|
|
|
| Registros recuperados: 34 | |
|
| |
|
|
| Ceccon,Gessí; Staut,Luiz Alberto; Sagrilo,Edvaldo; Machado,Luís Armando Zago; Nunes,Danieli Pieretti; Alves,Valdecir Batista. |
| The feasibility of no-tillage in the Cerrado (Savanna-like vegetation of Brazil) depends on the production of sufficient above-ground crop residue, which can be increased by corn-forage intercropping. This study evaluated how above-ground crop residue production and yields of soybean and late-season corn in a soybean-corn rotation were influenced by the following crops in the year before soybean: corn (Zea mays L.) intercropped with Brachiaria (Urochloa) brizantha cv. Marandu, B. decumbens cv. Basilisk, B. ruziziensis, cv. comum., Panicummaximum cv. Tanzânia, sunn hemp (Crotalaria juncea L.), pigeon pea [Cajanus cajan (L.) Millsp]; sole corn, forage sorghum [Sorghum bicolor (L.) Moench (cv. Santa Elisa)], and ruzi grass. In March 2005, corn and forage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; No-till; Biomass; Above-ground crop residue. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000100021 |
| |
|
|
| Giacomeli,Robson; Marchesan,Enio; Oliveira,Maurício Limberger de; Martin,Thomas Newton; Teló,Gustavo Mack; Donato,Gabriel; Silva,Marília Ferreira da. |
| ABSTRACT Rice monoculture in lowlands can cause problems for management practices in crop fields, for example, in weed control. For this reason, corn in rotation with irrigated rice in lowlands may be advantageous, despite problems with soil compaction and water excess. The objective of this study was to evaluate soil physical properties and corn performance in soil management systems in an Albaqualf soil (lowlands). Two experiments were conducted in the field, in the 2013/14 and 2014/15 crop seasons. The experimental design was randomized blocks with two factors. There were three levels for the first factor, consisting of soil management practices: soil chiseling 45 days before sowing to a depth of 0.3 m; conventional tillage with two diskings to a depth... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Soil compaction; Soil chiseling; No-till; Raised seedbed. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100408 |
| |
|
|
| Chavez,Luis Fernando; Amado,Telmo Jorge Carneiro; Bayer,Cimélio; La Scala,Newton Junior; Escobar,Luisa Fernanda; Fiorin,Jackson Ernani; Campos,Ben-Hur Costa de. |
| Agricultural soils can act as a source or sink of atmospheric C, according to the soil management. This long-term experiment (22 years) was evaluated during 30 days in autumn, to quantify the effect of tillage systems (conventional tillage-CT and no-till-NT) on the soil CO2-C flux in a Rhodic Hapludox in Rio Grande do Sul State, Southern Brazil. A closed-dynamic system (Flux Chamber 6400-09, Licor) and a static system (alkali absorption) were used to measure soil CO2-C flux immediately after soybean harvest. Soil temperature and soil moisture were measured simultaneously with CO2-C flux, by Licor-6400 soil temperature probe and manual TDR, respectively. During the entire month, a CO2-C emission of less than 30 % of the C input through soybean crop residues... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: No-till; Greenhouse gases; Soil temperature; Soil moisture. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000200010 |
| |
|
|
| Tavares Filho,João; Feltran,Clarissa Tieme Matsuda; Oliveira,José Francirlei de; Almeida,Edinei de. |
| Soil penetration resistance is an important property that affects root growth and elongation and water movement in the soil. Since no-till systems tend to increase organic matter in the soil, the purpose of this study was to evaluate the efficiency with which soil penetration resistance is estimated using a proposed model based on moisture content, density and organic matter content in an Oxisol containing 665, 221 and 114 g kg-1 of clay, silt and sand respectively under annual no-till cropping, located in Londrina, Paraná State, Brazil. Penetration resistance was evaluated at random locations continually from May 2008 to February 2011, using an impact penetrometer to obtain a total of 960 replications. For the measurements, soil was sampled at depths of 0... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: No-till; Compaction; Physical properties; Organic matter. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000100010 |
| |
|
|
| Dugato,Dailson; Palma,Marcos A. Z.. |
| ABSTRACT In precision seed-fertilizer drills, the soil compaction mechanism is responsible for closing the furrow, pressing the soil over the seed. Among the available models, the most used is the V-type wheel system, with several options to regulate the wheel opening angle and pressure exerted on the soil. This study was carried out in the experimental area of the Federal University of Fronteira Sul - Campus Cerro Largo, in an clayey Red Latosol. Parameters related to corn emergence and the seedbed characteristics were evaluated at different regulations of opening angle and pressure of the compaction mechanism. The results indicate that mechanism regulations had no influence on emergence speed, emergence speed index and population of corn plants, under... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: No-till; Mobilized soil area; Seed furrow. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001000726 |
| |
|
|
| Zanatta,Josiléia Acordi; Vieira,Frederico Costa Beber; Briedis,Clever; Dieckow,Jeferson; Bayer,Cimélio. |
| ABSTRACT: Management systems to improve soil quality are essential for agricultural and environmental sustainability. We assessed the quality of soil management systems applied to a subtropical Acrisol in terms of the carbon management index (CMI), the stratification ratio for total organic carbon (SR-TOC) and light fraction of organic matter (SR-LF). In addition, we examined their relationship to chemical, physical and biological soil quality indicators, as well as to maize yield. The study was conducted on a long-term experiment (18 years) in southern Brazil involving two different systems [no tillage (NT) and conventional tillage (CT)], two cropping systems [black oat/maize (O/M) and black oat + vetch/maize + cowpea (OV/MC)] and two nitrogen fertilizer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation agriculture; Cropping systems; No-till; Quality indicators. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001600501 |
| |
|
|
| Arf,Orivaldo; Rodrigues,Ricardo Antonio Ferreira; Crusciol,Carlos Alexandre Costa; Sá,Marco Eustáquio de; Buzetti,Salatiér. |
| The use of sprinkler irrigation for rice (Oryza sativa L.) crop is a relatively recent practice in Brazil. Therefore, crop soil and fertilization management are still not very well defined. Another problem is the inexistence of specific cultivars adapted to this cropping system. This study aimed to evaluate sprinkler-irrigated upland rice cultivars under different soil management practices and nitrogen sidedressing rates in relation to yield and grain quality. A randomized block design was used, arranged as a 3 x 3 x 5 factorial scheme, totaling 45 treatments consisting of the combination of three rice cultivars (Primavera, Confiança and Maravilha), three soil management systems (disk harrow + levelling harrow, moldboard plow + levelling harrow and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa L; Yield components; Moldboard plow; Harrow; No-till. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200020 |
| |
|
|
| Bertol,Ildegardis; Zoldan Junior,Wilson Antonio; González,Antonio Paz; Barbosa,Fabrício Tondello; Werner,Romeu de Suza. |
| Soil management influences water erosion and sediment size in runoff. With the objective of quantifying sediments in runoff and their relation to runoff velocity (Rv), random roughness (RR), and Ir index, this experiment was carried out from 2003 to 2006, on a typical Hapludox with the following soil management systems submitted to chiseling: i) bare soil with plowing+two disking tillage (BSC); ii) plowing+two disking tillage (CTC); iii) no tillage with crop residues burned (BNTC); and iv) traditional notillage (TNTC). CTC, BNTC and TNTC treatments were cultivated with crop rotation and the BSC treatment was not cultivated. Five simulated rainfall tests were applied, with intensity of 64 mm h-1 and duration of 20, 30, 40, 50 and 60 min. RR was influenced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water erosion; Chiseling; No-till; Sediment D50 index. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500013 |
| |
|
|
| Fernandes,Flávia Carvalho Silva; Libardi,Paulo Leonel; Carvalho,Laércio Alves de. |
| Excessive nitrate leaching represents a potential groundwater contamination. This study was carried out in an experiment area located in the city of Piracicaba/SP- Brazil, on a sandy-clayey loam soil. The objective was to evaluate internal drainage and nitrate leaching at the depth of 0.80 m in a crop succession, using 15N-labeled ammonium sulfate, in two split N applications. Evaluations were based on two corn crops, the first grown during the 2003/2004 cropping season, and the second in the 2004/2005 season, and on a black oat crop grown during the off-season. Treatments consisted of a single 120 kg N ha-1 rate, in the form of labeled (15N) ammonium sulfate, and two split N applications at 30-90 and 60-60 kg N ha-1. The fertilizer was applied in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flux density; 15N-ammonium sulfate; No-till; Soil solution. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000500011 |
| |
|
|
| Teixeira, Cícero Monti; Empresa de Pesquisa Agropecuária de Minas Gerais; Carvalho, Gabriel José de; Universidade Federal de Lavras; Silva, Carlos Alberto; Universidade Federal de Lavras; Andrade, Messias José Bastos de; Universidade Federal de Lavras; Paes, José Mauro Valente; Empresa de Pesquisa Agropecuária de Minas Gerais. |
| O objetivo foi avaliar o efeito das palhadas de milheto (Pennisetum typhoides (Burm.) Stapf) e milheto + feijão-de-porco (Canavalia ensiformes (L.) DC.) e diferentes doses de nitrogênio, na nutrição mineral do feijoeiro. O delineamento foi em blocos casualizados, com quatro repetições, em esquema de parcelas subdivididas, em Latossolo Vermelho, em plantio direto. As parcelas foram constituídas pelas palhadas e as subparcelas por um fatorial 2 x 4 + 1, representado por duas doses de N na semeadura (30 e 60 kg ha-1) e quatro em cobertura (0, 40, 80 e 120 kg ha-1), mais um tratamento adicional, correspondente a 30 kg ha-1 de N na semeadura, sem cobertura, com inoculação das sementes com Rhizobium tropici e aplicação foliar de Co e Mo. A palhada de milheto +... |
|
Palavras-chave: 5.01.00.00-9 plantas de cobertura; Sistema plantio direto; Consórcio gramínea x leguminosa; Adubação nitrogenada; Fixação biológica de nitrogênio 5.01.01.03-0 cover crops; No-till; Grassy x leguminous intercropping; Nitrogen fertilizer; Biology nitrogen fixation. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4392 |
| |
|
|
| Sharifi, Ahmad; Sadeghnezhad, Hamid Reza; Faraji, Abolfazl. |
| Conservation tillage systems have been used during recent years in many areas of Iran. In this study, the effect of conservation tillage on soybean yield, yield components and phenological characteristics was evaluated in Golestan province located at the northern Iran. Four different treatments including conventional tillage (CT), minimum tillage (MT), no- tillage with no-till planter (NT-Planter) and no-tillage with no-till grain drill (NT-Grain Drill) were considered. A randomized complete block design with four replications was designed for the experiment. Soybean yield and yield components and some phenological characteristics were measured. Data were analyzed using SAS software and Duncan’s multiple range tests was used to compare the means. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation tillage; Minimum tillage; No-till; Soybean. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3544 |
| |
|
| |
|
|
| Pauletti,Volnei; Serrat,Beatriz Monte; Motta,Antonio Carlos Vargas; Favaretto,Nerilde; Anjos,Adilson dos. |
| Two research fields were conducted on a Haplohumox from 1998 and to 2005. The study aimed to evaluate the strategies for starter fertilizer application on corn, soybean and common bean yield as well as the accumulation of earlier dry matter for corn in a no-tillage crop rotation system in south of Brazil. There was no increase in the yield of soybean with phosphorus and potassium application for at least seven seasons, while corn and common bean showed increased yields with phosphorus, potassium and nitrogen application. For soybean, corn and common beans in no-tillage systems with high levels of phosphorus and medium of potassium, the starter fertilizer can be applied in any of the methods evaluated and in any of the period considered. The presence or... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Starter fertilizer; Application technique; Fertilizer management; Crop rotation; No-till. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000300009 |
| |
| Registros recuperados: 34 | |
|
|
|
