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| Registros recuperados: 36 | |
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| Wenneck, Gustavo Soares; Saath, Reni; Araujo, Larissa Leite de; Pereira, Gustavo Lopes; Rezende, Roberto; Wenneck, Guilherme Soares. |
| Crop biomass plays an important role, especially in tropical and subtropical crops that adopt the no-tillage system, whose decomposition is related to material composition and environmental conditions. The objective of this work was to analyze the decomposition of straw remaining from autumn/winter crops in the development of soybean in succession in the Midwest region of Paraná. The experiment was conducted between 2019 and 2021 in a completely randomized design, with eight treatments (spontaneous, black oat, brachiaria, corn, wheat, oilseed radish, corn + brachiaria, and black oat + oilseed radish) and four replications. After autumn/winter cultivation, biomass samples were dried and placed in nylon bags, returning to the original plot during soybean... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Land cover; Organic matter; No-tillage system; Cobertura de solo; Matéria orgânica; Sistema plantio direto. |
| Ano: 2021 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6534 |
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| Galindo,Fernando Shintate; Teixeira Filho,Marcelo Carvalho Minhoto; Buzetti,Salatiér; Santini,José Mateus Kondo; Alves,Cleiton José; Ludkiewicz,Mariana Gaioto Ziolkowski. |
| Abstract: The objective of this work was to evaluate the effect of inoculation with Azospirillum brasilense, associated with N rates and sources, in soil of the Cerrado (Brazilian savanna), on the grain yield of irrigated wheat (Triticum aestivum). The experiment was carried out under a no-tillage system in a Typic Haplustox. The experimental design was randomized complete blocks with four replicates, in a 2x5x2 factorial arrangement: two N sources (urea and urea with NBPT urease inhibitor); five N rates applied as topdressing (0, 50, 100, 150, and 200 kg ha-1); and with or without seed inoculation with A.brasilense. The increase in the N rates positively affected spike length, number of spikelets and of grains per spike, number of spikes per meter, N... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Biological nitrogen fixation; Nitrogen sources; No-tillage system; Urease inhibitor. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000900794 |
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| Vizioli,Bruno; Cavalieri-Polizeli,Karina Maria Vieira; Barth,Gabriel. |
| Abstract: The objective of this work was to evaluate the influence of ryegrass (Lolium multiflorum) managements on the physical properties of a Haplohumox, and on the yields of corn and of ryegrass cultivated in succession to corn. The experiment was carried out in a randomized complete block design, with three treatments and three replicates, in which treatments were the different managements of ryegrass under no-tillage for silage, soil cover, and grazing. After nine years of management, samples were collected at 0.00-0.05, 0.05-0.10, 0.10-0.20, and 0.20-0.30-m soil depths, to determine the following soil properties: texture, total organic carbon, soil bulk density, macroporosity, microporosity, total porosity, and resistance to root penetration. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lolium multiflorum; No-tillage system; Soil physical quality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000800952 |
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| Bonetti,João de Andrade; Paulino,Helder Barbosa; Souza,Edicarlos Damacena de; Carneiro,Marco Aurélio Carbone; Caetano,Jeander Oliveira. |
| Abstract: The objective of this work was to evaluate the soil physical and biological properties in an integrated crop-livestock system (ICLS), with or without cattle grazing, in different seasons. The experiment was carried out in the Cerrado biome, in Brazil, in a Rhodic Eutrudox. The treatments consisted of grazing areas (Urochloa ruziziensis) at 0.25, 0.35, and 0.45 m heights (with soybean cultivation after grazing) and of nongrazed areas. The ICLS had no negative effects on soil bulk density, total porosity, macroporosity, and microporosity. After ICLS implementation, the values of soil bulk density decreased, and those of soil macroporosity increased, in the grazed and nongrazed areas. However, after three years, bulk density and macroporosity were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal traffic; No-tillage system; Soil aggregation; Soil compaction; Soil microbial biomass; Soil quality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001101239 |
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| Forte,Cesar Tiago; Galon,Leandro; Beutler,Amauri Nelson; Basso,Felipe José Menin; Nonemacher,Felipe; Reichert Júnior,Francisco Wilson; Perin,Gismael Francisco; Tironi,Siumar Pedro. |
| Abstract: The objective of this work was to evaluate the density and composition of the soil weed seed bank when bean, corn, and soybean are cultivated in the no-tillage system (NTS) in rotation with winter cover crop species and in the conventional tillage system (CTS). The experiment was installed in a complete randomized block design with three replicates. The evaluation of the seed bank was performed on soil samples (0-10 and 10-20 cm) in four points of each experimental unit, at 15, 30, 60, and 90 days of cultivation. Bean, corn, and soybean crops were sown in the NTS with different soil cover crops in rotation, as well as in the CTS. The NTS provided a more dense and abundant soil seed bank of the species Gnaphalium spicatum and Oxalis corniculata... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avena strigosa; Raphanus sativus; Vicia sativa; Conventional tillage system; No-tillage system. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400435 |
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| Zulpo,Lucas; Kerpen,Hyran Stefanowski; Fink,Jefferson Antonio; Mazurana,Michael; Levien,Renato. |
| Abstract: The objective of this work was to evaluate the impact of different furrow-opening mechanisms on soil physical characteristics, such as mobilization, porosity, bulk density, and the dynamics of water content and temperature in the sowing groove, as well as the influence of wheeled traffic and of these variables on corn (Zea mays) productivity. The experiment was conducted at the agronomic experimental station of Universidade Federal do Rio Grande do Sul on a Argissolo Vermelho (red Ultisol). Treatments consisted of three winter cover crops and of two types of furrow-opening mechanisms for fertilization (shank and disk), with or without tractor traffic. Corn was planted as the summer crop, and soil mobilization in the sowing groove, soil... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; No-tillage system; Furrow-opening mechanisms; Soil compaction; Soil temperature. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000103804 |
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| Veiga,Milton da; Pandolfo,Carla Maria; Balbinot Junior,Alvadi Antonio; Spagnollo,Evandro. |
| The objective of this study was to evaluate the pig slurry application effects on chemical attributes of a Hapludox soil managed under no-tillage system. Treatments consisted of 50, 100 and 200 m³ ha-1 per year of pig slurry application, and a control with replacement of P and K exported through harvested grains. Attributes related to soil chemical reaction, exchange complex, and nutrient contents were determined in soil samples collected in the ninth year of experimentation from 0 - 0.025, 0.025 - 0.05, 0.05 - 0.10, 0.10 - 0.20, 0.20 - 0.40 and 0.40 - 0.60 m soil depths. The continuous application of high doses of pig slurry on the Oxisol surface under no-tillage acidifies the soil and increases Al, P, Cu, and Zn contents down to 0.2-m depth, and K levels... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acidification; Micronutrients; No-tillage system; Soil fertility; Soil pollution; Soil quality. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012001200013 |
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| BRANT,M.C.; TUFFI SANTOS,L.D.; FREITAS,I.C.; FRAZÃO,L.A.; SILVA,M.S.N.; MACHADO,V.D.; SANTOS,M.V.. |
| ABSTRACT: Light intensity available in growing environments may influence the susceptibility of plants to glyphosate and decomposition of their residues. This study aimed to assess the productivity, control, and decomposition of forage straw submitted to glyphosate doses and exposed to full sun and 50% shade. Two experiments were carried out, one for Piatã grass (Urochloa brizantha cv. Piatã) and other for Tanzania grass (Megathyrsus maximus cv. Tanzania). The experimental design was a randomized block design with strip-plot and four replications. Two growing environments (at full sun and under 50% shade) were installed in strips in the growing area, combined with six doses of glyphosate (0, 360, 720, 1,080, 1,440, and 1,800 g a.e. ha-1) used for forage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop-livestock-forest integration system; No-tillage system; Post-emergence desiccation; Luminous intensity; Urochloa; Megathyrsus. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100329 |
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| Ortigara,Cícero; Moraes,Moacir Tuzzin de; Debiasi,Henrique; Silva,Vanderlei Rodrigues da; Franchini,Julio Cezar; Luz,Felipe Bonini da. |
| Estimation of soil load-bearing capacity from mathematical models that relate preconsolidation pressure (σp) to mechanical resistance to penetration (PR) and gravimetric soil water content (U) is important for defining strategies to prevent compaction of agricultural soils. Our objective was therefore to model the σp and compression index (CI) according to the PR (with an impact penetrometer in the field and a static penetrometer inserted at a constant rate in the laboratory) and U in a Rhodic Eutrudox. The experiment consisted of six treatments: no-tillage system (NT); NT with chiseling; and NT with additional compaction by combine traffic (passing 4, 8, 10, and 20 times). Soil bulk density, total porosity, PR (in field and laboratory measurements), U,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rhodic Eutrudox; No-tillage system; Machinery traffic; Soil compaction. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000401036 |
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| Lourenzi,Cledimar Rogério; Ceretta,Carlos Alberto; Cerini,Jackson Berticelli; Ferreira,Paulo Ademar Avelar; Lorensini,Felipe; Girotto,Eduardo; Tiecher,Tadeu Luis; Schapanski,Dênis Eduardo; Brunetto,Gustavo. |
| The application of animal manure to soil can increase phosphorus availability to plants and enhance transfer of the nutrient solution drained from the soil surface or leached into the soil profile. The aim of this study was to evaluate the effect of successive applications of organic and mineral nutrient sources on the available content, surface runoff and leaching of P forms in a Typic Hapludalf in no-tillage systems. Experiment 1 was set up in 2004 in the experimental area of UFSM, in Santa Maria (RS, Brazil). The treatments consisted of: control (without nutrient application) and application of pig slurry (PS), pig deep-litter (PL), cattle slurry (CS), and mineral fertilizers (NPK). The rates were determined to meet the N crop requirements of no-tillage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic waste; Nutrient release; Environmental contamination; No-tillage system. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000200019 |
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| Galindo,Fernando Shintate; Teixeira Filho,Marcelo Carvalho Minhoto; Buzetti,Salatiér; Santini,José Mateus Kondo; Alves,Cleiton José; Nogueira,Lais Meneghini; Ludkiewicz,Mariana Gaioto Ziolkowski; Andreotti,Marcelo; Bellotte,João Leonardo Miranda. |
| ABSTRACT The biological nitrogen fixation (BNF) process in grasses is caused by diazotrophic bacteria, particularly Azospirillum brasilense. However, studies are lacking on BNF efficiency to define how much mineral nitrogen (N) can be applied to achieve more sustainable high yields. Furthermore, there should be an analysis of whether urea with the urease enzyme inhibitor NBPT is less harmful, benefiting BNF in grasses. The objective of this study was to evaluate the effect of N sources and N rates associated with inoculation with Azospirillum brasilense regarding foliar diagnosis and leaf chlorophyll index (LCI), agronomic efficiency (AE), and corn grain yield in the Cerrado (Brazilian tropical savanna) region. The experiment was conducted in a no-tillage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L; Urease inhibitor; Nitrogen rates; BNF; No-tillage system. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100526 |
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| Pereira,Francisco Cézar Belchor Lages; Mello,Luiz Malcolm Mano de; Pariz,Cristiano Magalhães; Mendonça,Veridiana Zocoler de; Yano,Élcio Hiroyoshi; Miranda,Elka Elice Vasco de; Crusciol,Carlos Alexandre Costa. |
| ABSTRACT Autumn maize intercropped with tropical forages can raise the amount of crop residues and improve nutrient cycling, favoring subsequent soybean crop. The objective of this study was to evaluate the effect of forms of implementation of intercropping of irrigated autumn maize with tropical forages on yield, decomposition, nutrient accumulation and release, and on the ratio of lignin/total N of forage residues, yield components, and grain yield of subsequent soybean, and on soil physical and chemical properties, under no-tillage in lowland Cerrado. The experiment was arranged in randomized blocks in a factorial (4 × 3 + 1) design with one control and four replications. The treatments consisted of four forages: Palisade grass, Congo grass, and two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lowland Cerrado; No-tillage system; Crop residues; Panicum; Urochloa. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100518 |
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| Tirloni,Carolina; Vitorino,Antonio Carlos Tadeu; Bergamin,Anderson Cristian; Souza,Luiz Carlos Ferreira de. |
| Crop-livestock integration represents an interesting alternative of soil management, especially in regions where the maintenance of cover crops in no-tillage systems is difficult. The objective of this study was to evaluate soil physical and chemical properties, based on the hypothesis that a well-managed crop-livestock integration system improves the soil quality and stabilizes the system. The experiment was set up in a completely randomized design, with five replications. The treatments were arranged in a 6 x 4 factorial design, to assess five crop rotation systems in crop-livestock integration, and native forest as reference of soil undisturbed by agriculture, in four layers (0.0-0.05; 0.05-0.10; 0.10-0.15 and 0.15-0.20 m). The crop rotation systems in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop rotation; No-tillage system; Soil quality; Soil carbon; Aggregate stability. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400024 |
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| Silva,Francisco Carlos Mainardes da; Sachs,Luís Guilherme; and,Inês Cristina Batista Fonseca; Tavares Filho,João. |
| ABSTRACT Perennial forage crops used in crop-livestock integration (CLI) are able to accumulate large amounts of straw on the soil surface in no-tillage system (NTS). In addition, they can potentially produce large amounts of soluble organic compounds that help improving the efficiency of liming in the subsurface, which favors root growth, thus reducing the risks of loss in yield during dry spells and the harmful effects of “overliming”. The aim of this study was to test the effects of liming on two models of agricultural production, with and without crop-livestock integration, for 2 years. Thus, an experiment was conducted in a Latossolo Vermelho (Oxisol) with a very clayey texture located in an agricultural area under the NTS in Bandeirantes, PR, Brazil.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria ruziziensis; No-tillage system; Ion mobility. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000501463 |
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| Pariz,Cristiano Magalhães; Andreotti,Marcelo; Buzetti,Salatiér; Bergamaschine,Antonio Fernando; Ulian,Nelson de Araújo; Furlan,Luciano Coletti; Meirelles,Paulo Roberto de Lima; Cavasano,Francielli Aparecida. |
| The greatest limitation to the sustainability of no-till systems in Cerrado environments is the low quantity and rapid decomposition of straw left on the soil surface between fall and spring, due to water deficit and high temperatures. In the 2008/2009 growing season, in an area under center pivot irrigation in Selvíria, State of Mato Grosso do Sul, Brazil, this study evaluated the lignin/total N ratio of grass dry matter , and N, P and K deposition on the soil surface and decomposition of straw of Panicum maximum cv. Tanzânia, P. maximum cv. Mombaça, Brachiaria. brizantha cv. Marandu and B. ruziziensis, and the influence of N fertilization in winter/spring grown intercropped with maize, on a dystroferric Red Latosol (Oxisol). The experiment was arranged... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria; Panicum maximum; Lignin/N ratio; No-tillage system; Zea mays L. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000600019 |
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| Nascente,Adriano Stephan; Li,Yuncong; Crusciol,Carlos Alexandre Costa. |
| Soil aggregation and the distribution of total organic carbon (TOC) may be affected by soil tillage and cover crops. The objective of this study was to determine the effects of crop rotation with cover crops on soil aggregation, TOC concentration in the soil aggregate fractions, and soil bulk density under a no-tillage system (NTS) and conventional tillage system (CTS, one plowing and two disking). This was a three-year study with cover crop/rice/cover crop/rice rotations in the Brazilian Cerrado. A randomized block experimental design with six treatments and three replications was used. The cover crops (treatments) were: fallow, Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, and millet (Pennisetum glaucum). An additional treatment, fallow... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Brachiaria ruziziensis; No-tillage system; Panicum maximum; Pennisetum glaucum; Soil management. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000300871 |
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| Registros recuperados: 36 | |
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