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Adoption of Cover Crops and Its Effect on Nitrogen Use by Farmers AgEcon
Gabrielyan, Gnel; Chintawar, Sachin; Westra, John V..
With increasing environmental concerns, increasing population, changing tastes and preferences of consumers towards healthier foods, and with more food safety requirements, agronomic practices have changed gradually to provide not only food and fiber but also public goods and other beneficial services from agriculture. Cover cropping is one type of technology increasingly being adopted by producers of multifunctional agriculture. Cover crops provide a range of benefits, both private and public. In this paper we identify factors affecting farmers’ choice to adopt cover crops. We examine the impact on nitrogen use from adopting cover crops and the resultant decrease in input costs. Using a two-stage approach that incorporates endogeneity of adoption in...
Tipo: Conference Paper or Presentation Palavras-chave: Cover crops; Nitrogen usage; Technology adoption; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Production Economics; Risk and Uncertainty.
Ano: 2010 URL: http://purl.umn.edu/56520
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Adubos verdes: efeitos no rendimento e no nitrogenio do milho em plantio direto e convencional. Infoteca-e
CARVALHO, A. M. de; CARNEIRO, R. G.; AMABILE, R. F.; SPERA, S. T.; DAMASO, F. H. M..
bitstream/item/75916/1/bolpd-07.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Maize; Zero tillage; Crop sucession; Direct sowing; Dry watter; Espécies de cobertura; Green manure; No tillage; Production; Sucessão de cultivos; Sucessão de cultura.; Adubo Verde; Cerrado; Matéria Seca; Milho; Nitrogênio; Produção; Plantio Direto; Rendimento; Zea Mays.; Cover crops; Green manures; Crop yield; Nitrogen; Sequential cropping..
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/555406
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Biomass decomposition and nutrient release from black oat and hairy vetch residues deposited in a vineyard Rev. Bras. Ciênc. Solo
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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Brachiaria as a Cover Crop to Improve Phosphorus Use Efficiency in a No-till Oxisol Rev. Bras. Ciênc. Solo
Janegitz,Moniki Campos; Souza,Elialdo Alves de; Rosolem,Ciro Antonio.
ABSTRACT Oxidic soils are phosphorus drains in soil; hence, P availability is a limiting factor in tropical, weathered Oxidic soils. It has been shown that some brachiarias grown as cover crops may increase soil available P to subsequent crops. The objective of this study was to evaluate soil P cycling and availability, as well as the response of soybean to soluble and natural reactive phosphates as affected by ruzi grass (Urochloa ruziziensis, R. Germ. and C.M. Evrard, Crin) grown as a cover crop in a no-till system. Experimental treatments consisted of the presence or absence of ruzi grass in combination with a control (0.0 P) and soluble and reactive rock phosphate broadcast on the soil surface in the winter (80 kg ha-1 P2O5), plus three rates of P...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Available phosphorus; Phosphorus use efficiency; Cover crops.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100536
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Brachiaria ruziziensis and herbicide on the yield of upland rice Planta Daninha
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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Braquiária com crotalária na entressafra: efeito positivo na soja em sucessão. Infoteca-e
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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Chemical and hydrophysical attributes of an Oxisol under coffee intercropped with brachiaria in the Cerrado PAB
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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Composição química e decomposição de plantas de cobertura sob manejo na floração e maturação. Infoteca-e
ALVES, P. C. A. C.; SOUZA, L. L. P. de; CARVALHO, A. M. de.
bitstream/item/78231/1/p2009-066.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Decomposition; Green manure.; Decomposição; Lignina; Planta de Cobertura.; Cover crops; Lignin..
Ano: 2009 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/898298
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Consórcio de milho com crotalária: alternativa para diversificar sistemas de produção. Infoteca-e
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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Contribution of roots and shoots of Brachiaria species to soybean performance in succession PAB
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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Crop sequences in no-tillage system: effects on soil fertility and soybean, maize and rice yield Rev. Bras. Ciênc. Solo
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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Demographic and Management Factors Affecting the Adoption and Perceived Yield Benefit of Winter Cover Crops in the Southeast AgEcon
Bergtold, Jason S.; Duffy, Patricia A.; Hite, Diane; Raper, Randy L..
The inclusion of cover crops in cropping systems brings direct and indirect costs and benefits. Farmers will adopt and utilize cover crops as long as the perceived benefit of using them is positive. This paper examines the demographic and management factors affecting the adoption and perceived benefit (in terms of improved crop yield) of using winter annual cover crops. A double selectivity model of cover crop adoption and perceived yield gain was estimated using survey data of Alabama farmers examining cover crop use and management. Results may help in understanding factors shaping farmers’ perceptions, adoption, and retention of cover crops.
Tipo: Article Palavras-chave: Adoption; Conservation; Cover crops; Double selectivity model; Perceived yield gain; Tobit model; Environmental Economics and Policy; Farm Management; Q12; Q15; Q55.
Ano: 2012 URL: http://purl.umn.edu/120443
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Efeito da composição química na dinâmica de decomposição de resíduos vegetais de plantas de cobertura sob manejo na floração e maturação (2009). Infoteca-e
SOUZA, L. L. P. DE; ALVES, P. C. A. C.; COELHO, M. C.; CAMPOS, R. G.; MARTINS, W.; CARVALHO, A. M. de.
bitstream/item/78152/1/p2009-041.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Plantas de cobertura; Decomposition; Green manure.; Decomposição; Lignina.; Cover crops; Lignin..
Ano: 2009 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/736940
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Effect of 15n-labeled hairy vetch and nitrogen fertilization on maize nutrition and yield under no-tillage¹ Rev. Bras. Ciênc. Solo
Almeida Acosta,José Alan de; Amado,Telmo Jorge Carneiro; Neergaard,Andreas de; Vinther,Mads; Silva,Leandro Souza da; Silveira Nicoloso,Rodrigo da.
This study evaluated the effect of hairy vetch (Vicia villosa Roth) as cover crop on maize nutrition and yield under no tillage using isotope techniques. For this purpose, three experiments were carried out: 1) quantification of biological nitrogen fixation (BNF) in hairy vetch; 2) estimation of the N release rate from hairy vetch residues on the soil surface; 3) quantification of 15N recovery by maize from labeled hairy vetch under three rates of mineral N fertilization. This two-year field experiment was conducted on a sandy Acrisol (FAO soil classification) or Argissolo Vermelho distrófico arênico (Brazilian Soil Classification), at a mean annual temperature of 18 ºC and mean annual rainfall of 1686 mm. The experiment was arranged in a double split-plot...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil conservation; 15N recovery; Cover crops; N uptake.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000400028
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Effect of Cover Crops, Lime and Rock Phosphate on Maize (Zea mays L.) in an Acidic Soil of Northern Guinea Savanna of Nigeria JARTS
Jibrin, J. M.; Chude, V. O.; Horst, W. J.; Amapu, I. Y..
Phosphorus deficiency is the major constraint to maize production in acidic soil of Heipang (9°38’, 8°53’) in Northern Guinea Savanna of Nigeria. The soil is high in sesquioxides and soluble aluminum and has high phosphate sorption capacity. To address this problem, a field trial was conducted between 1996-1997 to assess the responses of six tropical cover crops and maize to lime and applied rock phosphate and to evaluate the effect of these treatments on the performance and P nutrition of succeeding maize. Results of the trial showed that planting Chamaecrista rotundifolia, Lablab purpureus, Mucuna pruriens, and maize-Chamaecrista rotundifolia intercrop reduced the leaf Al concentration of succeeding maize by more than 38%. Although none of the six cover...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plant Production P deficiency; Rock phosphate; Liming; Cover crops; Maize yield.
Ano: 2002 URL: http://www.jarts.info/index.php/jarts/article/view/11
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Effects of Alternative Lime Application Rates on Cotton Profitability with Varying Cover Crops, Nitrogen, and Tillage Methods. AgEcon
Cochran, Rebecca L.; Larson, James A.; Roberts, Roland K.; Tyler, Donald D..
Soil acidity and cotton yields are influenced by cover crop, nitrogen, and tillage method. Applying half the recommended lime rate may be possible without reducing cotton yields. Using a nitrogen intensive cover crop and applying less nitrogen should mitigate the effects on soil acidity and yields.
Tipo: Conference Paper or Presentation Palavras-chave: Cover crops; Cotton; Lime; Nitrogen; Profitability; Soil acidity; Tillage; Crop Production/Industries.
Ano: 2005 URL: http://purl.umn.edu/35569
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Effects of cover crops on soil hydraulic properties and yield in a persimmon orchard Bragantia
Demir,Zeynep; Işık,Doğan.
ABSTRACT This study evaluated the effects of cover crops on yield and soil hydraulic properties of a persimmon orchard in Turkey. Soil samples were taken from 0-20 and 20-40 cm. Profiles of a clay soil and field capacity, permanent wilting point, available water capacity and saturated hydraulic conductivity of the samples were determined. Festuca rubra subsp. rubra, Trifolium repens, Festuca arundinacea, a mixture of them [Trifolium repens (40%) + Festuca rubra rubra (30%) + Festuca arundinacea (30%)], Vicia villosa R., and Trifolium meneghinianum were used as the cover crops. The experiment was conducted in a randomized complete blocks design with four replications including a mechanically cultivated and herbicide treated control plots. The greatest mean...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cover crops; Available water capacity; Saturated hydraulic conductivity; Soil quality; Persimmon orchard.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000400596
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Farmers' Willingness to Grow Cover Crops: Examining the Economic Factors of Adoption in Alabama AgEcon
Bergtold, Jason S.; Fewell, Jason E.; Duffy, Patricia A..
The inclusion of cover crops in cropping systems brings both direct and indirect costs and benefits. The literature has shown that cover crops can improve soil conservation and productivity, potentially improving cash crop yields and decreasing cash crop production costs. Farmers will adopt cover crops if the net economic benefit of utilizing them is positive. This study examines farmers’ willingness to grow cover crops as a soil conservation practice and to examine the socio-economic factors affecting their decision. Survey data collected in 2007-8 from Alabama farmers about cover crop adoption and management is utilized to estimate a cover crop adoption model.
Tipo: Conference Paper or Presentation Palavras-chave: Cover crops; Conservation; Adoption; Generalized ordered logit; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Production Economics.
Ano: 2010 URL: http://purl.umn.edu/61486
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Forms of inorganic phosphorus in soil under different long term soil tillage systems and winter crops Rev. Bras. Ciênc. Solo
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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Gas chromatography and photoacoustic spectroscopy for the assessment of soil greenhouse gases emissions Ciência Rural
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
Registros recuperados: 44
Primeira ... 123 ... Última
 

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