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| Registros recuperados: 36 | |
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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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| 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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| 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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| Neiva Júnior,Eudes; Rocha,Wellington Willian; Pires,Bruno Silva; Farnezi,Múcio Mágno de Melo; Dias Junior,Moacir de Souza; Freitas,Danilo Fernandes Borges de; Silva,Enilson de Barros; Carvalho,Gianniini Alexsandra de Oliveira. |
| Soil compaction is one of the main degradation causes, provoked by inappropriate agricultural practices that override the limitations of the soil physical properties. Preconsolidation pressure and penetration resistance have proved effective as alternative to assess and identify soil compaction. Based on the interpretation of these physico-mechanical parameters, compaction can be prevented with a better adjusted soil management. This study was performed to generate preconsolidation pressure and penetration resistance models for Latososlo Vermelho-Amarelo distrófico (Oxisol) under various managements and uses; and evaluate which of these would lead to degradation or degradation susceptibility. The study was carried out in Curvelo, MG. Two managements and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil compaction; Sheep grazing; No-tillage system; Atlantic rainforest. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100086 |
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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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| 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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| Loss, Arcângelo; UFRRJ - Seropédica; Pereira, Marcos Gervasio; UFRRJ - Seropédica; Schultz, Nivaldo; UFRRJ - Seropedica; Ferreira, Edilene Pereira; UFRRJ - Seropédica; Silva, Eliane Maria Ribeiro da; Embrapa - Seropédica; Beutler, Sidinei Julio; UFRRJ - Seropédica. |
| O objetivo deste estudo foi verificar a influência do manejo agroecológico na distribuição dos agregados estáveis em água e no teor de carbono orgânico dos agregados em diferentes coberturas vegetais. Foram selecionadas cinco áreas, a saber: sistema agroflorestal; cultivo de figo (Ficus carica L.); consórcio maracujá (Passiflora edulis S.)–Desmodium sp.; cultivo de feijão (Phaseolus vulgaris L.), em manejo convencional, e cultivo de milho (Zea mays L.), em plantio direto. Em cada área, foram coletadas amostras de terra indeformadas, nas profundidades de 0 - 5 e 5 - 10 cm, e avaliada a estabilidade dos agregados e o teor de carbono orgânico nos agregados (COAGR). A maior massa de agregados encontra-se na classe de 2,00 mm, em ambas as profundidades, com... |
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Palavras-chave: 5.01.00.00-9 Agronomia agregação; Resíduos vegetais; Plantio direto; Adubação verde aggregation; Vegetable residues; No-tillage system; Green manuring. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/322 |
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| Nascimento,José M. do; Furlani,Carlos E. A.; Chioderoli,Carlos A.; Queiroz,Renata F. de; Bertonha,Rafael S.; Cavichioli,Fabio A.. |
| ABSTRACT The no-tillage system optimizes agricultural areas, maintaining the supply of straw and promoting crop rotation and soil conservation. The aim of the present study was to evaluate sowing quality and grain yield of corn intercropped with three forage species of the Urochloa genus associated with two corn population densities. The experiment was conducted at the São Paulo State University (UNESP), in Jaboticabal-SP, Brazil. The experimental design was randomized blocks in a 2 x 3 factorial scheme with four replicates. The treatments consisted of two corn densities (55,000 and 75,000 plants ha-1) intercropped with three forages (Urochloa brizantha, Urochloa decumbens and Urochloa ruziziensis) sown between rows of corn in the V4 stage. The following... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: No-tillage system; Crop-livestock integration; Crop rotation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001201143 |
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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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| Caires,Eduardo Fávero; Feldhaus,Itacir Cesar; Barth,Gabriel; Garbuio,Fernando José. |
| Root growth and crop yield can be affected by chemical modifications of the soil profile owing to lime and gypsum applications. A field trial was carried out on a dystrophic Clayey Rhodic Hapludox at Ponta Grossa, PR, Brazil, aiming to evaluate lime (without or with incorporation into the soil) and gypsum effects on root growth, mineral nutrition and grain yield of wheat (cv. OR 1). A randomized complete block design was used, with three replications, in a split-plot experiment. Treatments with dolomitic limestone (without lime and 4.5 t ha-1 of lime applied on the surface, in total rate and 1/3 of the requirement per year during 3 years, or incorporated into the soil) were applied in July 1998 (main plots) and the rates of gypsum (0, 3, 6 and 9 t ha-1) in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Root growth; Calcium; Sulphur; No-tillage system. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000200023 |
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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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| 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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| Barbosa, Giselle Feliciani; UNESP; Arf, Orivaldo; UNESP; Nascimento, Martha Santana do; UNESP; Buzetti, Salatiér; UNESP; Freddi, Onã da Silva; UNESP. |
| Mesmo sendo uma planta capaz de realizar a fixação de nitrogênio em simbiose com o Rhizobium, várias pesquisas mostram que a fixação não supre as necessidades do feijoeiro em relação a esse nutriente. A aplicação de molibdênio visa melhorar a simbiose Rhizobium-feijoeiro, pela importância no metabolismo desse nutriente, e pode, com isso, diminuir a aplicação de fertilizantes nitrogenados. Assim, o objetivo do trabalho foi avaliar a resposta do feijão de inverno irrigado, em sistema plantio direto, a doses crescentes de nitrogênio em cobertura (zero, 30, 60, 90 e 120 kg há-1) e sua interação com a adubação molíbdica foliar (zero e 80 g há-1). O delineamento experimental foi o de blocos casualizados dispostos em esquema fatorial 5 x 2, com quatro repetições.... |
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Palavras-chave: 5.01.00.00-9 Agronomia Phaseolus vulgaris L.; Adubação; Plantio direto Fitotecnia Phaseolus vulgaris L.; Fertilization; No-tillage system. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1605 |
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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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| Barbosa,Julierme Zimmer; Ferreira,Carla Fernanda; Santos,Nicolas Zendonadi dos; Motta,Antonio Carlos Vargas; Prior,Stephen; Gabardo,Juarez. |
| ABSTRACT Changes in quantity and quality of corn crop stover can have a large impact on soil conservation and soil carbon (C) sequestration over large areas. The aim of this study was to evaluate changes in production, concentration and amount of C and nitrogen (N) in corn stover fractions due to cultivar development. Two field experiments were conducted in the city of Rolândia (Paraná State, Brazil) using ten cultivars representing five technological levels: single cross hybrids, double or triple hybrids, commercial varieties, and creole cultivars. Plant heights and stalk, leaf, cob, husk and tassel weights were determined at final harvest. Elemental C and N analyses were performed in triplicate for each stover fraction. In general, the creole cultivars... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: C/N ratio; Genetic breeding; No-tillage system; Integrated crop-livestock systems; Renewable energy. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000600665 |
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| Registros recuperados: 36 | |
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