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| Registros recuperados: 44 | |
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| Ferreira,Paulo Ademar Avelar; Girotto,Eduardo; Trentin,Gustavo; Miotto,Alcione; Melo,George Wellington de; Ceretta,Carlos Alberto; Kaminski,João; Frari,Bianca Knebel Del; Marchezan,Carina; Silva,Lincon Oliveira Stefanello; Faversani,Jéssica Carolina; Brunetto,Gustavo. |
| A significant quantity of nutrients in vineyards may return to the soil each year through decomposition of residues from cover plants. This study aimed to evaluate biomass decomposition and nutrient release from residues of black oats and hairy vetch deposited in the vines rows, with and without plastic shelter, and in the between-row areas throughout the vegetative and productive cycle of the plants. The study was conducted in a commercial vineyard in Bento Gonçalves, RS, Brazil, from October 2008 to February 2009. Black oat (Avena strigosa) and hairy vetch (Vicia villosa) residues were collected, subjected to chemical (C, N, P, K, Ca, and Mg) and biochemical (cellulose - Cel, hemicellulose - Hem, and lignin - Lig content) analyses, and placed in litter... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cover crops; Nutrient cycling; Plastic shelter; Vitis sp. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500027 |
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| Nascente,A.S.; Guimarães,C.M.; Cobucci,T.; Crusciol,C.A.C.. |
| The correct management of cover crops in no-tillage aims to obtain greater benefits with its introduction in agricultural systems. The use of forage species such as Brachiaria, due to the large amount of biomass and for persisting longer on the ground, has become a good option. In this sense, an important point is the time interval between the cover desiccation with glyphosate and planting of rice in order to obtain higher operating income in the sowing, greater availability of nutrients, greater presence of straw on the soil surface, and lower release of possible allelopathic substances. The objective of this study was to assess the effect of the management of B. ruziziensis, with or without herbicide, preceding the crop planting, in the yield components... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil management; Straw; Cover crops; No tillage system; Glyphosate. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000400006 |
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| GARCIA, R. A.; MACHADO, L. A. Z.. |
| O consórcio de braquiária com crotalária na entressafra é uma alternativa para produção de fitomassa no Sistema Plantio Direto, com aumento na produtividade da soja em sucessão. O experimento foi conduzido na Embrapa Agropecuária Oeste, Dourados, Mato Grosso do Sul. Na entressafra de 2017, 2018 e 2019, foi cultivada Brachiaria solteira ou consorciada com Crotalaria juncea, C. spectabilis ou C. ochroleuca. A soja foi conduzida no verão nas safras 2017/2018 e 2018/2019. Utilizou-se o método da linha intercalar, com espaçamento entrelinhas entre espécies de 45 cm. A gramínea solteira teve espaçamento entrelinhas de 45 cm. A semeadura do consórcio foi em uma única operação, com as sementes de braquiária depositadas na terceira caixa, enquanto as de crotalária... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Cultivo consorciado; Planta de Cobertura; Leguminosa; Gramínea; Brachiaria; Crotalária; Intercropping; Cover crops; Grasses; Soybeans. |
| Ano: 2019 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1118531 |
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| Rocha,Omar Cruz; Ramos,Maria Lucrécia Gerosa; Veiga,Adriano Delly; Guerra,Antonio Fernando; Bartholo,Gabriel Ferreira; Rodrigues,Gustavo Costa; Silva,Juliano Escobar da. |
| Abstract The objective of this work was to evaluate the effect of irrigation and of the presence of brachiaria (Urochloa decumbens) between coffee (Coffea arabica) rows on coffee yield and on chemical and hydrophysical attributes of a Typic Haplustox. The study was conducted in the Cerrado region in Planaltina, Brasília, DF, Brazil, in a randomized complete block design, arranged in split-split plots, with four replicates. Water regimes (irrigated or rainfed) were assigned to the main plots, inter-row management systems to the subplots, and soil layers to the sub-subplots. The following soil attributes were determined: total organic carbon, total nitrogen, C/N ratio, carbon and nitrogen stocks, bulk density, aggregate stability, total porosity,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica; Urochloa decumbens; Cover crops; Soil physical quality; Soil porosity; Water availability. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901476 |
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| GARCIA, R. A.; SILVA, C. A. da. |
| O consórcio de milho com uma leguminosa é uma alternativa para diversificar o sistema de produção. Objetivou-se com este trabalho avaliar a produtividade do milho e a produção de biomassa de Crotalaria juncea, C. ochroleuca e C. spectabilis consorciada com a cultura granífera. O experimento foi conduzido nas entressafras de 2017, 2018 e 2019 na Embrapa Agropecuária Oeste, em Dourados, Mato Grosso do Sul. Utilizou-se o método de linha intercalar. O milho solteiro, a 90 cm, foi utilizado como testemunha. A semeadura dos consórcios foi realizada em uma única operação, com a semente da crotalária depositada na terceira caixa. A produção de fitomassa das crotalárias foi avaliada por ocasião do florescimento do milho e na pré-colheita. A produtividade do milho... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Planta de Cobertura; Leguminosa; Crotalária; Cover crops. |
| Ano: 2019 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1118911 |
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| Balbinot Junior,Alvadi Antonio; Santos,Julio Cezar Franchini Dos; Debiasi,Henrique; Yokoyama,Anderson Hideo. |
| Abstract: The objective of this work was to evaluate the effect of roots and straw of palisade grass (Urochloa brizantha) and Ruzi grass (U. ruziziensis), used as cover crops in autumn-winter, on soybean performance. Seven treatments were evaluated in a randomized complete block design, with four replicates: fallow, during autumn-winter; straw of U. ruziziensis or U. brizantha 'BRS Piatã', distributed in plots kept under fallow in the winter, without roots; plots only with roots of U. ruziziensis or U. brizantha, without straw; and plots with straw and roots of U. ruziziensis or U. brizantha. The grass species were planted during the 2014/2015 crop season, and treatments were evaluated at the end of the 2015/2016 crop season, without drought during the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Urochloa brizantha; Urochloa ruziziensis; Cover crops; No-tillage.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000800592 |
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| Marcelo,Adolfo Valente; Corá,José Eduardo; Fernandes,Carolina; Martins,Márcio dos Reis; Jorge,Ricardo Falqueto. |
| Decomposing crop residues in no-tillage system can alter soil chemical properties, which may consequently influence the productivity of succession crops. The objective of this study was to evaluate soil chemical properties and soybean, maize and rice yield, grown in the summer, after winter crops in a no-tillage system. The experiment was carried out in Jaboticabal, SP, Brazil (21 ° 15 ' 22 '' S; 48 ° 18 ' 58 '' W) on a Red Latosol (Oxisol), in a completely randomized block design, in strip plots with three replications. The treatments consisted of four summer crop sequences (maize monocrop, soybean monocrop, soybean/maize rotation and rice/bean/cotton rotation) combined with seven winter crops (maize, sunflower, oilseed radish, pearl millet, pigeon pea,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Winter crops; Crop rotation; Cover crops; Soil management. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000200019 |
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| Tiecher,Tales; Santos,Danilo Rheinheimer dos; Kaminski,João; Calegari,Ademir. |
| The cultivation of crops with different capacity of P uptake and use under long-term soil tillage systems can affect the distribution of P cycling and inorganic forms in the soil, as a result of higher or lower use efficiency of P applied in fertilizers. The purpose of this study was to evaluate the effect of long-term cultivation of different winter species under tillage systems on the distribution of inorganic P forms in the soil. In 1986, the experiment was initiated with six winter crops (blue lupin, hairy vetch, oat, oilseed radish, wheat and fallow) on a Rhodic Hapludox in southwestern Paraná, under no-tillage (NT) and conventional tillage (CT). The application of phosphate fertilizer in NT rows increased inorganic P in the labile and moderately... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: No tillage; Conventional tillage; Lability; Phosphorus fractionation; Cover crops; Soil management. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000100028 |
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| 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 |
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| Registros recuperados: 44 | |
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