots. Soil management affects soil penetration resistance (PR) values,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Subsoiling; Conventional tillage; No-tillage.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000500607

Analyzing the efforts in furrow openers used in low power planters
Provedor de dados: 70
Autores: Troger,Henrique C. H.; Reis,Ângelo V. dos; Machado,Antônio L. T.; Machado,Roberto L. T.
The furrow openers for no-till system should be easy to penetrate the soil, generate low levels of soil mobilization and require a little traction force. Thus, the aim of this research was to compare six hoe-type furrow openers, four of industrial manufacturing and two handcrafted models, which were used in planters in the region of Pelotas, Brazil. The parameters for comparison among these furrow openers were the horizontal (Fh) and vertical (Fv) forces acting on the tip of the hoe and the cross-sectional area mobilized in the furrow. The experimental design was randomized, with six treatments (furrow openers) from T1 to T6, with four repetitions, constituted by their passage through plots of 20 x 3 m. The force data were collected by load cells and a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hoe opener; Traction demand; No-tillage.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000600015

Soil penetration resistance in a rhodic eutrudox affected by machinery traffic and soil water content
Provedor de dados: 70
Autores: Moraes,Moacir T. de; Debiasi,Henrique; Franchini,Julio C.; Silva,Vanderlei R. da.
Soil compaction caused by machinery traffic reduces crop yields. This study aimed to evaluate the effects of intensive traffic, and the soil water content, on the soil penetration resistance (PR) of a Rhodic Eutrudox (Distroferric Red Latosol, Brazilian Classification), managed under no-tillage (NT). The experiment consisted of six treatments: NT with recent chiseling, NT without additional compaction, and NT with additional compaction by 4, 8, 10 and 20 passes of a harvester with a weight of 100 kN (70 kN on the front axle). Undisturbed soil samples were collected at 5.5-10.5 cm and 13.5-18.5 cm depth to quantify the soil bulk density (BD). The PR was assessed in four periods, using an impact penetrometer, inserted in the soil to a depth of 46 cm. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil layers with mechanical impedance; No-tillage; Soil compaction; Soil consistency; Soil profile.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400014

Productivity and quality of melon cultivated in a protected environment under different soil managements
Provedor de dados: 75
Autores: Lima,Carlos Eduardo P; Fontenelle,Mariana R; Ligoski,Gabriela R; Madeira,Nuno R; Oliveira,Valter R; Pinheiro,Jadir B; Gondim,Rubens S; Lima,Mirtes F.
ABSTRACT The need to adapt agricultural crops to climate change and to develop more sustainable cultivation systems has been a major challenge for agriculture. In this study the effects of soil conservation practices were evaluated on production aspects of melon (Cucumis melo), cultivar BRS Araguaia, cultivated in a greenhouse under soil and climatic conditions of the Brazilian Cerrado. The adopted experimental design was of randomized blocks with three treatments (soil managements) and six replicates. We evaluated the following soil management systems: no-tillage (PD), minimum tillage (CM) and conventional tillage (PC) in two cycles. Increases in commercial productivity and average number of marketable fruits were observed for PD (61.5 and 61.2 t/ha;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo; No-tillage; Minimum tillage; Conventional tillage; Greenhouse.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000400576

Agricultura conservacionista na produção familiar no Juruá, Acre.
Provedor de dados: 14
Autores: COSTA, F. de S.; KLEIN, M. A.; CAMPOS FILHO, M. D.; SILVA, F. de A. C.; BARDALES, N. G.; SANTIAGO, A. G. C.
Conservação e preservação são conceitos interdependentes e exigem tarefas complexas para implementação nos sistemas agrícolas praticados por produtores familiares na Amazônia. Entretanto, alternativas tecnológicas existem e podem ajudar no desenvolvimento sustentável da Amazônia Brasileira. Apresentar alternativas tecnológicas ao sistema de derruba e queima no Estado do Acre é o principal objetivo deste trabalho. Safras de mandioca e milho foram cultivadas em um Argissolo Amarelo distrófico de Mâncio Lima, região do Juruá, com princípios da agricultura conservacionista no gradiente do sistema convencional da região sem adoção de tecnologia (T) até o sistema conservacionista com plantio direto, cultivo de leguminosa, adubação fosfatada e calcário (PD-MPC)....
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Agricultura conservacionista; Yuca; Território da Cidadania; Vale do Juruá (AC); Mâncio Lima (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Rotación de cultivos; Suelos arcillosos.; Cero labranza; Conservación de suelos; Explotación agrícola familiar; Maíz; Prácticas de conservación de agrícolas; Rendimiento de los cultivos; Agricultura familiar; Plantio direto; Planta de cobertura; Rotação de cultura; Argissolos; Mandioca; Manihot esculenta; Milho; Zea mays; Rendimento; Conservação do solo; Agricultural conservation practice; Family farms; No-tillage; Ground cover plants; Crop rotation; Clay soils; Cassava; Corn; Crop yield; Soil conservation.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1090518

Estimativa da emissão de gases de efeito estufa e da volatilização de amônia em sistemas de manejo de solo e de sucessão/rotação de culturas com trigo.
Provedor de dados: 14
Autores: SANTI, A.; SANTOS, H. P. dos; BAYER, C.; DALMAGO, G. A.; DE BONA, F. D.; SILVA, E. L. da; SCHERER, L. A.; ZEIST, C.
bitstream/item/162965/1/ID44098-2017CTO32.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Plantio convencional; Plantio direto; Metano; Nitrogênio; No-tillage; Methane; Nitrogen; Planting.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1074307

Composição química de plantas de cobertura sob manejo na floração e maturação: efeitos na dinâmica de decomposição de resíduos vegetais.
Provedor de dados: 14
Autores: CARVALHO, A. M. de; SOUZA, L. L. P. de; CASTRO ALVES, P. C. A.; GUIMARAES JUNIOR, R.
bitstream/item/79704/1/bolpd-258.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Green manure; Savanna.; Cerrado; Plantio Direto.; Planta de Cobertura; Cellulose; Hemicellulose; Lignin; No-tillage; Organic matter.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/953747

Teores de hemiceluloses, celulose e lignina em plantas de cobertura com potencial para sistema plantio direto no Cerrado.
Provedor de dados: 14
Autores: CARVALHO, A. M. de; DANTAS, R. DE. A.; COELHO, M. C.; LIMA, W. M.; SOUZA, J. P. S. P. DE; FONSECA, O. P.; GUIMARAES JUNIOR, R.
bitstream/item/75878/1/bolpd-290.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Green manure; Savanna.; Adubo Verde; Celulose; Cerrado; Hemicelulose; Lignina; Plantio Direto.; Hemicellulose; Cellulose; Chemical composition; Lignin; No-tillage; Organic matter.
Ano: 2010
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/883969

Agricultura conservacionista familiar: conhecimento e adoção a partir de experimento de longo prazo.
Provedor de dados: 14
Autores: MALAVALI, F. W.; COSTA, F. de S.; VALENTIM, J. F.; GONZAGA, D. S. de O. M.
O baixo acesso e qualidade dos serviços de assistência técnica e extensão rural na Amazônia e a falta de capital dos agricultores familiares são alguns dos principais desafios à adoção de tecnologias, mesmo aquelas já validadas para as condições de solo e clima da região. Este estudo apresenta os resultados de 50 entrevistas estruturadas, realizadas em maio de 2018, na comunidade Alto Pentecostes, área rural de Mâncio Lima, oeste do Acre. Essas entrevistas avaliaram o grau de conhecimento e o nível de adoção da agricultura conservacionista, desenvolvida pela Embrapa Acre por meio de ações de pesquisa e validação participativa de tecnologias durante 13 anos (2006 a 2018) nessa comunidade. O desenvolvimento dessas ações em uma única propriedade na comunidade...
Tipo: Livros
Palavras-chave: Agricultura conservacionista; Cero labranza; Explotación agrícola familiar; Comunidade Alto Pentecostes; Regional do Juruá (AC); Mâncio Lima (AC); Acre; Sudoeste da Amazônia; Southwestern Amazon; Suroeste de la Amazonia; Selo ODS 2; Selo ODS 12; Selo ODS 13; Selo ODS 15; Selo ODS 17.; Agricultura Familiar; Transferência de Tecnologia; Family farms; No-tillage.
Ano: 2022
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1150091

Manejo conservacionista do solo e produtividade de milho no Juruá.
Provedor de dados: 14
Autores: KLEIN, M. A.; COSTA, F. de S.
O milho é uma das culturas mais versáteis na propriedade agrícola, característica que se deve aos seus múltiplos usos. É insumo básico nas cadeias produtivas de suínos e aves e também na bovinocultura de corte e leite, podendo ser utilizado como silagem. Na alimentação humana, pode ser consumido de forma in natura como milho verde ou seco, na elaboração de bolos e outros alimentos. Por fim, pode simplesmente ser comercializado após atingir seu ponto de colheita. No contexto da agricultura familiar, além de representar importante fonte de renda, o milho pode significar uma alternativa para garantir segurança alimentar.
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Agricultura conservacionista; Regional Juruá; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Maiz; Rentabilidad agrícola.; Rendimiento de los cultivos; Manejo del suelo; Calidad del suelo; Cero labranza; Conservación de suelos; Explotación agrícola familiar; Agricultura familiar; Milho; Zea mays; Rendimento; Rentabilidade; Manejo do solo; Melhoramento do solo; Sistema de cultivo; Plantio direto; Family farms; Corn; Crop yield; Farm profitability; Soil management; Soil quality; No-tillage; Soil conservation.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1068946

Adubacao fosfatada e potassica para a sucessao soja-trigo em latossolo roxo distrofico sob semeadura direta.
Provedor de dados: 14
Autores: LANTMANN, A. F.; ROESSING, A. C.; SFREDO, G. J.; OLIVEIRA, M. C. N. de.
Adubacao fosfatada para a soja; Adubacao potassica para a soja; Adubacao fosfatada para o trigo; Adubacao potassica para o trigo; Efeitos da ausencia de adubacao para soja na sucessao soja-trigo; Efeitos da adubacao e da correcao da acidez sobre os indices de fertilidade do solo; Acidez do solo; Disponibilidade de potassio; Disponibilidade de fosforo; Rendimento do trigo; Rendimento da soja; Analise economica dos efeitos da adubacao para o sistema soja-trigo; Consideracoes finais; Recomendacoes.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Sucessao; Semeadura direta; Brasil; Parana; Soybean; Fertilization; Double-cropping.; Adubação; Soja; Solo.; Brazil; No-tillage; Soil.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445885

AGRICULTURA conservacionista fogo zero: produção agrícola familiar em solos arenosos do Juruá, Acre.
Provedor de dados: 14
A agricultura conservacionista é um princípio de uso da terra para aumento da dignidade humana no campo com respeito ambiental. Suas práticas são: plantio direto, cobertura permanente do solo e diversificação de plantas cultivadas. O fogo zero é prática adicional na Amazônia em substituição à agricultura de derruba e queima para o equilíbrio da relação homem-solo-planta-atmosfera.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Fogo zero; Zero fire; Cero labranza; Plantas de cobertura; Diversidad multicultural; Suelos arenosos; Regional do Juruá; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Plantio Direto; Cobertura do Solo; Diversificação de Cultura; Solo Arenoso; No-tillage; Ground cover plants; Multicultural diversity; Sandy soils.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1135472

Avaliação ex ante do Índice de Qualidade Participativo do Plantio Direto (IQP) com produtores do Centro-Sul do Brasil.
Provedor de dados: 14
Autores: MARTINS, A. L. da S.; CONTE, O.; OLIVEIRA, P. de; DOSSA, A. A.; DEBIASI, H.; FRANCHINI, J. C.; HERNANI, L. C.; RALISCH, R.; LEONARDO, H. C. L.; LUNARDI, L.; SALTON, J. C.; TOMAZI, M.; PITOL, C.; DE BONA, F. D.; BOEIRA, R. C.
O presente trabalho objetiva avaliar o método para se obter o IQP (fase ex ante) em 12 microbacias hidrográficas, conduzidas em SPD, localizadas na região Centro-Sul do Brasil (Goiás, Mato Grosso do Sul, São Paulo, Paraná e Rio Grande do Sul), visando a obter o entendimento fundamental para a subsequente validação, adaptação e aplicação desse indicador em outras regiões.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: IQP; Rede de Pesquisa SoloVivo; Plantio Direto; Manejo; Agricultura Sustentável; No-tillage; Agricultural management.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1104307

Recomendacoes tecnicas para o cultivo da soja: areas do Sul do Mato Grosso do Sul, Sudoeste, Norte e Oeste do Parana Zonas 15, 61, 75, 76, 77 e 92.
Provedor de dados: 14
Autores: BRASIL. Ministerio da Agricultura e Reforma Agraria.
A soja e a regiao; Manejo e conservacao do solo; Recomendacoes de cultivares e qualidade das sementes; Praticas culturais; Colheita.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Armazenagem; Planta daninha; Controle; Brasil; Parana; Sao Paulo; Mato Grosso do Sul; Soybean; Management; Conservation; Recommendation; Variety; Quality; Seed; Cultural practice; Harvest; Fertilization; Weed; Control; Disease; Loss; Pest; Adubação; Calagem; Doença; Época de Plantio; Perda; Plantio Direto; Praga; Rotação de Cultura; Semeadura; Soja; Brazil; Crop rotation; Liming; No-tillage; Soil; Sowing date; Storage.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445250

Agricultura conservacionista: solução de inovação tecnológica e econômica para a produção diversa em solos arenosos do Juruá, Acre, Sudoeste da Amazônia - resultados integrados de 13 Anos.
Provedor de dados: 14
Autores: COSTA, F. de S.; SÁ, C. P. de; LAMBERTUCCI, D. M.; TAVELLA, L. B.; BRITO, E. de S.; KLEIN, M. A.; DICK, D. P.
A natureza intrínseca dos solos da região do Juruá e as condições atuais de manejo às quais esses solos estão submetidos aceleram ainda mais a redução contínua de sua qualidade física e química, exigindo uma solução técnica para reverter essa situação. Uma alternativa de solução técnica para as condições atuais da produção familiar no Juruá compreende o manejo das áreas já desmatadas, queimadas e cultivadas com tecnologias que permitam a recuperação e manutenção da qualidade do solo, com ganhos agronômicos, econômicos e ambientais. Um aspecto relevante é que a recuperação e manutenção da qualidade do solo podem contribuir de forma direta e/ou indireta para a redução do desmatamento e eliminação do uso do fogo na produção familiar da região. Os resultados...
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Agricultura conservacionista; Suelos arenosos; Cero labranza; Cultivo mixto; Rotación de cultivos; Adopción de innovaciones; Ramal Alto Pentecostes; Mâncio Lima (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Agricultura Familiar; Solo Arenoso; Plantio Direto; Consorciação de Cultura; Rotação de Cultura; Arroz; Oryza Sativa; Feijão; Phaseolus Vulgaris; Milho; Zea Mays; Planta de Cobertura; Cobertura do Solo; Transferência de Tecnologia; Adoção de Inovações; Agricultural conservation practice; Sandy soils; No-tillage; Mixed cropping; Crop rotation; Rice; Beans; Corn; Ground cover plants; Technology transfer; Innovation adoption.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1121607

Proposta de índice de qualidade participativo do plantio direto para condições de irrigação por pivô central - IQPi.
Provedor de dados: 14
Autores: OLIVEIRA, P. de; TAVARES, S. R. de L.; MARTINS, A. L. da S.; RALISCH, R.; HERNANI, L. C.
Resumo: Este documento apresenta uma proposta de adaptação do índice de qualidade participativo (IQP) para a avaliação do manejo em SPD em condições de irrigação com base em questões que visam traduzir as recomendações técnicas em práticas a serem adotadas na produção agropecuária, mediante a autoavaliação do produtor rural e seus técnicos em nível de gleba cultivada com irrigação por pivô central. Embora esta proposta tenha sido consolidada regionalmente com a participação de vários apoiadores, ainda necessita ser devidamente validada.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Índice de qualidade participativo; Plantio Direto; Irrigação por Pivô Central; Qualidade; Manejo de Água; Manejo do Solo; Conservação do Solo; Center pivot irrigation; No-tillage; Quality control.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1113055

Avaliação do potencial de prestação de serviços ambientais em sistema plantio direto (SPD).
Provedor de dados: 14
Autores: TURETTA, A. P. D.; HERNANI, L. C.; PRADO, R. B.; FIDALGO, E. C. C.; RALISCH, R.; MARTINS, A. L. da S.
Estima-se que a população mundial em 2030 será de 8,3 bilhões de pessoas, pressionando ainda mais as fontes de energia, água, alimentos, uso da terra e extração mineral, sobretudo em países em desenvolvimento (ROCKEFELLER FOUNDATION..., 2010). Até 2050, a agricultura precisará produzir globalmente 60% a mais de alimentos, e 100% a mais nos países em desenvolvimento (WWAP, 2015). Esse cenário coloca a atividade agrícola em lugar de destaque na agenda global e expande a discussão para além da produção de alimentos, incluindo temas como o seu potencial em gerar outros benefícios aos ecossistemas e à sociedade, partindo-se do conceito de multifuncionalidade da agricultura, que ocorre quando esta desempenha outras funções além do seu principal papel na produção...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Serviços Ambientais; Agricultura Sustentável; Plantio Direto; Sustainable agriculture; No-tillage; Ecosystem services.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1122288

Adubação mineral para mandioca e efeito residual no milho em rotação em solo arenoso de Mâncio Lima, Juruá, Oeste do Acre, Sudoeste da Amazônia brasileira.
Provedor de dados: 14
Autores: COSTA, F. de S.; TAVELLA, L. B.; BRAVIN, M. P.; SOUZA, J. F. de; LAMBERTUCCI, D. M.
O parcelamento da adubação mineral no manejo conservacionista do solo sincronizado com a necessidade de nutrientes da mandioca aumenta a sua produção, bem como a de culturas em rotação devido ao efeito residual dessa adubação. São apresentados os resultados dessa hipótese em dois estudos em delineamento experimental de blocos casualizados com quatro repetições. No primeiro estudo foi avaliado o desempenho agronômico da mandioca em resposta à adubação mineral em seis épocas de parcelamento: T1 (controle) - calcário; T2 - calcário + K e P 100% no plantio e com N 100% aos 30 dias após o plantio (DAP); T3 - calcário + K e P 50% no plantio e 50% aos 60 DAP e com N 50% aos 30 DAP e 50% aos 60 DAP; T4 - calcário + K e P 50% no plantio e 50% aos 90 DAP e com N 50%...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Agricultura conservacionista; Yuca; Prácticas de cultivo vegetal; Prácticas de conservación de agrícolas; Cero labranza; Rotación de cultivos; Adubo mineral; Fertilizantes minerales; Maíz; Efectos residuales; Mâncio Lima (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Mandioca; Manihot Esculenta; Milho; Zea Mays; Efeito Residual; Pratica Cultural; Solo Arenoso; Plantio Direto; Rotação de Cultura; Planta de Cobertura; Fertilizante; Cassava; Corn; Residual effects; Plant cultural practices; Agricultural conservation practice; Sandy soils; No-tillage; Crop rotation; Ground cover plants; Mineral fertilizers.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1126831

Indicadores de qualidade da gestão de áreas com sistema plantio direto: palestras e resumos.
Provedor de dados: 14
Autores: WORKSHOP DA REDE DE PESQUISA SOLOVIVO, 2018, Curitiba.
bitstream/item/210167/1/CNPS-DOC-212-2019.epub
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Plantio Direto; Manejo do Solo; No-tillage; Soil management.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1114001

Plantio direto a lanço dos capins Xaraés e Piatã no Acre.
Provedor de dados: 14
Autores: ANDRADE, C. M. S. de; ABREU, A. de Q.; ZANINETTI, R. A.; FARINATTI, L. H. E.; FERREIRA, A. S.; VALENTIM, J. F.
Os capins xaraés e piatã são atualmente as duas únicas cultivares de Brachiaria brizantha recomendadas para formação de pastagens no Acre. O capim-xaraés, também conhecido como capim-MG5, é a cultivar mais plantada atualmente no Acre, por sua alta produtividade e boa resistência à síndrome da morte do capim-brizantão (ANDRADE; ASSIS, 2008). Já o capim-piatã é menos resistente a essa doença e tem sido utilizado com sucesso somente em áreas menos sujeitas ao encharcamento do solo (ANDRADE; ASSIS, 2010).
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Boas práticas; Capim Xaraés; Capim Piatã; Palisade signalgrass; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Siembra directa.; Cero labranza; Pastizales; Pastos forrajeros; Semeadura a lanço.; Capim Brachiaria; Brachiaria brizantha; Plantio direto; Pastagem; Gramínea forrageira; No-tillage; Urochloa brizantha; Forage grasses; Pastures; Direct seeding.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1032779

Uso de métodos laboratoriais e de campo para avaliação de atributos físicos do solo em lavouras de soja e milho.
Provedor de dados: 14
Autores: TOMAZI, M.; SALTON, J. C.; SANCHES, P. E. S.; COMUNELLO, E.
bitstream/item/218502/1/SOLO-VIVO-P.-198.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Atributos do solo; Produção de grãos; Soil roof; Grains production; Plantio Direto; Conservação do Solo; Cobertura do Solo; No-tillage; Soil conservation.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1127368

Cultura do girassol: tecnologia de produção.
Provedor de dados: 14
Autores: CASTRO, C. de; CASTIGLIONI, V. B. R.; BALLA, A.
Escolha de area e preparo do solo; Correcao da acidez; Adubacao; Epoca de plantio; Plantio; Densidade; Controle de plantas daninhas; Doencas e pragas; Colheita.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Preparo do solo; Semeadura direta; Densidade; Planta daninha; Brasil; Parana; Sunflower; Production; Disease; Pest.; Acidez do Solo; Adubação; Colheita; Época de Semeadura; Doença; Girassol; Plantio Direto; Praga; Produção.; Fertilizer application; Harvesting; Brazil; Density; No-tillage; Soil pH; Sowing date; Tillage; Weeds.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/459921

Recomendacoes tecnicas para o cultivo de soja: Nordeste de Sao Paulo, Minas Gerais, Bahia, Maranhao e Piaui Zonas 55, 61, 91 e 92.
Provedor de dados: 14
Autores: BRASIL. Ministerio da Agricultura e Reforma Agraria.
A soja e a regiao; Manejo e conservacao do solo; Recomendacoes de cultivares e qualidade das sementes; Praticas culturais; Colheita.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Armazenagem; Planta daninha; Controle; Brasil; Sao Paulo; Minas Gerais; Bahia; Maranhao; Piaui; Soybean; Management; Conservation; Recommendation; Variety; Quality; Seed; Cultural practice; Harvest; Fertilization; Weed; Control; Disease; Pest; Loss; Adubação; Calagem; Doença; Época de Plantio; Perda; Plantio Direto; Praga; Soja; Brazil; Liming; No-tillage; Soil; Sowing date; Storage.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445249

Importância do sistema de semeadura direta na população microbiana do solo.
Provedor de dados: 14
Autores: HUNGRIA, M.; ANDRADE, D. de S.; BALOTA, E. L.; COLOZZI-FILHO, A.
bitstream/item/53932/1/56.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Semeadura direta; Brasil; Parana.; Biologia do Solo.; Brazil; No-tillage; Soil biology.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/460390

Manejo integrado de plantas daninhas na soja após milho e braquiária no outono-inverno.
Provedor de dados: 14
Autores: MELO, T. S.; ABREU, H. K. A. de; FACHINELLI, R.; CORREIA, M. V.; CECCON, G.
bitstream/item/190003/1/ORAL18.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Fitossociologia; Erva Daninha; Soja; Plantio Direto; Weeds; Soybeans; No-tillage.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1103329

Semeadura direta da soja: fatores de eficiência no controle de plantas daninhas e recomendações.
Provedor de dados: 14
Autores: VOLL, E.; DAVIS, G. G.; CERDEIRA, A. L.
Implantacao do sistema; Caracterizacao do sistema; Alternativas de controle; Fatores de eficiencia no controle; Manejo da area e das culturas; Especies, niveis da infestacao e desenvolvimento das invasoras; Restos de cultura; Herbicidas dessecantes e residuais em separado; Herbicidas dessecantes e pos-emergentes; Combinacoes e misturas de herbicidas dessecantes, residuais e pos-emergentes; Outros fatores; Modo de aplicacao; Recomendacoes.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Soja; Erva daninha; Plantio direto; Soybeans; Weeds; No-tillage.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/444496

Resumos...
Provedor de dados: 14
Autores: ENCONTRO DE PRODUÇÃO CIENTÍFICA DA EMBRAPA ALGODÃO, 28., 2021, Campina Grande, PB.
Formar pessoas capazes de buscar conhecimentos por meio da pesquisa e saber utilizá-los em benefício da sociedade. Este é um dos grandes desafios que resume a importância do Programa Institucional de Bolsas de Iniciação Científica do Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq/Pibic) para estudantes de graduação nas universidades, em parceria com institutos de pesquisa. É dentro desta perspectiva que o Encontro de Produção Científica (EPC) se insere como uma etapa obrigatória do processo formal de avaliação dos bolsistas do Programa, enquanto orientandos dos pesquisadores da Embrapa Algodão. Anualmente, o EPC proporciona a estudantes iniciantes na pesquisa a participação em um evento de natureza científica, em que são apresentados...
Tipo: Anais e Proceedings de eventos
Palavras-chave: Algodão; Pesquisa Agrícola; Agricultura; Tecnologia; Controle Químico; Herbicida; Soja; Milho; Cotton; Research; Chemical control; No-tillage; Soybeans; Biotechnology; Herbicides; Agriculture.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1138090

Gradiente de concentração de nutrientes no perfil e acidez em subsuperfície do solo sob sistema plantio direto consolidado: o que fazer?
Provedor de dados: 14
Autores: DE BONA, F. D.
Resumo: O surgimento de alterações químicas como o gradiente de concentração de nutrientes e a acidez em subsuperfície de solos manejados a médio ou longo tempo sob sistema plantio direto tem causado preocupação aos técnicos e produtores rurais. O presente trabalho objetivou avaliar a ação de práticas químicas e mecânicas visando homogeneizar a distribuição de macronutrientes e a correção da acidez no perfil do solo conduzido sob sistema plantio direto consolidado. Os tratamentos experimentais foram constituídos por uma combinação de práticas de natureza mecânica (aração, gradagem e escarificação) e química (calagem, adubação fosfatada e gessagem) em área de lavoura que estava sob sistema plantio direto há 24 anos. Os gradientes de acidez e de concentração...
Tipo: Folhetos
Palavras-chave: Sistema plantio direto; No-tillage system; Fertilizing; Maize.; Fertilidade do Solo; Adubação; Manejo do Solo; Soja.; Milho; Trigo; Soil fertility; Soil management; No-tillage; Soybeans; Wheat.
Ano: 2022
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1139941

Semente define o sucesso do plantio.
Provedor de dados: 14
Autores: PEREIRA FILHO, I. A.
bitstream/item/94713/1/Semente-define.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Milho; Safrinha; Performance; Variedade; Plantio direto; No-tillage; Varieties; Corn.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/974961

Aveia preta para cobertura vegetal do solo EMBRAPA 140 (Campeira-Mor).
Provedor de dados: 14
Autores: GAUDENCIO, C. de A.
Cultivar de aveia preta (Avena strigosa): Embrapa 140 (Campeira-Mor). Origem. Características fenológcias.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Cobertura do solo; Matéria orgânica; Cobertura vegetal; Solo; Plantio direto; Vegetation cover; Soil organic matter; No-tillage.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/461398

Plantio direto do feijão na palha do arroz: alternativa para controle da "Mela do Feijoeiro".
Provedor de dados: 14
Autores: CAMPOS, I. S.; GOMES, T. C. de A.; PAZ, F. das C. A.
A doença conhecida como Meia do Feijoeiro", causada pelo fungo de solo (Thanatephorus cucumens), é um dos fatores limitantes da cultura do feijão (Phaseolus vulgaris) na região amazônica. A produtividade obtida no Estado do Acre, nos últimos anos, não ultrapassou 600 Kg/ha. Nesta região, as lavouras tradicionalmente implantadas na segunda quinzena de março e início de abril, geralmente, são atacadas pela "Mela» com perda total da produção. Mesmo quando as plantas chegam a frutificar, os grãos são danificados pela doença. Agricultores que plantam um pouco mais tarde, conseguem colheitas razoáveis. Entretanto, o plantio tardio tem provocado muitas perdas devido a falta de chuvas por ocasião da floração do feijão. Com o impacto da chuva o fungo presente no...
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Mela do feijoeiro; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Paja de arroz.; Marchitez; Enfermedades y desórdenes de las plantas; Cero labranza; Frijoles; Feijão; Phaseolus vulgaris; Plantio direto; Palha de arroz; Doença de planta; Fungo; Thanatephorus cucumeris; Beans; No-tillage; Rice straw; Plant diseases and disorders; Fungi; Blight.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492178

Plantio direto: solo coberto, invasoras ausentes.
Provedor de dados: 14
Autores: CONCENCO, G.
bitstream/item/68502/1/Artigo-AGranja.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Planta daninha.; No-tillage; Weeds.
Ano: 2012
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/937515

Sistema plantio direto: o produtor pergunta, a Embrapa responde.
Provedor de dados: 14
Autores: SALTON, J. C.; HERNANI, L. C.; FONTES, C. Z.
Introdução; Conceitos, Adoção, Palha; Manejo do material orgânico; Culturas, sucessões e rotações; Água e temperatura no solo; Biologia do solo; Compactação do solo; Terraços; Correção do solo; Adubação; Coleta de amostras de solo e de planta; Mecanização; Tecnologia de aplicação de defensivos agrícolas; Plantas daninhas e seu controle; Manejo de pragas; Manejo de doenças; Integração agricultura-pecuária; Custos de produção; Agricultura de precisão.
Tipo: Col Criar Plantar ABC 500P/500R Saber (INFOTECA-E)
Palavras-chave: Adubação; Agricultura de Precisão; Biologia do Solo; Cerrado; Compactação do Solo; Custo de Produção; Doença de Planta; Matéria Orgânica; Mecanização Agrícola; Plantio Direto; Rotação de Cultura; Sistema de Cultivo; Tecnologia; Disease control; Fertilizer application; No-tillage; Organic matter; Pesticides; Soil biology; Technology; Weed control.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1124531

Estimativa de custos de produção de milho safrinha, em plantio direto na palha, para a região do cerrado de Rondônia, safra 1998.
Provedor de dados: 14
Autores: GODINHO, V. de P. C.; PRADO, E. E. do; UTUMI, M. M.; OLIVEIRA, S. J. de M.
A expectativa de bons preços para o milho devido o baixo estoque internacional, associados à criação do corredor de exportação BR 364 - hidrovia Madeira-Amazonas tem gerado novas perspectivas para cultura no estado de Rondônia. Além disso, a cultura se ajusta perfeitamente a um programa de sucessão à cultura da soja, uma necessidade agronômica. Este trabalho foi efetuado com o objetivo de apresentar uma primeira estimativa dos custos: fixo, variável e total da cultura em plantio direto.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Vilhena (RO); Rondônia; Amazônia Ocidental; Western Amazon.; Milho; Zea Mays; Plantio Direto; Safrinha; Cerrado; Fertilidade do Solo; Produtividade; Custo de Produção.; No-tillage; Cerrado soils; Corn; Production costs.; Crop yield; Soil fertility.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/706741

Crescimento e matéria seca da Crotalaria juncea L. em diferentes sistemas de preparo de solo.
Provedor de dados: 14
Autores: JUREMEIRA, J. S.; KURIHARA, C. H.; STAUT, L. A.; TOMAZI, M.; SILVA, C. J. da.
bitstream/item/189941/1/ORAL11.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Produtividade; Solo; Biomassa; Adubação Verde; Plantio Direto; Crotalária; Seed productivity; Biomass; Green manures; No-tillage.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1103260

Descrição dos sistemas de preparo.
Provedor de dados: 14
Autores: ROMAN, E. S.
Descrição do sistema de plantio direto; Principais vantagens do sistema; Controle de erosão; Conservação da umidade na superfície; Aumento no teor de matéria orgânica e melhoria da estrutura do solo; Época de plantio; Produtividade.
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Brasil; Rio Grande do Sul; Soybean.; Plantio Direto.; Brazil; No-tillage; Wheat.
Ano: 1978
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/823948

Índice de qualidade participativo do plantio direto para a região de Rio Verde, GO (IQP-RV).
Provedor de dados: 14
Autores: MARTINS, A. L. da S.; HERNANI, L. C.; PEETERS, C. L.; GONÇALO, T. P.
Este documento vem disponibilizar aos técnicos e produtores rurais uma proposta técnica de adaptação do IQP às condições da região de Rio Verde, GO, na expectativa de contribuir com o aprimoramento do manejo adotado em áreas com o Sistema Plantio Direto no Sudoeste Goiano e em outras regiões com características edafoclimáticas e sistemas de produção semelhantes.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Rede de Pesquisa SoloVivo; Qualidade do solo; Plantio Direto; Manejo do Solo; No-tillage; Soil management; Soil quality.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1116940

Condições necessárias para a implantação do plantio direto.
Provedor de dados: 14
Autores: ROMAN, E. S.
Planejamento; Escolha da área; Preparar e calibrar as máquinas; Controle de ervas; Plantio; Assistência técnica; Mecânica de aplicação; Parâmetros principais da mecânica de aplicação; Cobertura e penetração; Considerações sobre equipamento terrestre para aplicação de herbicidas; Calibração do equipamento.
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Brasil; Soybean.; Brazil; No-tillage; Wheat.
Ano: 1978
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/823944

Amostragem de solo em plantio direto para aplicação em agricultura de precisão.
Provedor de dados: 14
Autores: CARVALHO, J. R. P. de.
O objetivo deste estudo seria a comparação das diversas técnicas estatísticas disponíveis, visando o estudo da amostragem de solo para plantio direto. Com a formação de bases de dados digitais e melhores métodos para coleção de dados e análise geoestatfstica, estudos mais detalhados podem ser realizados sobre a variação dos solos e suas conseqüências.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Pedometria; Amostragem de solo; Geoestatística; Pedometric.; Agricultura de Precisão; Plantio Direto.; Soil sampling; No-tillage; Geostatistics; Precision agriculture.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/7537

AGRICULTURA conservacionista: viabilidade técnica e econômica em solos arenosos do Juruá, Acre.
Provedor de dados: 14
As práticas utilizadas na agricultura conservacionista (plantio direto, cobertura permanente do solo e diversidade de cultivos) foram associadas ao não uso do fogo, associadas ao uso do calcário, adubos e defensivos. A agricultura conservacionista apresenta resultados conforme o tempo de sua adoção e viabiliza o aumento da produtividade, a segurança alimentar e o aumento da renda dos produtores familiares.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Fogo zero; Zero fire; Cero labranza; Plantas de cobertura; Diversidad multicultural; Suelos arenosos; Análisis económico; Acre; Regional do Juruá; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Plantio Direto; Cobertura do Solo; Diversificação de Cultura; Solo Arenoso; Análise Econômica; No-tillage; Ground cover plants; Multicultural diversity; Sandy soils; Economic analysis.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1135510

Rendimento de grãos de trigo influenciado por sistemas de manejo de solo e de rotação de culturas.
Provedor de dados: 14
Autores: SANTOS, H. P. dos; FONTANELI, R. S.; DALMAGO, G. A.; CASTRO, R. L. de; SANTI, A.; NASCIMENTO JUNIOR, A. do; POSSEBOM, T.; ARAÚJO, E. M. de.
bitstream/item/183649/1/ID44363-2018BPD90.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Trigo; Rotação de Cultura; Plantio Direto; Manejo do Solo; Wheat; Crop rotation; No-tillage; Soil management.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1096512

Cultura do girassol: tecnologia de produção.
Provedor de dados: 14
Autores: CASTRO, C. de; CASTIGLIONI, V. B. R.; BALLA, A.
Escolha da area e preparo do solo; Correcao da acidez; Adubacao; Epoca de plantio; Plantio; Densidade; Controle de plantas daninhas; Doencas e pragas; Colheita.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Preparo; Semeadura direta; Epoca; Densidade; Planta daninha; Brasil; Sunflower; Production; Fertilization; Weed; Disease; Pest; Harvest.; Acidez; Adubação; Colheita; Doença; Girassol; Pesquisa; Praga; Semeadura; Produção; Solo.; Acidity; Density; Brazil; No-tillage; Research; Sowing date.; Soil.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445278

Produtividade de beterraba (Beta vulgaris L.) em dois sistemas de cultivo.
Provedor de dados: 14
Autores: NUNES, M. U. C.
A beterraba, hortaliça pertencente à família Chenopodiacae é nativa da Europa, Norte da África e Oeste da Ásia. É mais cultivada nos países de clima temperado, sendo que no Brasil seu cultivo concentra-se em São Paulo, Minas Gerais e nos Estados do Sul. É uma cultura mais adaptada ao clima ameno com temperatura média de 15 °C a 18°C, tolerando variações de 4°C a 24°C. Em temperaturas altas as raízes apresentam, em secção transversal, anéis de cor clara alternados com anéis de coloração violeta escuro, e que é considerado como demérito da qualidade. As raízes de beterraba são de grande importância econômica devido ao seu alto valor nutritivo e industrial sendo também uma planta de fácil cultivo. A propagação se faz diretamente pela semente podendo-se...
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Remolachas; Ensayos de variedades; Cero labranza; Trasplante (plantas).; Rendimiento de los cultivos; Beterraba; Beta vulgaris; Sistema de cultivo; Plantio direto; Transplante de Planta; Comportamento de variedade; Rendimento; Beets; No-tillage; Transplanting (plants); Variety trials; Crop yield.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492335

Impact of cultivation systems on Dichelops melacanthus (Dallas) (Heteroptera: Pentatomidae) population and damage and its chemical control on wheat
Provedor de dados: 82
Autores: Chocorosqui,Viviane R.; Panizzi,Antônio R.
Results of field evaluations indicated that the neotropical pentatomid Dichelops melacanthus (Dallas) is associated with wheat, Triticum aestivum L. In the no-tillage cultivation system, adults and nymphs were mostly found on the soil, near the plant stems and underneath crop residues of the preceding summer crop, usually soybean, Glycine max (L.) Merrill, or corn, Zea mays L. Wheat grown under the conventional cultivation system showed minimal bug attack. D. melacanthus caused substantial damage to no-tillage wheat plants, particularly to seedlings. Bug attack reduces the number of seed heads of up to 34%. Seed yield was reduced in 31% due to the bugs' feeding, compared to plants free of damage. All developmental phases of the wheat plant were susceptible...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Insecticide; No-tillage; Seed treatment; Stink bug.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000400014

Corn crop performance in an Ultisol compacted by tractor traffic
Provedor de dados: 86
Autores: Moraes,Moacir Tuzzin de; Levien,Renato; Trein,Carlos Ricardo; Bonetti,João de Andrade; Debiasi,Henrique.
Abstract: The objective of this work was to determine whether compaction by tractor traffic in areas managed under controlled traffic can be limiting to corn crop, under different tillage systems, in a Typic Paleudult of medium texture. Two experiments were carried out, one in the field over two crop seasons and another in a greenhouse. The treatments consisted of minimum tillage with chiselling; no-tillage subjected to one, three, or six passes of a tractor weighing 3.8 Mg; and an area without traffic. Evaluations were performed for soil physico-hydraulic parameters (soil bulk density, penetration resistance, and water retention curve), root and shoot growth, and grain yield. The agricultural traffic increased bulk density, soil penetration resistance,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Grain yield; No-tillage; Root growth; Soil compaction.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400464

Soil macrofauna under integrated crop-livestock systems in a Brazilian Cerrado Ferralsol
Provedor de dados: 86
Autores: Marchão,Robélio Leandro; Lavelle,Patrick; Celini,Leonide; Balbino,Luiz Carlos; Vilela,Lourival; Becquer,Thierry.
The objective of this work was to assess the effects of integrated crop-livestock systems, associated with two tillage and two fertilization regimes, on the abundance and diversity of the soil macrofauna. Four different management systems were studied: continuous pasture (mixed grass); continuous crop; two crop-livestock rotations (crop/pasture and pasture/crop); and native Cerrado as a control. Macrofauna was sampled using a modified Tropical Soil Biology and Fertility method, and all individuals were counted and identified at the morphospecies level for each plot. A total of 194 morphospecies were found, distributed among 30 groups, and the most representative in decreasing order of density were: Isoptera, Coleoptera larvae, Formicidae, Oligochaeta,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Crop-pasture rotation; No-tillage; Soil invertebrates; Soil quality.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800033

Winter pasture and cover crops and their effects on soil and summer grain crops
Provedor de dados: 86
Autores: Balbinot Junior,Alvadi Antonio; Veiga,Milton da; Moraes,Anibal de; Pelissari,Adelino; Mafra,Álvaro Luiz; Piccolla,Cristiano Dela.
The objective of this work was to evaluate the effect of winter land use on the amount of residual straw, the physical soil properties and grain yields of maize, common bean and soybean summer crops cultivated in succession. The experiment was carried out in the North Plateau of Santa Catarina state, Brazil, from May 2006 to April 2010. Five strategies of land use in winter were evaluated: intercropping with black oat + ryegrass + vetch, without grazing and nitrogen (N) fertilization (intercropping cover); the same intercropping, with grazing and 100 kg ha-1 of N per year topdressing (pasture with N); the same intercropping, with grazing and without nitrogen fertilization (pasture without N); oilseed radish, without grazing and nitrogen fertilization...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compaction; Cover crops; Crop-livestock integration; No-tillage; Organic carbon.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001000032

Agronomic performance of soybean grown in succession to winter cover crops
Provedor de dados: 86
Autores: Krenchinski,Fábio Henrique; Cesco,Victor José Salomão; Rodrigues,Danilo Morilha; Albrecht,Leandro Paiola; Wobeto,Katle Samaya; Albrecht,Alfredo Júnior Paiola.
Abstract: The objective of this work was to evaluate the effect of winter cover crop species on the agronomic performance of soybean (Glycine max) cropped in succession, under a no-tillage system. The study was conducted during three crop seasons (2011/2012, 2012/2013, and 2013/2014), with the following cover crops: white oat (Avena sativa), black oat (Avena strigosa), ryegrass (Lolium multiflorum), vetch (Vicia sativa), forage radish (Raphanus sativus), the intercrop black oat + forage radish, and wheat (Triticum aestivum) as the standard management. Forage radish and the intercrop black oat + forage radish provided greater soil cover rates after 30 days of planting, as well as dry matter production in the three crop seasons. After 45 and 90 days from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Crop rotation; Mulching; No-tillage; Soil cover.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000800909

Role of soil carbon in the landscape functioning of the Alto São Bartolomeu watershed in the Cerrado region, Brazil
Provedor de dados: 86
Autores: Alves,Ray Pinheiro; Couto Junior,Antonio Felipe; Martins,Eder de Souza; Nardoto,Gabriela Bielefeld.
Abstract The objective of this work was to evaluate the effect of soil carbon on landscape functioning of the Oxisols covering the plateaus of the Alto São Bartolomeu watershed, in the Cerrado (Brazilian savanna) region of Central Brazil. Soil organic carbon (SOC) concentration, carbon stocks, and some soil physical and chemical characteristics were determined at the 0-0.20-m depth on native and anthropogenic areas. Soils from cerrado stricto sensu patches were similar both physically and chemically, being affected by exchangeable Al3+ and by SOC concentrations, while anthropogenic matrices were affected by soil bulk density, pH, extractable P, and exchangeable Ca2+ and Mg2+. The estimate of spatial distribution of soil carbon better fitted had an adjusted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian savanna; No-tillage; Oxisol; Pasture; Pedotransfer function; Vegetation indices.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901241

Water storage in a Plinthaqualf cultivated with sugarcane under straw levels
Provedor de dados: 86
Autores: Anjos,João Carlos Rocha dos; Andrade Júnior,Aderson Soares de; Bastos,Edson Alves; Noleto,Donavan Holanda; Melo,Francisco de Brito; Brito,Raimundo Rodrigues de.
Abstract: The objective of this work was to evaluate water storage in a Plinthaqualf under different straw levels during the fourth ratoon season of a sugarcane (Saccharum officinarum) crop. The study was conducted in the 2013/2014 crop season, with the cultivar SP-813250, at two soil depths (0.0-0.3 and 0.3-0.6 m), in a randomized complete block design, with five straw levels (0.0, 4.2, 9.5, 13.0, and 18.4 Mg ha-1) and four replicates. Soil moisture content was monitored with a time-domain reflectometer. The straw provided gains of up to 20 Mg ha-1 stems and kept increased water storage in the soil, in comparison with the soil without straw, in all evaluated periods. Maintenance of up to 50% (9.5 Mg ha-1) of sugarcane straw on soil surface promotes better...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum officinarum; No-tillage; Soil mulch; Water balance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000600464

Economic analysis of sorghum consortia with forages or with dwarf pigeon pea succeeded by soybean or corn
Provedor de dados: 86
Autores: Pascoaloto,Isabô Melina; Andreotti,Marcelo; Cruz,Sanderley Simões da; Sabbag,Omar Jorge; Borghi,Emerson; Lima,Gilmar Cotrin de; Modesto,Viviane Cristina.
Abstract: The objective of this work was to determine the most economically viable integrated no-tillage crop-livestock system by intercropping sorghum with tropical forages or dwarf pigeon pea, succeeded by soybean or corn, over a two-year period. The experiment was carried out in a randomized complete block design with four replicates. The treatments consisted of forage sorghum intercropped with: 'Marandu' grass; 'Marandu' grass and dwarf pigeon pea; 'Mombaça' grass; 'Mombaça' grass and dwarf pigeon pea; and dwarf pigeon pea and single sorghum, harvested for silage in the first cut and regrowth, succeeded by soybean or corn. The following calculations were made: effective operational cost, total operational costs, gross revenues, operational income,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cajanus cajan; Megathyrsus maximus; Urochloa brizantha; Integrated crop-livestock system; No-tillage; Profitability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001000833

Faunistic analysis of Carabidae and Staphylinidae (Coleoptera) in five agroecosystems in northeastern São Paulo state, Brazil
Provedor de dados: 86
Autores: Cividanes,Francisco Jorge; Barbosa,José Carlos; Ide,Sérgio; Perioto,Nelson Wanderlei; Lara,Rogéria Inês Rosa.
The objective of this study was to determined species composition and community structure of Carabidae and Staphylinidae in five areas of forest fragment and soybean/corn crops or orange orchard, from December 2004 to May 2007. Beetles were captured in pitfall traps distributed along two parallel transects of 200 m in length, placed across crop land/forest boundary fragment, with 100 m each. The Shannon-Wiener diversity and evenness indexes and Morisita similarity index were calculated. The carabids Abaris basistriatus Chaudoir, Calosoma granulatum Perty, Megacephala brasiliensis Kirby, Odontochila nodicornis (Dejean) and Selenophorus seriatoporus Putzeys. are dominant and are widely distributed in northeastern São Paulo state, Brazil. Point-scale species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis; Glycine max; Zea mays; Diversity; No-tillage; Similarity.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800023

Soil organic matter as affected by management systems, phosphate fertilization, and cover crops
Provedor de dados: 86
Autores: Souza,Géssica Pereira de; Figueiredo,Cícero Célio de; Sousa,Djalma Martinhão Gomes de.
Abstract The objective of this work was to evaluate the effects of soil management systems, cover crops, and phosphate fertilization on soil humic fractions in a long-term experiment. The treatments consisted of conventional tillage and no-tillage with pearl millet (Pennisetum glaucum) or velvet bean (Mucuna aterrima) as cover crops, at two doses of phosphorous: 0 and 100 kg ha-1 P2O5 per year. Soil samples were taken 11 years after the establishment of the experiment and analyzed for soil total organic carbon and carbon content of humic fractions at 0.00-0.05, 0.05-0.10, and 0.10-0.20-m depths. The humic fractions are sensitive to soil management, except free fulvic acid, which was the only one that did not reduce its carbon contents on the surface layer...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Humic fractions; No-tillage; Organic matter fractions; Phosphate fertilization; Soil fertility; Soil quality.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901668

Selecting soil quality indicators for different soil management systems in the Brazilian Cerrado
Provedor de dados: 86
Autores: Stefanoski,Diane Cristina; Figueiredo,Cícero Célio de; Santos,Glenio Guimarães; Marchão,Robélio Leandro.
Abstract The objective of this work was to assess soil quality indicators obtained with different datasets to compare soil management systems in the Brazilian Cerrado. Three criteria were used to select soil physical, chemical, and biological indicators: the full set of indicators obtained, with 36 parameters, for which all the physical, chemical, and biological soil properties were determined; a subset of indicators selected by principal component analysis (20 parameters); and a subset of indicators with some frequency of use in the literature (16 parameters). These indicators were obtained from the following management systems: no-tillage, conventional tillage, and native cerrado vegetation. Soil samples were collected at 0.0-0.1-m soil depth, and soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Principal component analysis; Soil functioning; Soil health; Soil management; Soil security.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901643

Production of annual winter forage sown before and after soybean harvest under different nitrogen fertilization levels
Provedor de dados: 86
Autores: Migliorini,Francisco; Soares,André Brugnara; Sartor,Laércio Ricardo; Adami,Paulo Fernando; Pattis,Carlos Alberto; Migliorini,Patrícia.
The objective of this work was to evaluate the effect on forage yield of sowing winter forage species before and after soybean harvest, at different nitrogen application levels. The experiment was set out in a randomized block design with a strip-split plot arrangement, and three replicates. Sowing methods (18 days before soybean harvest and six days after soybean harvest) were allocated in the main plots, and the combination among forage species (Avena strigosa cv. IAPAR 61 + Lolium multiflorum; A. strigosa cv. Comum + L. multiflorum; A. strigosa cv. Comum + L. multiflorum + Vicia villosa; A. strigosa cv. Comum + L. multiflorum + Raphanus sativus; and L. multiflorum) and nitrogen levels (0, 140, 280 and 420 kg ha-1) in the plots and subplots,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crop-livestock system; Disking process; Feed gap; No-tillage; Sowing date.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010001000022

Carbon fractions and stock in response to solid and fluid organomineral fertilizers in highly fertile soils
Provedor de dados: 86
Autores: Corrêa,Juliano Corulli; Ródio,Lauri Caetano; Rigo,Amanda Zolet; Grohskopf,Marco André; Rebellatto,Agostinho; Mafra,Álvaro Luiz.
Abstract: The objective of this work was to evaluate the effect of the application of organomineral and mineral fertilizers to highly fertile soils on the carbon management index (CMI) and carbon fractions and stock. The experiment was carried out on an Oxisol and Inceptisol, under no-tillage, in three crop seasons. The treatments consisted of two organomineral fertilizers and of two mineral fertilizers in solid and fluid forms, besides a control without fertilization. The application of organomineral and mineral fertilizers, in solid and fluid forms, to the different soil classes with high fertility promoted changes in total organic carbon, particulate organic carbon, and carbon associated with minerals, as well as in carbon stocks and the CMI. In the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fluid fertilizer; No-tillage; Organomineral fertilizer.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000103802

Grain yield and termite damage in rice by compaction on the furrow and seed treatment
Provedor de dados: 86
Autores: Pinheiro,Veneraldo; Stone,Luís Fernando; Barrigossi,José Alexandre Freitas; Nascente,Adriano Stephan.
Abstract The objective of this work was to determine the effects of soil compaction pressure on the sowing furrow and of seed treatments with insecticides on grain yield and on termite damage in upland rice plants under no-tillage, in the Center West region of Brazil. Three experiments were carried out, consisting of five seed treatments combined with three (first experiment) or four (second and third experiments) compaction pressures in a randomized complete block design, in a factorial arrangement. The seed treatments were: T0, without treatment; T1, imidacloprid+thiodicarb; T2, thiamethoxam; T3, carbofuran; and T4, fipronil+pyraclostrobin+thiophanate-methyl. The compaction pressures applied were: 25, 42, and 268 kPa, in the first experiment; and these...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Compaction pressure; Insecticides; No-tillage.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016001101813

Intercepted solar radiation by maize crops subjected to different tillage systems and water availability levels
Provedor de dados: 86
Autores: Bergamaschi,Homero; Dalmago,Genei Antonio; Bergonci,João Ito; Krüger,Cleusa Adriane Menegassi Bianchi; Heckler,Bruna Maria Machado; Comiran,Flavia.
The objective of this work was to evaluate changes in the photosynthetic photon flux density (PPFD) interception efficiency and PPFD extinction coefficient for maize crop subjected to different soil tillage systems and water availability levels. Crops were subjected to no-tillage and conventional tillage systems combined with full irrigation and non-irrigation treatments. Continuous measurements of transmitted PPFD on the soil surface and incoming PPFD over the canopy were taken throughout the crop cycle. Leaf area index and soil water potential were also measured during the whole period. Considering a mean value over the maize cycle, intercepted PPFD was higher in the conventional tillage than in the no-tillage system. During the initial stages of plants,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Leaf area; No-tillage; Photosynthetic photon flux density; Water deficit.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010001200001

Biomass yield in production systems of soybean sown in succession to annual crops and cover crops
Provedor de dados: 86
Autores: Pacheco,Leandro Pereira; Miguel,Andressa Selestina Dalla Côrt São; Silva,Rayane Gabriel da; Souza,Edicarlos Damacena de; Petter,Fabiano André; Kappes,Claudinei.
Abstract: The objective of this work was to evaluate the biomass (leaves and stems) production of annual and cover crops sown as second crop, and its effects on soybean yield in succession. The experiment was carried out in the 2014/2015 and 2015/2016 crop seasons. Soybean was sown in the crop season and in the second crop, in a randomized complete block design, in nine production systems (treatments) consisting of annual crops (corn, sunflower, and cowpea) and cover crops (Pennisetum glaucum, Crotalaria breviflora, C. spectabilis, Urochloa ruziziensis, Cajanus cajan, Stylosanthes sp., and U. brizantha), which were grown in monocropping or intercropping systems, besides fallow as a control. Monocropped P. glaucum and U. ruziziensis showed a faster...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grain yield; No-tillage; Off-season.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000800582

Temperature changes in soil covered by black oat straw
Provedor de dados: 86
Autores: Zwirtes,Anderson Luiz; Reinert,Dalvan José; Gubiani,Paulo Ivonir; Silva,Vanderlei Rodrigues Da; Mulazzani,Rodrigo Pivoto; Somavilla,André.
Abstract: The objective of this work was to evaluate the effect of different amounts of black oat (Avena strigosa) straw covering soil surface on soil temperature at different depths. The treatments consisted of 0, 3, 6, and 9 Mg ha-1 straw. Soil temperature was measured hourly by a thermocouple inserted at different depths (0, 5, 15, 30, and 50 cm) and was used to adjust an equation correlating the temperature of covered soil with that of bare soil. With the correlations, it was possible to observe a point value of temperature (inversion temperature of straw effect), below which the presence of straw acts positively on the maintenance of soil temperature and above which the presence of straw acts negatively on soil heating.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena strigosa; Inversion temperature; Mulch effect; No-tillage; Plant residue; Soil thermal regime.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001101127

Soil fertility and agriculture yield with the application of organomineral or mineral fertilizers in solid and fluid forms
Provedor de dados: 86
Autores: Corrêa,Juliano Corulli; Rebellatto,Agostinho; Grohskopf,Marco André; Cassol,Paulo Cezar; Hentz,Paulo; Rigo,Amanda Zolet.
Abstract: The objective of this work was to evaluate the effects of organomineral and mineral fertilizers, in their solid and fluid forms, on soils with variable charges with high fertility built up from nitrogen, phosphorus, and potassium contents in the soil and plant, as well as on corn (Zea mays) and black oat (Avena strigosa) yield. The treatments consisted of one control and four fertilizers - two organomineral and two mineral - in solid (SO, solid organomineral; and SM, solid mineral) and fluid (FO, fluid organomineral; and FM, fluid mineral) forms applied in Rhodic Kandiudox and Distrochrept soils with no-tillage. The use of organomineral or mineral fertilizers in fluid and solid forms increases total N content in the soil, maintains exchangeable K...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena strigosa; Zea mays; Crop system fertilization; Liquid pig slurry; No-tillage; Poultry litters.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500633

Development of Sclerotium rolfsii sclerotia on soybean, corn, and wheat straw, under different soil temperatures and moisture contents
Provedor de dados: 86
Autores: Pinheiro,Victor dos Reis; Seixas,Claudine Dinali Santos; Godoy,Cláudia Vieira; Soares,Rafael Moreira; Oliveira,Maria Cristina Neves de; Almeida,Álvaro Manuel Rodrigues.
The objective of this work was to evaluate the effect of moisture and temperature on the development of Sclerotium rolfsii on soybean, corn, and wheat straw. Wheat straw produced the lowest number of sclerotia. Intermediate soil moisture level (70% of field capacity), and temperatures ranging between 25-30ºC favored sclerotia development. No sclerotia were formed at temperatures between 30-35ºC, on any type of straw.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Glycine max; Crop rotation; No-tillage; Sclerotium blight.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000300014

Phytosociology of Weeds in Off-Season Maize Crops in the Middle Paranapanema
Provedor de dados: 87
Autores: GAZOLA,T.; DIAS,M.F.; DUARTE,A.P.; CARBONARI,C.A.; VELINI,E.D.
ABSTRACT: This work is the first one after the consolidation of the introduction of the RR technology in maize and soybean crops, following weed surveys previously carried out in the region of the Middle Paranapanema, São Paulo state. The objective was to carry out a phytosociological survey of weeds in off-season maize crops no-tillage, in the same properties where the studies had been previously carried out, in the described region, taking into account the management of the weed community adopted by farmers, and the percentage of plant coveron the soil. The surveys were carried out in 19 farms conducted under no-tillage systems, with off-season maize cultivated in soybean succession, both RR crops, in nine municipalities of the São Paulo region of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Weeds; No-tillage; Zea mays.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100313

Early growth of common bean cropped over ruzigrass residues
Provedor de dados: 87
Autores: Souza,E.F.C.; Fernandes,A.M.; Souza-Schlick,G.D.; Rosolem,C.A.
Ruzigrass (Brachiaria ruziziensis, syn. Urochloa ruziziensis) is used as a cover crop in tropical regions because it has a high yield potential, is widely adapted and has a vigorous root system. However, it may affect early growth of the next crop due to allelopathy and competition for soil nitrate. A greenhouse experiment was conducted in glass-walled pots with soil to determine the effect of ruzigrass residues on the initial growth and mineral nutrition of common bean (Phaseolus vulgaris). Ruzigrass was grown in the pots for 50 days and chemically desiccated. Then, common bean was grown: without ruzigrass residues; with ruzigrass shoots placed on the soil surface; with ruzigrass roots left in the soil; and with ruzigrass shoots and roots left...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Urochloa ruziziensis; No-tillage; Allelopathy.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400012

Effects of Reduced and Conventional Tillage on Weed Communities: Results of a Long-Term Experiment in Southwestern Spain
Provedor de dados: 87
Autores: PARDO,G.; CIRUJEDA,A.; PEREA,F.; VERDÚ,A.M.C.; MAS,M.T.; URBANO,J.M.
ABSTRACT: An important drawback in adopting minimum tillage (MT) and no-tillage (NT) techniques is the frequently observed weed shift promoting adapted species and achieving poorer weed control. These changes can be detected best with long-term experiments, and results might differ depending on soil characteristics and the local flora. The objectives of this work were to evaluate the effect of reduced tillage on weed seed distribution in the soil profile and to identify possible consequences on weed diversity on a long-term experiment maintained during 24 years in Seville (Spain) with three tillage systems: NT, MT and conventional tillage (CT) including moldboard plow on a vertisol. For this purpose, soil seedbanks at 0-8 cm and 8-16 cm depths were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Minimum tillage; Moldboard plow; Mechanical weed control; Seedbank; Diversity indexes.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100164

Effects of No-Tillage Production Practices on Crop Yields as Influenced by Crop and Growing Environment Factors
Provedor de dados: 31
Autores: 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

An Economic Analysis of Carbon Sequestration for Wheat and Grain Sorghum Production in Kansas
Provedor de dados: 31
Autores: Aller,   Taryn D.; Williams,   Jeffery R.; Nelson,   Richard G.; Claassen,   Mark M.; Rice,   Charles W.
This study examined the economic potential with and without carbon credit payments of two crop and tillage systems in South Central Kansas that could reduce carbon dioxide emissions and sequester carbon in the soil. Experiment station cropping practices, yield data, and soil carbon data for continuously cropped wheat and grain sorghum produced with conventional tillage and no-tillage from1986 to 1995 were used to determine soil carbon changes and to develop enterprise budgets to determine expected net returns for a typical dryland farm in South Central Kansas. No-till had lower net returns because of lower yields and higher overall costs. Both crops produced under no-till had higher annual soil C gains than under conventional tillage. Carbon credit...
Tipo: Working or Discussion Paper
Palavras-chave: Carbon credit value; Carbon sequestration; Grain sorghum; No-tillage; Wheat; Crop Production/Industries.
Ano: 2001
URL: http://purl.umn.edu/117991

Comparative analysis of different tillage systems used in sugarcane (Thailand)
Provedor de dados: 31
Autores: Grange,   Ian; Prammanee,   P.; Prasertsak,   P.
In order to reduce the impact of decreasing profit margins in crop production systems, all possible options that will increase net profits need to be explored. Land preparation and stool removal in sugarcane production can be a major contributor to overall production costs. Since estimates that mechanization can contribute as much as 50% of the total production costs, considerable savings can potentially be made if the number of tillage operations is reduced. Such savings however, have to be offset against other costs associated with minimum or no-tillage systems, such as the increased need for herbicide. In addition, conventional tillage systems have been implicated in yield decline over the long-term and therefore yield benefits are envisaged, together...
Tipo: Article
Palavras-chave: Minimum tillage; No-tillage; Net profit; Profit margin; Sugarcane; Farm Management.
Ano: 2005
URL: http://purl.umn.edu/123140

Critical limits of soil penetration resistance in a rhodic Eutrudox
Provedor de dados: 90
Autores: Moraes,Moacir Tuzzin de; Debiasi,Henrique; Carlesso,Reimar; Franchini,Julio Cezar; Silva,Vanderlei Rodrigues da.
Soil penetration resistance is an important indicator of soil physical quality and the critical limit of 2 MPa has been widely used to characterize the soil physical quality, in both no-tillage and conventional systems. The aim of this study was to quantify the influence of different tillage and cropping systems on the soil penetration resistance in a Rhodic Eutrudox. The experiment was carried out in a 5 × 2 factorial, completely randomized block design (tillage systems vs cropping systems), with four replications. The tillage systems consisted of: conventional tillage disk harrow; minimum tillage with annual chiseling; minimum tillage with chiseling every three years; no-tillage for 11 consecutive years; and no-tillage for 24 consecutive years. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Soil chiseling; Level compaction.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100029

The effects of land use and soil management on the physical properties of an Oxisol in Southeast Brazil
Provedor de dados: 90
Autores: Seben Junior,Getulio de Freitas; Corá,José Eduardo; Lal,Rattan.
Soils of the tropics are prone to a decrease in quality after conversion from native forest (FO) to a conventional tillage system (CT). However, the adoption of no-tillage (NT) and complex crop rotations may improve soil structural quality. Thus, the aim of this study was to evaluate the physical properties of an Oxisol under FO, CT, and three summer crop sequences in NT: continuous corn (NTcc), continuous soybean (NTcs), and a soybean/corn rotation (NTscr). Both NT and CT decreased soil organic carbon (SOC) content, SOC stock, water stable aggregates (WSA), geometric mean diameter (GMD), soil total porosity (TP), macroporosity (MA), and the least limiting water range (LLWR). However they increased soil bulk density (BD) and tensile strength (TS) of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Soil organic carbon; Soil aggregate; Bulk density; Tropical soil; Cerrado.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000400021

Carbon stock and its compartments in a subtropical oxisol under long-term tillage and crop rotation systems
Provedor de dados: 90
Autores: 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

Efficiency of nitrogen fertilizer applied at corn sowing in contrasting growing seasons in Paraguay
Provedor de dados: 90
Autores: Amado,Telmo Jorge Carneiro; Hahn Villalba,Enrique Oswin; Bortolotto,Rafael Pivotto; Santi,Antônio Luis; Benítez León,Enrique Asterio; Menefee,Dorothy; Kunz,Junior.
In order to select soil management practices that increase the nitrogen-use efficiency (NUE) in agro-ecosystems, the different indices of agronomic fertilizer efficiency must be evaluated under varied weather conditions. This study assessed the NUE indices in no-till corn in southern Paraguay. Nitrogen fertilizer rates from 0 to 180 kg ha-1 were applied in a single application at corn sowing and the crop response investigated in two growing seasons (2010 and 2011). The experimental design was a randomized block with three replications. Based on the data of grain yield, dry matter, and N uptake, the following fertilizer indices were assessed: agronomic N-use efficiency (ANE), apparent N recovery efficiency (NRE), N physiological efficiency (NPE), partial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Plant nutrition; No-tillage; Soil fertility.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000600020

Effects of different management systems on porosity of oxisols in Paraná, Brazil
Provedor de dados: 90
Autores: 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

Physical properties of a humic cambisol under tillage and cropping systems after twelve years
Provedor de dados: 90
Autores: Andrade,Andréia Patrícia; Mafra,Álvaro Luiz; Baldo,Gizele Rejane; Piccolla,Cristiano Dela; Bertol,Ildegardis; Albuquerque,Jackson Adriano.
Soil is the basis underlying the food production chain and it is fundamental to improve and conserve its productive capacity. Imbalanced exploitation can degrade agricultural areas physical, chemical and biologically. The objective of this study was to evaluate some soil physical properties and their relation with organic carbon contents of a Humic Dystrudept under conventional tillage (CT) and no-tillage (NT), for 12 years in rotation (r) and succession (s) cropping systems. The experiment was carried out in Lages, SC (latitude 27 º 49 ' S and longitude 50 º 20 ' W, 937 m asl), using crop sequences of bean-fallow-maize-fallow-soybean in conventional tillage rotation; maize-fallow in conventional tillage succession; bean-oat-maize-turnip-soybean-vetch in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crop rotation; Crop succession; No-tillage; Soil management.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000100022

Collembola Community Structure as a Tool to Assess Land Use Effects on Soil Quality
Provedor de dados: 90
Autores: Filho,Luís Carlos Iuñes de Oliveira; Filho,Osmar Klauberg; Baretta,Dilmar; Tanaka,Cynthia Akemi Shinozaki; Sousa,José Paulo.
ABSTRACT: Collembolan species are differently affected by soil tillage (conventional, minimum tillage, and no-tillage) and are known to modify plant growth. This study relies on the relationships between Collembola community structures and land use systems as a proxy for characterizing changes in soil quality. Thus, Collembola community structure (eco-morphological groups - edaphic, hemiedaphic and epigeic, and morphotypes) were examined in a no-tillage system and crop-livestock integration system to evaluate the discriminative power of the Collembola community structure and to determine which soil properties drives structural diversity. Thirty-eight morphotypes of Collembola were recorded in this study, 11 belonging to the edaphic eco-morphological group,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil fauna; Morphotypes; No-tillage; Crop-livestock integration.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100429

Water Erosion in a Long-Term Soil Management Experiment with a Humic Cambisol
Provedor de dados: 90
Autores: Schick,Jefferson; Bertol,Ildegardis; Barbosa,Fabrício Tondello; Miquelluti,David José; Cogo,Neroli Pedro.
ABSTRACT Water erosion, the main factor in soil degradation, is strongly influenced by soil cover and management. The objective of this study was to determine soil and water losses under natural rainfall conditions from 1993 to 2012 in the southern Santa Catarina Plateau, Brazil, in 3.5 × 22.1 m plots with crops in rotation to study the following management treatments: conventional tillage (CT), minimum tillage (MT), and no-tillage (NT), and a treatment with bare soil (BS). The soil cover remaining after tillage was negatively affected by the increase in soil tillage intensity. Soil losses were strongly affected by the management system, while water losses were less affected. Soil losses were 85.29, 6.41, 2.00, and 0.82 Mg ha-1 yr-1 in the BS, CT, MT, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil and water losses; No-tillage; Minimum tillage; Conventional tillage.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100525

Tillage systems and nutrient sources affecting soil cover, temperature and moisture in a clayey oxisol under corn
Provedor de dados: 90
Autores: Veiga,Milton da; Reinert,Dalvan José; Reichert,José Miguel.
Tillage affects soil physical properties, e.g., porosity, and leads to different amounts of mulch on the soil surface. Consequently, tillage is related to the soil temperature and moisture regime. Soil cover, temperature and moisture were measured under corn (Zea mays) in the tenth year of five tillage systems (NT = no-tillage; CP = chisel plow and single secondary disking; CT = primary and double secondary disking; CTb = CT with crop residues burned; and CTr = CT with crop residues removed). The tillage systems were combined with five nutrient sources (C = control; MF = mineral fertilizer; PL = poultry litter; CS = cattle slurry; and SS = swine slurry). Soil cover after sowing was greatest in NT (88 %), medium in CP (38 %) and lowest in CT treatments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Conservation tillage; Conventional tillage; Manure.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000600025

Nitrous Oxide Emissions in a Wheat/Corn Succession Combining Dairy Slurry and Urea as Nitrogen Sources
Provedor de dados: 90
Autores: Aita,Celso; Tonetto,Felipe; Gonzatto,Rogerio; Pujol,Stefen Barbosa; Schirmann,Janquieli; Depoi,Juliano dos Santos; Mezzalira,Ana Paula; Hochscheid,Matheus; Zirbes,Emerson; Giacomini,Sandro José.
ABSTRACT: The impact on nitrous oxide (N2O) emissions caused by combining dairy slurry (DS) and urea to supply crops with nitrogen (N) is still not well characterized. The main objective of this study was to compare the differences between N2O emissions in the cases of exclusive use of urea and the combined use of DS and urea as N sources to no-tillage wheat and corn. We also compared N2O emissions between two DS application methods (surface-broadcast vs. injection), as well as the addition of dicyandiamide (DCD) to DS. The experiment was conducted under no-tillage and six treatments were applied at sowing as follows: no fertilization (control), surface-broadcast urea (urea-N), surface-broadcast DS (DSs), surface-broadcast DS with DCD (DSs + DCD),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dicyandiamide; DCD; Slurry injection in soil; No-tillage.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100517

Nitrogen application timing and soil inorganic nitrogen dynamics under no-till oat/maize sequential cropping
Provedor de dados: 90
Autores: Dieckow,Jeferson; Meurer,Egon José; Salet,Roberto Luiz.
The timing of N application to maize is a key factor to be considered in no-till oat/maize sequential cropping. This study aimed to evaluate the influence of pre-planting, planting and sidedress N application on oat residue decomposition, on soil N immobilisation and remineralisation and on N uptake by maize plants in no-till oat/maize sequential cropping. Undisturbed soil cores of 10 and 20 cm diameter were collected from the 0-15 cm layer of a no-till Red Latossol, when the oat cover crop was in the milk-grain stage. Two greenhouse experiments were conducted simultaneously. Experiment A, established in the 10 cm diameter cores and without plant cultivation, was used to asses N dynamics in soil and oat residues. Experiment B, established in the 20 cm...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: N immobilisation; Application timing; No-tillage; Oat residue; Maize.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832006000400011

Nitrogen dynamics in soil management systems: II - mineralization and nitrification rates
Provedor de dados: 90
Autores: Cardoso,Eduardo Garcia; Sá,João Carlos de Moraes; Briedis,Clever; Ferreira,Ademir de Oliveira; Borszowskei,Paulo Rogério; Santos,Josiane Burkner; Massinham,Aline; Ferreira,Carla Fernanda; Siuta Júnior,Darci; Baranek,Edemar José.
Nitrogen is the main limiting factor in crop productivity and thereby soil management systems may change the mineralization and nitrification rates. In an experiment on soil management systems implemented in 1988 at the experimental station Fundação ABC, Ponta Grossa, in the central South region of the State of Paraná, inorganic N dynamics were examined to find a soil management strategy with a view to a sustainable environment. The objective of this study was to calculate the net mineralization and nitrification rates of soil N and the correlation with soil pH under management systems. Randomized complete block design was used, in split plots, in three replications. The following soil management systems (SMSs) were adopted in the plots: 1) conventional...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation systems; No-tillage; Conventional tillage; Soil pH.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000500019

Chemical and physical-hydric characterisation of a red latosol after five years of management during the summer between-crop season
Provedor de dados: 90
Autores: Silva,José Fausto Guimarães; Severiano,Eduardo da Costa; Costa,Kátia Aparecida de Pinho; Benites,Vinícius de Melo; Guimarães Júnnyor,Wellingthon da Silva; Bento,José Carlos.
Agricultural production systems that include the production of mulch for no-tillage farming and structural improvement of the soil can be considered key measures for agricultural activity in the Cerrado region without causing environmental degradation. In this respect, our work aimed to evaluate the chemical and physical-hydric properties of a dystrophic Red Latosol (Oxisol) in the municipality of Rio Verde, Goias, Brazil, under different soil management systems in the between-crop season of soybean cultivation five years after first planting. The following conditions were evaluated: Brachiaria brizantha cv. Marandu as a cover crop during the between-crop season; Second crop of maize intercropped with Brachiaria ruziziensis; Second crop of grain alone in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria; Crop succession; No-tillage; Least limiting water range; Water availability.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500023

Is Structural Quality as Assessed by the "Profil Cultural" Method Related to Quantitative Indicators of Soil Physical Quality?
Provedor de dados: 90
Autores: Watanabe,Rafaela; Tormena,Cássio Antonio; Guimarães,Maria de Fátima; Tavares Filho,João; Ralisch,Ricardo; Franchini,Julio; Debiasi,Henrique.
ABSTRACT Soil and crop management systems change the soil structure, thereby affecting soil quality. The “profil cultural” method (PCM) has been used to identify the effects of management systems on soil structure; however, few studies relate the structures identified by the PCM to quantitative indicators of soil structural quality. This study aimed to quantify soil structures using the PCM and relate these structures to bulk density (Bd), critical bulk density (Bdc), soil aeration capacity (εa), least limiting water range (LLWR), and soil air permeability (Ka) under different soil and crop management systems. The study was developed in a long-term experiment (24 years) involving two systems of soil management (no-tillage and conventional tillage) and two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Least limiting water range; Air permeability; No-tillage; Conventional tillage.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100510

ORGANIC CARBON CONTENTS AND STOCKS IN PARTICLE SIZE FRACTIONS OF A TYPIC HAPLUDOX FERTILIZED WITH PIG SLURRY AND SOLUBLE FERTILIZER
Provedor de dados: 90
Autores: Mafra,Maria Sueli Heberle; Cassol,Paulo Cezar; Albuquerque,Jackson Adriano; Grohskopf,Marco André; Andrade,Andreia Patrícia; Rauber,Luiz Paulo; Friederichs,Augusto.
The use of pig slurry (PS) as fertilizer can affect the soil quality and increase total stocks of soil organic carbon (TOC). However, the effects of PS on TOC amount and forms in the soil are not fully understood, particularly in areas under no-tillage (NT). The purpose of this study was to determine TOC contents and stocks in the particulate (POC) and mineral-associated C fractions (MAC) of an Oxisol after nine years of maize-oat rotation under NT, with annual applications of PS, soluble fertilizer and combined fertilization (pig slurry + soluble fertilizer). The experiment was initiated in 2001 in Campos Novos, Santa Catarina, with the following treatments: PS at rates of 0 (without fertilization - PS0); 25 (PS25); 50 (PS50); 100 (PS100); and 200 m3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manure; Swine slurry; Carbon fixation; Soil organic matter; No-tillage.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000401161

Physical Properties of a Hapludox after Three Decades under Different Soil Management Systems
Provedor de dados: 90
Autores: Silva,Franciani Rodrigues da; Albuquerque,Jackson Adriano; Costa,André da; Fontoura,Sandra Mara Vieira; and,Cimélio Bayer; Warmling,Maria Izabel.
ABSTRACT Changes in soil physical properties due to different management systems occur slowly, and long-term studies are needed to assess soil quality. The objectives of this study were to evaluate the effects of soil management systems and liming methods on the physical properties of a Latossolo Bruno Alumínico típico (Hapludox). A long-term experiment that began in 1978 with conventional and no-tillage systems was assessed. In addition, different liming methods (no lime, incorporated lime, and lime on the soil surface) have been applied since 1987 and were also evaluated in this study. Moreover, an area of native forest was evaluated and considered a reference for the natural condition of the soil. Soil physical properties were evaluated in layers to a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Conventional tillage; Soil structure; Long term.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100501

Spatial and linear correlations between soil and corn
Provedor de dados: 90
Autores: Chioderoli,Carlos Alessandro; Mello,Luiz Malcom Mano de; Noronha,Rafael Henrique de Freitas; Pariz,Cristiano Magalhães; Lima,Ronaldo Cintra.
The Technologies setting at Agricultural production system have the main characteristics the vertical productivity, reduced costs, soil physical, chemical and biological improvement to promote production sustainable growth. Thus, the study aimed to determine the variability and the linear and special correlations between the plant and soil attributes in order to select and indicate good representation of soil physical quality for forage productivity. In the growing season of 2006, on the Fazenda Bonança in Pereira Barreto (SP), the productivity of autumn corn forage (FDM) in an irrigated no-tillage system and the soil physical properties were analyzed. The purpose was to study the variability and the linear and spatial correlations between the plant and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil physical properties; Soil management; Geostatistics; No-tillage; Forage crops.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000300008

Distribution and vertical stratification of carbon and nitrogen in soil under different managements in the pampean region of Argentina
Provedor de dados: 90
Autores: Álvarez,Carina Rosa; Costantini,Alejandro Oscar; Bono,Alfredo; Taboada,Miguel Ángel; Boem,Flavio Hernán Gutiérrez; Fernández,Patricia Lilia; Prystupa,Pablo.
One of the expected benefits of no-tillage systems is a higher rate of soil C sequestration. However, higher C retention in soil is not always apparent when no-tillage is applied, due e.g., to substantial differences in soil type and initial C content. The main purpose of this study was to evaluate the potential of no-tillage management to increase the stock of total organic C in soils of the Pampas region in Argentina. Forty crop fields under no-tillage and conventional tillage systems and seven undisturbed soils were sampled. Total organic C, total N, their fractions and stratification ratios and the C storage capacity of the soils under different managements were assessed in samples to a depth of 30 cm, in three layers (0-5, 5-15 and 15-30 cm). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Soil organic matter fractions; Tillage systems; Carbon stratification; C and N stocks.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000600015

Visual Evaluation of the Soil Structure under Different Management Systems in Lowlands in Southern Brazil
Provedor de dados: 90
Autores: Tuchtenhagen,Ivana Kruger; Lima,Cláudia Liane Rodrigues de; Bamberg,Adilson Luís; Guimarães,Rachel Muylaert Locks; Mansonia,Pulido-Moncada.
ABSTRACT The “Visual Evaluation of Soil Structure” (VESS) is a method used primarily to evaluate the soil structural quality of Oxisols in Brazil and secondly for more specific research, consultancy, and teaching purposes. Since the methodology was never applied and compared with laboratory evaluations of physical properties of hydromorphic soils of the Pampa biome in the south of Brazil, this study evaluated the use of VESS as a visual indicator of the structure quality of a typic eutrophic Albaqualf soil under native grassland, crop-livestock integration, no-tillage, and conventional management systems. Experimental areas with these different management systems were subjected to visual (VESS) and laboratory evaluation of the soil structure. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil degradation; Bulk density; Tensile strength; No-tillage; Conventional tillage.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100412

SOIL FUNGISTASIS AGAINST FUSARIUM GRAMINEARUM UNDER DIFFERENT CROP MANAGEMENT SYSTEMS
Provedor de dados: 90
Autores: Lisboa,Bruno Brito; Bayer,Cimélio; Passaglia,Luciane Maria Pereira; Camargo,Flávio Anastácio de Oliveira; Beneduzi,Anelise; Ambrosini,Adriana; Vargas,Luciano Kayser.
Soil management, in terms of tillage and cropping systems, strongly influences the biological properties of soil involved in the suppression of plant diseases. Fungistasis mediated by soil microbiota is an important component of disease-suppressive soils. We evaluated the influence of different management systems on fungistasis against Fusarium graminearum, the relationship of fungistasis to the bacterial profile of the soil, and the possible mechanisms involved in this process. Samples were taken from a long-term experiment set up in a Paleudult soil under conventional tillage or no-tillage management and three cropping systems: black oat (Avena strigose L.) + vetch (Vicia sativa L.)/maize (Zea mays L.) + cowpea (Vigna sinensis L.), black oat/maize, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crop systems; Fungistasis; No-tillage; Plant diseases.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100069

Impacts of different management systems on the physical quality of an Amazonian Oxisol
Provedor de dados: 90
Autores: Guedes,Elaine Maria Silva; Fernandes,Antonio Rodrigues; Lima,Herdjania Veras de; Serra,Ademar Pereira; Costa,José Ribamar; Guedes,Rafael da Silva.
The physical quality of Amazonian soils is relatively unexplored, due to the unique characteristics of these soils. The index of soil physical quality is a widely accepted measure of the structural quality of soils and has been used to specify the structural quality of some tropical soils, as for example of the Cerrado ecoregion of Brazil. The research objective was to evaluate the physical quality index of an Amazonian dystrophic Oxisol under different management systems. Soils under five managements were sampled in Paragominas, State of Pará: 1) a 20-year-old second-growth forest (Forest); 2) Brachiaria sp pasture; 3) four years of no-tillage (NT4.); 4) eight years of no-tillage (NT8); and 5) two years of conventional tillage (CT2). The soil samples were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conventional tillage; No-tillage; S Index.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400021

Labile and stable fractions of soil organic matter under management systems and native cerrado
Provedor de dados: 90
Autores: Figueiredo,Cícero Célio de; Resck,Dimas Vital Siqueira; Carneiro,Marco Aurélio Carbone.
Soil organic matter can be analyzed on the basis of the different fractions. Changes in the levels of organic matter, caused by land use, can be better understood by alterations in the different compartments. The aim of this study was to evaluate the effect of different management systems on the labile and stable organic matter of a dystrophic Red Latosol (Oxisol). The following properties were determined: total organic C and total N (TOC and TN), particulate organic C and particulate N (POC and PN), organic C and N mineral-associated (MOC and NM) and particulate organic C associated with aggregate classes (POCA). Eight treatments were used: seven with soil management systems and one with native Cerrado as a reference. The experiment was designed to study...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fractioning; Particulate organic carbon; Aggregates; No-tillage; Pasture.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300032

Effects of Soil Management Practices on Water Erosion under Natural Rainfall Conditions on a Humic Dystrudept
Provedor de dados: 90
Autores: Souza,Vinicius Ferreira Chaves de; Bertol,Ildegardis; Wolschick,Neuro Hilton.
ABSTRACT Water erosion is the main cause of soil degradation and is influenced by rainfall, soil, topography, land use, soil cover and management, and conservation practices. The objective of this study was to quantify water erosion in a Humic Dystrudept in two experiments. In experiment I, treatments consisted of different rates of fertilizer applied to the soil surface under no-tillage conditions. In experiment II, treatments consisted of a no-tillage in natural rangeland, burned natural rangeland and natural rangeland. Forage turnip, black beans, common vetch, and corn were used in rotation in the treatments with crops in the no-tillage during study period. The treatments with crops and the burned rangeland and natural rangeland were compared to a bare...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water and soil losses; Natural rangeland; Burned natural rangeland; No-tillage.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100513

Carbon Stocks in Compartments of Soil Organic Matter 31 Years after Substitution of Native Cerrado Vegetation by Agroecosystems
Provedor de dados: 90
Autores: 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

Influence of physical attributes and pedotransfer function for predicting water retention in management systems
Provedor de dados: 91
Autores: Auler,André C.; Pires,Luiz F.; Pineda,Maria C.
ABSTRACT The aims of this study were to evaluate the effects of the soil structural physical attributes on the water retention and to develop pedotransfer functions (PTFs) for the estimation of the soil water content (θ) at different matric potentials of a Dystrophic Red Latosol (Hapludox) under conventional tillage (CT) and no-tillage (NT) soil management systems. The effects of long-term CT and NT (over 25 years) management on the soil bulk density (BD), total porosity (TP), macroporosity (Ma), microporosity (Mi) and water retention were investigated. The PTFs were developed to predict θ and used to evaluate the soil water retention curve only for the NT system. The NT system was characterized by smaller values of the soil BD and higher values of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Conventional tillage; Soil porosity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001100746

Water use of cowpea under deficit irrigation and cultivation systems in semi-arid region
Provedor de dados: 91
Autores: Freitas,Rômulo M. O. de; Dombroski,Jeferson L. D.; Freitas,Francisco C. L. de; Nogueira,Narjara W.; Leite,Tiago S.; Praxedes,Sidney C.
ABSTRACT The resilience of crops to drought depends heavily on the cultural practices adopted, which can have a direct effect on water use efficiency. The aim of this study was to assess the influence of irrigation intervals on the growth, water consumption and water use efficiency of cowpea crops (cv. BRS Guariba) under conventional and no-tillage systems. The experiment was carried out in the semi-arid region of Rio Grande do Norte, Brazil, using a split-plot in a randomised complete block design, with four replications. Treatments consisted of two cultivation systems in the whole plots (conventional and no-tillage) and six irrigation intervals in the subplots (2, 6, 10, 14, 18 and 22 days) which were applied at full bloom. The biomass of the different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vigna unguiculata; No-tillage; Mulch; Water deficit.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000400271

Rice grain yield as affected by subsoiling, compaction on sowing furrow and seed treatment
Provedor de dados: 91
Autores: Pinheiro,Veneraldo; Stone,Luís F.; Barrigossi,José A. F.
ABSTRACT This study aimed to determine the effects of subsoiling, compaction on sowing furrow and seed treatments with insecticides on the grain yield of upland rice cultivated under no-tillage. Two experiments were carried out, one in an area with and the other in an area without subsoiling, in which five seed treatments combined with five compaction pressures on the sowing furrow were compared in a randomized block design, in a factorial scheme, with three replicates. The seed treatments were: T0 - without treatment, T1 - imidacloprid + thiodicarb, T2 - thiamethoxam, T3 - carbofuran, and T4 - fipronil + pyraclostrobin + thiophanate methyl. The compaction pressures were: 25, 42, 126, 268 and 366 kPa. Subsoiling positively affected rice yield in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa L; No-tillage; Compaction pressure; Térmite.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000500395

Oxidizable carbon fractions in Red Latosol under different management systems
Provedor de dados: 124
Autores: Guareschi,Roni Fernandes; Pereira,Marcos Gervasio; Perin,Adriano.
The aim of this study was to evaluate the oxidizable fractions of organic C in a Red Latosol in an area of cerrado under a no-tillage system (NT) with different years of implantation, and to compare them to areas of native cerrado and pasture. The experimental design used was completely randomized with five replications. Treatments consisted of five areas: native cerrado (NC) "stricto sensu"; pasture (PA) planted with Brachiaria decumbens; NT with 3 (NT3); NT with 15 (NT15) and NT with 20 (NT20) years of implantation. There was an increase in the ground-surface mass of vegetable residue as a function of the time of implantation of the NT. An increase in C content and the carbon-management index (CMI) can be seen as a function of the time of implantation of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Grassland; Soil organic matter; Labile carbon.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000200005

Chiseling and gypsum application affecting soil physical attributes, root growth and soybean yield
Provedor de dados: 124
Autores: Santos,Esmael Lopes dos; Debiasi,Henrique; Franchini,Julio Cezar; Vieira,Marcos José; Balbinot Junior,Alvadi Antonio.
ABSTRACT This study aimed to evaluate the effect of chiseling and gypsum application on soil physical properties, soybean root growth and grain yield. An experiment was carried out in Londrina, Paraná state, Brazil, under a randomized complete block design, with six replications. The soil in the experimental area is classified as a dystroferric Red Latosol (Oxisol), containing 720 g kg-1 of clay. The experiment comprised four treatments: (1) continuous no-tillage (CNT) system without gypsum application, (2) CNT with gypsum application at 3.5 Mg ha-1, (3) chiseled soil without gypsum, and (4) chiseled soil with gypsum application. Regardless of gypsum application, chiseling increased water infiltration rate in soil and reduced penetration resistance. Gypsum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Soil penetration resistance; Infiltration rate; Soil compaction.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000400536

Production, decomposition of residues and yield of maize and soybeans grown on cover crops
Provedor de dados: 124
Autores: Torres,José Luiz Rodrigues; Pereira,Marcos Gervasio; Rodrigues Junior,Dilson José; Loss,Arcângelo.
ABSTRACTThe residues of cover plants and crops left on the soil surface can influence decomposition, nutrient cycling and follow crop yield. The objective was to evaluate the production of dry biomass (BD), of residues decomposition rate and yield of maize and soybean grown on different soil covers. The experimental design was a randomized block scheme banded, with four covers: Brachiaria, sun hemp, pearl millet and fallow period in autumn/winter, with maize and soybean crop in the spring/summer. We evaluated BD, decomposition through bags of decomposition and yield of maize and soybeans. Pearl millet and sunhemp were the covers which produced more of BD in the fall/winter period. the rate of decomposition of plant residues in maize and soybeans is slow in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intercropping; No-tillage; Productivity; Cerrado.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000300451

Soil fauna and its relation with environmental variables in soil management systems
Provedor de dados: 124
Autores: Baretta,Dilmar; Bartz,Marie Luise Carolina; Fachini,Ivandro; Anselmi,Rafael; Zortéa,Talyta; Baretta,Carolina Riviera Duarte Maluche.
The present study aims to generate knowledge about the soil fauna, its relation to other explanatory environmental variables, and, besides it, to select edaphic indicators that more contribute to separate the land use systems (LUS). Five different LUS were chosen: conventional tillage with crop rotation (CTCR); no-tillage with crop rotation (NTCR); conventional tillage with crop succession (CTCS); no-tillage with crop succession (NTCS) and minimum tillage with crop succession (MTCS). The samples were made in the counties Chapecó, Xanxerê and Ouro Verde located in the state of Santa Catarina, Brazil, and were considered the true replicates of the LUS. In each site, nine points were sampled in a sampling grid of 3 x 3. At the same points, soil was sampled...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sustainability; Soil quality indicators; No-tillage; Conventional tillage.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500002

Soil physico-hydrical properties resulting from the management in Integrated Production Systems
Provedor de dados: 124
Autores: Auler,André Carlos; Miara,Simone; Pires,Luiz Fernando; Fonseca,Adriel Ferreira da; Barth,Gabriel.
Anthropic action, such as the soil use and management systems, promote changes in the soil structure. These changes might hamper the development of plants in soil management practices that involve its mobilization, and the negative effects might be increased due to intensive use. The aim of this study was to evaluate the physico-hydrical properties of a Haplohumox in integrated production systems under different soil managements. The soil superficial (0.0-0.10 m) and sub-superficial (0.10-0.20 m) layers were evaluated in the different systems: conventional tillage (CT), minimum tillage (MT), no-tillage (NT) and chiseled no-tillage (CNT), taking into consideration the annual ryegrass cropped for different uses [cover crop (C), grazing (G) and silage (S)]...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Haplohumox; No-tillage; Soil physical quality; Crop-livestock integration; Agriculture sustainability.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500013

Weed dynamics in grain sorghum-grass intercropped systems
Provedor de dados: 124
Autores: Sodré Filho,Joilson; Marchão,Robélio Leandro; Carvalho,Arminda Moreira de; Carmona,Ricardo.
The aim of this study was to assess the influence of short-season sorghum-grass intercropped systems on weed population dynamics. The integrated systems consisted of sorghum grown at two row spacings (0.50 m and 0.70 m), intercropped with palisade grass or Congo grass. We also used sole crops of sorghum, palisade grass, Congo grass and a fallow to serve as a reference for spontaneous vegetation. The experiment was conducted in 2010 and 2011 at Planaltina (Federal District) in Brazil. Weed populations and weed dry matter were assessed during the short season and during the succession soybean cycle. The weed soil seed bank was sampled in both years of the study. Sorghum at a row spacing of 0.50 m intercropped with Congo grass reduced the Ageratum conyzoides...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Urochloa brizantha; Urochloa ruziziensis; Soil seed bank; No-tillage; Integrated crop-livestock system.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500019

Carbon stock and humification index of organic matter affected by sugarcane straw and soil management
Provedor de dados: 63
Autores: Segnini,Aline; Carvalho,João Luís Nunes; Bolonhezi,Denizart; Milori,Débora Marcondes Bastos Pereira; Silva,Wilson Tadeu Lopes da; Simões,Marcelo Luiz; Cantarella,Heitor; Maria,Isabella C. de; Martin-Neto,Ladislau.
The maintenance of sugarcane (Saccharum spp.) straw on a soil surface increases the soil carbon (C) stocks, but at lower rates than expected. This fact is probably associated with the soil management adopted during sugarcane replanting. This study aimed to assess the impact on soil C stocks and the humification index of soil organic matter (SOM) of adopting no-tillage (NT) and conventional tillage (CT) for sugarcane replanting. A greater C content and stock was observed in the NT area, but only in the 0-5 cm soil layer (p &lt; 0.05). Greater soil C stock (0-60 cm) was found in soil under NT, when compared to CT and the baseline. While C stock of 116 Mg ha-1 was found in the baseline area, in areas under CT and NT systems the values ranged from 120 to 127...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laser-Induced Fluorescence Spectroscopy; Sugarcane replanting; Crop residues; No-tillage; Soil organic matter.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000500006

Nitrogen fertilization and soil management of winter common bean crop
Provedor de dados: 63
Autores: Silva,Matheus Gustavo da; Arf,Orivaldo; Sá,Marco Eustáquio de; Rodrigues,Ricardo Antônio Ferreira; Buzetti,Salatiér.
The adoption of appropriate cultural management, which includes nitrogen fertilization and soil tillage system, is very important to increase the efficiency of plant in the utilization of available resource. This research work was conducted for three years aiming at evaluating the effect of sidedressing nitrogen application (0, 25, 50, 75, and 100 kg ha-1) on winter bean crop under different systems of soil management (conventional, minimal, and no-tillage systems). The experimental design was a randomized block arranged in strips relative to tillage systems, with random distribution of nitrogen doses into each strip, with four replications. Grain yield was affected by nitrogen rates and significant increases were obtained with the application of 75 to 100...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris L.; Moldboard plow; Disk harrow; Nitrogen rates; No-tillage.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300012

Atrazine degradation patterns: the role of straw cover and herbicide application history
Provedor de dados: 63
Autores: Leal,Daniela Piaz Barbosa; Dick,Deborah Pinheiro; Stahl,Anna Meike; Köppchen,Stephan; Burauel,Peter.
ABSTRACT: In Brazil, atrazine (ATZ) is widely applied to maize (Zea mays L.) fields for weed control. The presence of ATZ and its metabolites in soil and water matrices has become a matter of some concern for governmental authorities as well as for society at large. This study evaluated the patterns of ATZ degradation (mineralization, extractable and non-extractable ATZ residues, and metabolite formation) in a Brazilian Typic Paleudult. Soil samples from a cultivated area under a no-tillage system with a history of ATZ application were incubated with 14C-ATZ in both the presence and absence of straw cover on the soil surface, and the evolved 14CO2 was determined by liquid scintillation. Samples from an area with native vegetation, adjacent to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atrazine mineralization; Sorption; Metabolites; No-tillage.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019000100063

Soil mesofauna in consolidated land use systems: how management affects soil and litter invertebrates
Provedor de dados: 63
Autores: Zagatto,Maurício Rumenos Guidetti; Zanão Júnior,Luiz Antônio; Pereira,Arthur Prudêncio de Araújo; Estrada-Bonilla,German; Cardoso,Elke Jurandy Bran Nogueira.
ABSTRACT: Soil mesofauna consists of small invertebrates that live in the soil or litter and are sensitive to climatic conditions, management systems, plant cover and physical or chemical soil attributes. These organisms are active in the cycling of nutrients, since they fragment the organic matter hereby accelerating microbial decomposition. The aim of this study was to evaluate the invertebrate community in no-tillage, conventional tillage, minimum tillage and secondary forest in regeneration to determine the relationship of mesofauna to litter, soil attributes, management and seasonality. Therefore, ten soil samples in each system and eight litter samples in no-tillage and the forest were taken over four seasons. These samples remained in Berlese...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; No-tillage; Multivariate analysis; Fauna density; Mites.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001200165

Quantification of the soil physical quality of a tropical oxisol using the S index
Provedor de dados: 63
Autores: Tormena,Cássio Antonio; Silva,Álvaro Pires da; Imhoff,Silvia Del Carmen; Dexter,Anthony Roger.
Soil physical quality is fundamental for the sustainability of agro ecosystems. Soil physical quality assessment must be developed using parameters that describe physical behavior. S, a new soil physical parameter has recently been introduced for assessing the soil physical quality. A good soil physical quality has been associated with values of S &gt; 0.035 in soils from temperate climates. However, S has not been evaluated in tropical soils yet. Therefore we tested the hypothesis that S is a reliable soil physical quality indicator of a Typic Hapludox cropped with maize under no-tillage (NT) and conventional tillage (CT). Undisturbed samples were collected from each tillage system in the row and interrow positions. Soil bulk density was determined in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bulk density; Tropical soils; No-tillage; Soil water retention; Soil structure.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000100008

Buttonweed emergence as affected by seed burial depth and straw on the soil surface
Provedor de dados: 63
Autores: Martins,Bianca Assis Barbosa; Christoffoleti,Pedro Jacob.
Knowledge of the effects of seed burial depth and the presence of straw on the soil surface on weed seedling emergence provides useful information for the development of weed management tactics. Buttonweed (Borreria densiflora DC.) is a troublesome weed that occurs in large infestations in soybean and sugarcane crops from north-central Brazil. This study investigated buttonweed emergence at different seed burial depths and straw amounts present on the soil surface. The experiment was conducted in greenhouse conditions, under a factorial design between four seed burial depths and four amounts of surface straw. Percent seedling emergence and fresh biomass (g) were evaluated at twenty-five days after installation (DAI). Greater buttonweed emergence occurred...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vassourinha-de-botão; Weed seedbank; No-tillage; Weed culture control.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000600489

Conversion of cerrado into agricultural land in the south-western Amazon: carbon stocks and soil fertility
Provedor de dados: 63
Autores: 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

Seasonality of soil water exchange in the soybean growing season in southern Brazil
Provedor de dados: 63
Autores: Moreira,Virnei Silva; Roberti,Débora R.; Minella,Jean Paolo; Gonçalves,Luis Gustavo G de; Candido,Luiz Antônio; Fiorin,Jackson E.; Moraes,Osvaldo L. L.; Timm,Andréa U.; Carlesso,Reimar; Degrazia,Gervásio Annes.
The processes of water transfer in the soil-plant-atmosphere system are strongly affected by soil use and management. Differences in the dynamics of soil water transfer between no-tillage (NT) and conventional tillage (CT) practices during a soybean (Glycine max) growing season in southern Brazil were assessed in this study. All the water balance components were analyzed during the soybean growing season (2009/2010). Rainfall, runoff, soil water storage and hydro-physical soil properties were analyzed under two tillage systems. The land-atmosphere water vapor exchanges, obtained from eddy covariance stations, were analyzed with regard to the soybean agroecosystem. Characterizations of soil water storage were also formulated in the 2006/2007 and 2008/2009...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water balance; Soil water content; Evapotranspiration; No-tillage; Conventional tillage.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000200103

Tillage, fertilization systems and chemical attributes of a Paleudult
Provedor de dados: 63
Autores: Dorneles,Evelyn Penedo; Lisboa,Bruno Brito; Abichequer,André Dabdab; Bissani,Carlos Alberto; Meurer,Egon José; Vargas,Luciano Kayser.
Tillage and fertilization methods may affect soil fertility. With the aim of assessing changes in soil chemical properties over a period of ten years, soil samples of a Paleudult were collected over nine seasons at three layer depths (0-5, 5-10, 10-20 cm) and were chemically analyzed. Grain yield and nutrient export in two summer crops, soybean (Glycine max) and corn (Zea mays), in a field experiment set in Eldorado do Sul, in the state of Rio Grande do Sul, Brazil, were determined. Three soil tillage systems were evaluated, conventional (CT), reduced (RT) and no-tillage (NT), combined with mineral (lime and fertilizers) and organic (poultry litter) fertilization. The no-tillage system stood out as compared to the others, especially in the surface layer,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil fertility; Conventional tillage; No-tillage; Organic matter; Cation exchange capacity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000200175

Tensile strength, friability and organic carbon in an oxisol under a crop-livestock system
Provedor de dados: 63
Autores: Guimarães,Rachel Muylaert Locks; Tormena,Cássio Antonio; Alves,Sérgio José; Fidalski,Jonez; Blainski,Éverton.
The crop-livestock system can promote soil compaction in surface layers, mainly due to animal trampling. However, plants and their root growth, in interaction with animal trampling, can decrease the deleterious changes in soil structure caused by this system. Up to the present time, the physical soil modifications in crop-livestock systems, including oat and ryegrass crops for winter animal forages are unknown. The objective of this study was to quantify and to relate tensile strength, friability and soil organic carbon in an Oxisol under a crop-livestock system. The study was conducted in Campo Mourão - Paraná, Brazil. Four forage heights were used for the winter forages: 7, 14, 21 and 28 cm. For each forage height, five soil blocks were randomly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggregate; Soil structure; No-tillage; Soil physical quality; Microstructure.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000400011

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
Provedor de dados: 104
Autores: 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

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
Provedor de dados: 104
Autores: 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

Efeito de sistemas de manejo sobre a velocidade de dessecação, infestação inicial de plantas daninhas e desenvolvimento e produtividade da soja - DOI: 10.4025/actasciagron.v30i4.5297
Provedor de dados: 1
Autores: Jaremtchuk, Carla Cristina; UEM; Constantin, Jamil; UEM; Oliveira Júnior, Rubem Silvério de; UEM; Biffe, Denis Fernando; UEM; Alonso, Diego Gonçalves; UEM; Arantes, João Guilherme Zanetti de; UEM.
No sistema de semeadura direta, a dessecação que antecede à semeadura (manejo) é uma das operações mais importantes para maximizar o crescimento inicial das culturas e minimizar a interferência das plantas daninhas no início do ciclo. O objetivo do trabalho foi avaliar o efeito de diferentes sistemas de manejo que antecede à semeadura da soja, no município de Iguaraçu, Paraná, no ano agrícola de 2004/2005. Foram comparados cinco épocas de manejo (10, 7, 5, 3 e o dias, antes da semeadura), com três tratamentos herbicidas (glyphosate 1080 g, glyphosate + flumioxazin 1080 + 25 g ha-1 e glyphosate + flumioxazin 1080 + 40 g ha-1), em relação à velocidade de dessecação, infestação inicial de plantas daninhas e desenvolvimento e produtividade da soja. A...
Palavras-chave: 5.01.02.00-1    Fitossanidade associação de herbicidas; Manejo; Soja; Semeadura direta. herbicide association; Burndown; Soybean; No-tillage.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5297

Efeito do adubo verde e época de semeadura sobre a produtividade do feijão, em plantio direto em região de cerrado - DOI: 10.4025/actasciagron.v32i2.2061
Provedor de dados: 1
Autores: Simidu, Helena Masumi; Unesp Ilha Solteira; Sá, Marco Eustáquio de; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Souza, Lilian Christian Domingues de; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Abrantes, Fabiana de Lima; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Silva, Mariana Pina da; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Arf, Orivaldo; Universidade Estadual Paulista “Júlio de Mesquita Filho”.
A adubação verde e a época de semeadura são dois importantes fatores que influenciam a produtividade das cultivares. O objetivo deste trabalho foi avaliar a produção de biomassa de diferentes coberturas vegetais (milheto, sorgo e Brachiaria brizantha), o acúmulo de nutrientes e seus efeitos sobre as cultivares de feijão (Pérola, IAC Tunã e Carioca Precoce) em distintas épocas de semeadura (22/6 e 6/7). O experimento foi realizado na área experimental da Universidade Estadual Paulista – Unesp, localizada no município de Selvíria, Estado do Mato Grosso do Sul, no ano agrícola de 2006/2007. Utilizou-se o delineamento experimental em blocos casualizados, com quatro repetições, e as avaliações para a cobertura foram: a biomassa de matéria fresca e seca e os...
Tipo: Pequisa Empírica de Campo
Palavras-chave: 5.01.03.00-8 adubação verde; Plantio direto; Épocas de plantio; Cultivares de feijão Fitotecnia green fertilizer; No-tillage; Planting times; Bean cultivars.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/2061

Alterações microbiológicas, de fertilidade e de produtividade do arroz de terras altas em diferentes manejos de solo e água - DOI: 10.4025/actasciagron.v30i2.1788
Provedor de dados: 1
Autores: Santos, Talles Eduardo Borges dos; UNESP, Ilha Solteira; Nakayama, Fernando Takayuki; UNESP, Ilha Solteira; Arf, Orivaldo; UNESP, Ilha Solteira; Cassiolato, Ana Maria Rodrigues; UNESP, Ilha Solteira.
O sistema de cultivo de arroz predominante no Brasil, o de terras altas, fica na dependência da precipitação pluvial e de sua distribuição. Determinadas práticas ou distúrbios, que atuam sobre o solo, levam a alterações que os microrganismos, por ser sensíveis, podem detectar. O trabalho objetivou estudar as alterações microbiológicas (carbono da biomassa microbiana (CBM)) e do CO2 (C-CO2) liberado, do quociente metabólico (qCO2) e micorrização), fertilidade do solo e produtividade do arroz de terras altas, cultivado sob diferentes manejos de solo e água. A cultivar utilizada foi a BRS Talento, e o delineamento experimental foi o de blocos casualizados, com quatro repetições. Os tratamentos foram arranjados em fatorial de três manejos de solo: plantio...
Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal atividade microbiana; Plantio direto; Cultivo mínimo; Fungos micorrízicos arbusculares; Irrigação 5.01.03.05-9 Melhoramento Vegetal microbial activity; No-tillage; Minimum tillage; Arbuscular mycorrhizal fungi; Irrigation.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1788

Soil carbon accumulation in cotton production systems in the Brazilian Cerrado
Provedor de dados: 1
Autores: Ferreira, Alexandre Cunha de Barcellos; Borin, Ana Luiza Dias Coelho; Lamas, Fernando Mendes; Bogiani, Julio Cesar; Silva, Mellissa Ananias Soler da; Silva Filho, Joao Luis da; Staut, Luiz Alberto.
Sustainable production systems, such as the no-tillage system (NTS), have a tendency to increase organic carbon in the soil. However, in Brazilian cotton production, the conventional tillage system (CTS) is predominant, and long-term studies on cotton crop under the NTS are scarce. The present study aimed to evaluate the effect of soil management and crop rotation systems on the cotton fiber yield as well as on the carbon and nitrogen accumulation in the soil. This study was conducted in the Brazilian savanna over 9 years and consisted of the following four treatments with different soil management systems: the NTS and CTS with the succession or rotation of crops (cotton, soybean, maize, and Urochloa ruziziensis). The NTS increased the carbon content by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum; No-tillage; Conventional tillage; Nitrogen; Carbon stock; 5.01.01.06-4.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/43039

Chemical attributes of a savannah Typic Hapludox soil under management systems - doi: 10.4025/actasciagron.v33i3.6593
Provedor de dados: 1
Autores: Muraishi, Cid Tacaoca; Unesp-Faculdade de Engenharia; Alves, Marlene Cristina; UNESP-FACULDADE DE ENGENHARIA; Silva Júnior, Aparecido da; DEFERS - Faculdade de Engenharia-Campus de Ilha Solteira-UNESP; Souza, Zigomar Menezes de; UNICAMP - FEAGRI.
This study was conducted at the Experimental Station belonging to UNESP Engineering University, Ilha Solteira Campus, based in Selvíria, Mato Grosso do Sul State, Brazil, with the aim of evaluating chemical alterations in an Oxisol after being managed for two years with organic and/or chemical fertilization and different tillage systems during the agricultural years of 2004/2005 and 2005/2006. The treatments were: conventional-tillage; chisel tillage and no-tillage; the fertilization treatments were: control (no fertilization); chemical fertilization (300 kg ha-1 from the 20-00-20); organic fertilization (cattle manure - 20 Mg ha-1); organic + ½ the recommended chemical fertilization for the used crop; 20 and 30 Mg ha-1 of sewage sludge. Soybean was used...
Tipo: Pesquisa de Campo.
Palavras-chave: 5.01.01.00-5/5.01.01.06-4 cattle manure; Sewage sludge; Soil management; No-tillage Manejo e Conservação do Solo cattle manure; Sewage sludge; Soil management; No-tillage.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6593

Fitomassa e acúmulo de nitrogênio, em espécies vegetais de cobertura do solo para um Latossolo Vermelho distroférrico de Cerrado - DOI: 10.4025/actasciagron.v30i4.5313
Provedor de dados: 1
Autores: Souza, Edicarlos Damacena de; UFG; Carneiro, Marco Aurélio Carbone; UFG; Banys, Vera Lúcia; UFG.
Espécies vegetais com alta produção de fitomassa são de fundamental importância para o desenvolvimento sustentável do plantio direto no cerrado. Objetivou-se avaliar a produção de fitomassa e o acúmulo de nitrogênio em 17 espécies vegetais em um Latossolo Vermelho distroférrico da região do Cerrado. O trabalho foi realizado no campo experimental da Universidade Federal de Goiás, localizado no Centro de Ciências Agrárias e Biológicas no Campus de Jataí – Estado de Goiás. O delineamento experimental adotado foi o de blocos ao acaso, com cinco repetições. Foram utilizadas as espécies: Aveia preta comum, Aveia preta IAPAR61, Braquiaria brizantha, Braquiaria decumbens, Capim-pé-de-galinha, Milheto BN2, Milheto BRS 1501, Milheto MT, Crotalaria spectabilis,...
Palavras-chave: 5.01.00.00-9    Agronomia conservação do solo; Manejo do solo; Plantio direto; Leguminosa; Gramíneas. soil conservation; Soil management; No-tillage; Legume; Grass species.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5313

Macrofauna invertebrada do solo em sistema integrado de produção agropecuária no Cerrado - DOI: 10.4025/actasciagron.v30i5.5974
Provedor de dados: 1
Autores: Silva, Rogério Ferreira da; UEMS; Aquino, Adriana Maria de; EMBRAPA; Mercante, Fábio Martins; EMBRAPA; Guimarães, Maria de Fátima; UEL.
O trabalho teve como objetivo avaliar a densidade e diversidade da macrofauna invertebrada do solo de um sistema de produção envolvendo a rotação lavoura e pecuária, sob plantio direto. O trabalho foi conduzido no Município de Dourados, Estado do Mato Grosso do Sul, num LATOSSOLO VERMELHO Distroférrico típico, em parcelas com monocultivo e preparo convencional do solo, sistema integrado lavoura/pecuária em plantio direto e pastagem contínua, e um fragmento de vegetação nativa. As avaliações foram realizadas em quatro épocas distintas: janeiro/2002, junho/2002, janeiro/2003 e julho/2003, conforme o método recomendado pelo programa “Tropical Soil Biology and Fertility” (TSBF). Os sistemas com menor interferência antrópica apresentaram maior abundância e...
Palavras-chave: 5.02.01.07-7 Solos Florestais rotação lavoura/pecuária; Plantio direto; Fauna do solo; Diversidade crop-livestock rotation; No-tillage; Soil fauna; Diversity.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5974

Determinação da densidade relativa do solo por uma função de pedotransferência para a densidade do solo máxima - doi: 10.4025/actasciagron.v33i2.6120
Provedor de dados: 1
Autores: Marcolin, Clóvis Dalri; Universidade do Oeste de Santa Catarina; Klein, Vilson Antonio; UPF.
O objetivo desse trabalho foi estimar a densidade relativa do solo (DR) a partir de uma função de pedotransferência para a densidade do solo máxima (Dsmáx). Amostras de dez solos, em sistema de plantio direto estabelecido há mais de dez anos, foram coletadas no Estado do Rio Grande do Sul, em camadas de 5 até 30 cm de profundidade, com a estrutura preservada e não-preservada. Determinaram-se a granulometria, os teores de matéria orgânica (MO), a densidade do solo (Ds) e a Ds do solo máxima (DsMax) pela metodologia do ensaio de Proctor. Com esses dados foi ajustada uma equação de regressão linear para se obter o valor da Dsmáx a partir dos teores de argila e MO no solo. Para os solos avaliados no Estado do Rio Grande do Sul a densidade do solo máxima pode...
Palavras-chave: Ciências Agrárias  Agronomia  Ciência do Solo  Física doSolo compactação do solo; Plantio direto; Textura; Matéria orgânica Física do Solo soil compaction; No-tillage; Texture; Organic matter.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6120

Carbono total e atributos químicos com diferentes usos do solo no Cerrado - DOI: 10.4025/actasciagron.v31i4.792
Provedor de dados: 1
Autores: 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

Soybean productivity in Rhodic Hapludox compacted by the action of furrow openers
Provedor de dados: 1
Autores: Trentin, Robson Gonçalves; Modolo, Alcir José; Vargas, Thiago de Oliveira; Campos, José Ricardo da Rocha; Adami, Paulo Fernando; Baesso, Murilo Mesquita.
The heavy traffic of machines in no-tillage systems causes problems as soil compaction and loss of crops productivity. The objective of this paper is to evaluate the productivity of soybeans in reference to furrow openers and the levels of soil compaction in two crops. The experiment was conducted on Rhodic Hapludox by tracing random blocks with subdivided parcels. The soil bulk density levels were laid out in the parcels (1.16, 1.20, 1.22, and 1.26 Mg m-3) and the furrowers in the sub-parcels (double disc and shanks). The resistance to penetration, depth of the furrow, mobilized soil area, final plant stands, height of plants, mean number of beans by pod, 1,000 bean mass, number of pods per plant and productivity of the culture were evaluated. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Seeder-fertilizer; Soil density.; Mecanização Agrícola.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35015

Correlação linear e espacial entre a produtividade do feijoeiro e atributos físicos de um LATOSSOLO VERMELHO Distroférrico de Selvíria, Estado de Mato Grosso do Sul - DOI: 10.4025/actasciagron.v31i1.6641
Provedor de dados: 1
Autores: Martins, Mariana Ventura; UNESP; Carvalho, Morel de Passos e; UNESP; Andreotti, Marcelo; UNESP; Montanari, Rafael; UNESP.
Os atributos físicos do solo têm se mostrado de grade interesse para a agricultura contemporânea, uma vez que refletem decisivamente sobre a produtividade vegetal. Em 2006, no campus da Faculdade de Engenharia de Ilha Solteira, Unesp, analisou-se a produtividade do feijoeiro (PG) no sistema plantio direto irrigado, a resistência mecânica do solo à penetração (RP), a densidade do solo (DS) e as umidades gravimétrica (UG) e volumétrica (UV) em profundidade, num LATOSSOLO VERMELHO Distroférrico. O objetivo foi determinar as correlações lineares e espaciais, entre os atributos estudados, visando selecionar um indicador da qualidade física do solo de boa representatividade para a PG. Foi instalada a malha, para a coleta de dados contendo 135 pontos amostrais,...
Palavras-chave: 5.02.01.07-7 Solos Florestais manejo do solo; Qualidade física do solo; Plantio direto; Agricultura de precisão; Phaseolus vulgaris. soil management; Soil physical quality; No-tillage; Precision agriculture; Phaseolus vulgaris.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6641

Extração de nutrientes e produtividade de genótipos de milho afetados por níveis de palha - doi: 10.4025/actasciagron.v33i4.3979
Provedor de dados: 1
Autores: Sá, João Carlos de Moraes; Universidade Estadual de Ponta Grossa; Ferreira, Ademir de Oliveira; Universidade Federal de Santa Maria; Briedis, Clever; Universidade Estadual de Ponta Grossa; Vieira, Ângelo Marcio; Coamo Agroindustrial Cooperativa; Figeuiredo, André Gradowski de; Monsanto do Brasil Ltda.
Em um Latossolo Vermelho argiloso, localizado no município de Ponta Grossa, Estado do Paraná, foi avaliada a extração de nutrientes e a produtividade de genótipos de milho, submetidos a níveis de palha no sistema plantio direto. O delineamento experimental foi o de blocos ao acaso dispostos em parcelas subdivididas com três repetições. A parcela foi constituída por três níveis de palha na superfície do solo (sem palha; 5,0 e 10,0 t ha-1) e a subparcela foi constituída por genótipos de milho (13 genótipos). A ordem do ganho relativo na extração total de nutrientes em relação a 5,0 e 10,0 t ha-1 de palha foi K &gt; P &gt; N, cujos valores foram de 30,4 e 47,1; 17,6 e 26,4 e 5,4 e 11,3%, respectivamente. Os genótipos de milho apresentaram comportamento...
Palavras-chave: Ciência Agrárias; Ciência do solo; Nutrição de plantas cobertura do solo; Zea mays; Plantio direto Nutrição de plantas soil cover; Zea mays; No-tillage.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3979

Effect of different tillage and residue management practices on growth and yield of corn cultivation in Thailand
Provedor de dados: 111
Autores: Sornpoon, Wlaiwan; Jayasuriya, Hemantha P. W.
The tillage and residue management during soil bed preparation need to be in appropriate manner for sustainable farming practice.  The effects of tillage and residue management methods on corn cropping were studied on loamy soil in Bangrakum district, Phitsanulok Province, Thailand.  The effects of five commonly used tillage methods: subsoiler tillage (ST), three methods of conventional tillage (CT1, CT2 and CT3), no-tillage (NT), as main factors and two corn residue management methods; burned (R1) and unburned (R2), as sub-factors were studied in a randomized strip plot configuration.  Tillage treatment showed significant effect on physical and chemical soil properties, plant growth and development, grain yield, total aboveground biomass and most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Tillage optimization Tillage; No-tillage; Emergence; Compaction; Subsoiler; Biomass.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2235

Conservation Tillage Assessment for Wheat cropping in the Central Iran: Energetic, economics and environmental aspects (Case Study: Isfahan Province)
Provedor de dados: 111
Autores: Aliasgarian, Saeed.
Conservation tillage due to some properties such as reduction in time and energy required for seedbed preparation is going to be an unavoidable choice in region with arid and semiarid climate. This research was conducted at Murchehkhort farms, central region of Iran to energetic, economics and environmental evaluation of different tillage systems. The study was planned as a completely randomized block design with three tillage treatments replicated three times. The tillage treatments were: no-tillage (NT): direct drilling, reduced tillage (RT): chisel plow and roller packing as a combined machine followed by a light disking and drilling; and Conventional tillage (CT): moldboard plow followed by two heavy harrow diskings and drilling. NT Compared to CT and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Reduced tillage; Energy efficiency; Gross margin; Herbicide.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4049

Palisadegrass effects on N fertilizer dynamic in intercropping systems with corn
Provedor de dados: 42
Autores: ALMEIDA,RODRIGO E.M. DE; OLIVEIRA,SILAS M. DE; LAGO,BRUNO C.; P. JUNIOR,CLOVIS; TRIVELIN,PAULO C.O.; FAVARIN,JOSÉ L.
ABSTRACT Corn grain yield, nitrogen (N) fertilizer efficiency and distribution to corn alone and three forms of corn and palisadegrass (Urochloa spp.) intercropping implantation was investigated. A field experiment with 15N labeling fertilizer was performed in randomized block design. No form of palisadegrass intercropping implantation affected corn grain yield, total N accumulation and N use efficiency (NUE), which were 8.7 t ha-1, 205 kg ha-1 and 37% respectively. The palisadegrass produced on average 1.9 t of dry mass, absorbing a maximum of 6 kg ha-1 or 5.5% of N fertilizer during corn growing. Furthermore, the palisadegrass did not affect N fertilizer distribution in soil-plant system, in which 28.2% was recovered in the soil and 40.4% in the plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 15N isotope; Crop-livestock integration; Nitrogen use efficiency; No-tillage; Urochloa spp.; Zea mays.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401917

Soil attributes under different crop management systems in an Amazon Oxisols
Provedor de dados: 53
Autores: Lopes,Elessandra Laura Nogueira; Fernandes,Antonio Rodrigues; Teixeira,Renato Alves; Sousa,Edna Santos de; Ruivo,Maria de Lourdes Pinheiro.
AbstractSoil biological properties have a high potential for use in assessing the impacts of crop systems. The objective of this study is to evaluate the effects of cropping systems on the biological attributes of an oxisol in the Amazonian state of Pará. The treatments consisted of approximately 20-year-old secondary vegetation, recovered pasture, no-tillage systems (NT) maintained for 4 and 8 years after planting with corn (Zea mays L.) and soybean (Glycine max L.), and conventional tillage (CT) systems every 2 years after planting with rice (Oryza sativa L.) and soybean. The microbial biomass to nitrogen ratio was higher in the NT system (0.68 mg kg–1), and the NT system had greater microbial NT8. Thus, the contributions of organic matter from straw...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbon stock; No-tillage; Oryza sativa; Glycine max; Zea mays; Amazon region.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000400428

Soil chemical attributes and energetic potential of agricultural residual biomasses provided by 23-year soil management
Provedor de dados: 53
Autores: Pierri,Letícia de; Pauletti,Volnei; Barth,Gabriel; Motta,Antônio Carlos Vargas; Silva,Dimas Agostinho da; Roza,Luciano Antunes da; Saudade,Cesar Augusto Schmid.
ABSTRACT Residual biomass from grains has potential as an energetic source. Biomass composition determines this potential and is related to plant nutrition, which may vary according to soil fertility. The aim of this 23-year field study was to evaluate changes in chemical attributes of a Brazilian Oxisol and in the energetic potential of oat (Avena sativa L.) and soybean (Glycine max (L.) Merr) residual biomasses provided by tillage systems and fertilizer rates. The trial was performed since 1989, assessing soil chemical attributes in no-tillage (NT), conventional (CT), minimum (MT) and no-tillage plus chisel plough (NT+CP), with two fertilizer rates (normal and reduced, since 1994). Oat and soybean (2012/2013) residual biomasses were collected and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioenergy; No-tillage; Fertilization; Avena sativa L.; Glycine max (L.) Merr.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000300454

Redistribution of phosphorus in soil through cover crop roots
Provedor de dados: 52
Autores: Franchini,Júlio C.; Pavan,Marcos A.; Miyazawa,Mário.
The objective of this study was to evaluate if cover crops can absorb P from the upper layers and transport it in their roots to subsoil layers. Samples of an Oxisol were placed in PVC columns. Super phosphate fertilizer was applied to the 0-10 cm soil surface layers. The cover crops tested were: Avena strigosa, Avena sativa, Secale cereale, Pisum sativum subsp arvense, Pisum sativum, Vicia villosa, Vicia sativa, Lupinus angustifoliu, Lupinus albus, and Triticum aestivum. After a growth period of 80 days the cover crop shoots were cut off and the soil was divided into 10cm layers and the roots of each layer were washed out. The roots and shoots were analyzed separated for total P contribution to the soil. Considerable amount of P was present in the roots...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phosphorus nutrition; Soil phosphorus; Green manure; No-tillage.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000300007

Outstanding impact of soil tillage on the abundance of soil hydrolases revealed by a metagenomic approach
Provedor de dados: 58
Autores: Souza,Renata Carolini; Cantão,Maurício Egídio; Nogueira,Marco Antonio; Vasconcelos,Ana Tereza Ribeiro; Hungria,Mariangela.
ABSTRACT The soil represents the main source of novel biocatalysts and biomolecules of industrial relevance. We searched for hydrolases in silico in four shotgun metagenomes (4,079,223 sequences) obtained in a 13-year field trial carried out in southern Brazil, under the no-tillage (NT), or conventional tillage (CT) managements, with crop succession (CS, soybean/wheat), or crop rotation (CR, soybean/maize/wheat/lupine/oat). We identified 42,631 hydrolases belonging to five classes by comparing with the KEGG database, and 44,928 sequences by comparing with the NCBI-NR database. The abundance followed the order: lipases &gt; laccases &gt; cellulases &gt; proteases &gt; amylases &gt; pectinases. Statistically significant differences were attributed to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metagenome; Microbiome; Soil enzymes; Soil management; No-tillage.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000400723

Relationship between blast severity on seedlings and panicles of Brazilian oat cultivars
Provedor de dados: 65
Autores: Danelli,Anderson Luiz Durante; Maciel,João Leodato Nunes; Boaretto,Cristina; Cruz,Christian; Castro,Ricardo Lima de; Forcelini,Carlos Alberto.
ABSTRACT: Blast, caused by Pyricularia oryzae, threats black (Avena strigosa) and white (A. sativa) oats in Brazil. Little is known about the reaction of Brazilian oat cultivars to blast and if there is a relationship between the response of cultivars to the disease at seedling and adult plant stages. The goals of this research were to verify (a) the reaction of black and white Brazilian oat cultivars to infection of P. oryzae and (b) if the response to blast on seedling leaves and panicles was correlated. Seedlings and adult plants of 13 oat cultivars were inoculated with a conidial suspension of one P. oryzae isolate obtained from a black oat cultivar. The cultivars were classified according to blast severity on the leaf seedlings and panicles estimated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyricularia oryzae; Severity; No-tillage.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200205

Carbon stocks in organic matter fractions as affected by land use and soil management, with emphasis on no-tillage effect
Provedor de dados: 65
Autores: Bayer,Cimélio; Dick,Deborah Pinheiro; Ribeiro,Genicelli Mafra; Scheuermann,Klaus Konrad.
Land use and soil management may affect both labile and humified soil organic matter (SOM) fractions, but the magnitude of these changes is poorly known in subtropical environments. This study investigated effects of four land use and soil management systems (forest, native pasture, and conventional tillage and no-tillage in a wheat/soybean succession) on (i) total soil organic carbon (SOC) stocks (0 to 250mm depth) and on (ii) carbon (C) stocks in labile (coarse, light) and humified (mineral-associated, humic substances) SOM fractions (0 to 25mm depth), in a Hapludox soil from southern Brazil. In comparison to the adjacent forest site, conventionally tilled soil presented 36% (46.2Mg ha-1) less SOC in the 0 to 250mm depth and a widespread decrease in C...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil organic matter; Physical fractionation; Light fraction; Coarse fraction; No-tillage.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782002000300006

Gas chromatography and photoacoustic spectroscopy for the assessment of soil greenhouse gases emissions
Provedor de dados: 65
Autores: Nicoloso,Rodrigo da Silveira; Bayer,Cimélio; Denega,Genuir Luis; Oliveira,Paulo Armando Victória de; Higarashi,Martha Mayumi; Corrêa,Juliano Corulli; Lopes,Letícia dos Santos.
Assessments of soil carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) emissions are critical for determination of the agricultural practices' potential to mitigate global warming. This study evaluated the photoacoustic spectroscopy (PAS) for the assessment of soil greenhouse gases (GHG) fluxes in comparison to the standard gas chromatography (GC) method. Two long-term experiments with different tillage and cropping systems over a Paleudult were evaluated using static chambers. PAS measurements of CO2 and N2O concentrations showed good relationship and linearity (R2=0.98 and 0.94, respectively) with GC results. However, CH4 measurements were significantly affected by air sample moisture which interfered on CH4 detection by PAS. Overestimation of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Conventional tillage; Cover crops; INNOVA 1412.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000200012

Ammonia and carbon dioxide emissions by stabilized conventional nitrogen fertilizers and controlled release in corn crop
Provedor de dados: 64
Autores: Souza,Taylor Lima de; Guelfi,Douglas Ramos; Silva,André Leite; Andrade,André Baldansi; Chagas,Wantuir Filipe Teixeira; Cancellier,Eduardo Lopes.
ABSTRACT The market of stabilized, slow and controlled release nitrogen (N) fertilizers represents 1% of the world fertilizer consumption. On the other hand, the increase in availability, innovation and application of these technologies could lead to the improvement of N use efficiency in agroecossystems and to the reduction of environmental impacts. The objective of this study was to quantify agronomic efficiency relative index, ammonia volatilization, and CO2 emissions from conventional, stabilized and controlled release N fertilizers in corn summer crop. The experiment was carried out in a corn crop area located in Lavras, state of Minas Gerais, Brazil, without irrigation. All treatments were applied in topdressing at rate of 150 kg ha-1 N. N-NH3 losses...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CO2; NH3 loss; No-tillage; Zea mays L.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500494