Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 21
Primeira ... 12 ... Última
Imagem não selecionada

Imprime registro no formato completo
EFFECT OF DIFFERENT LEVELS OF NPK AND MICRONUTRIENT ON YIELD AND DISTRIBUTION OF NUTRIENTS IN MAIZE UNDER IRRIGATED AGRICULTURE CIGR Journal
El-Fouly, Mohamed Mostafa; Shaaban, Samir Hosni.
A field experiment was carried out in Kafer El Kadera village at El–Monofia Governorate, during 5 consecutive years, 2010–2014, to test the effects of NPK and balanced fertilization on the yield and its components, and distribution of nutrients in different parts of maize (var.30K8).There was a significant increase of the number of leaves/plant, the length of cob, the number of rows in the cob and the number of grains in the row as a result of treated plants with NPK according to soil testing plus foliar application of micronutrients by 34.18, 27.94, 32.182, and 33.43%, respectively.There was also a significant increase in the chilling % rate, weight of 100 grains and yield of grain / plant, yield /ton/ha by 16.52, 35.39, 68.40, and 72.92%,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Maize; NPK fertilization; Nutrients distribution; Irrigated agriculture.
Ano: 2021 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5463
Imagem não selecionada

Imprime registro no formato completo
Water type and irrigation time effects on microbial metabolism of a soil cultivated with Bermuda-grass Tifton 85 BABT
Nogueira,Sandra Furlan; Paula,Alessandra Monteiro de; Pereira,Bruno Fernando Faria; Salemi,Luiz Felippe; Fonseca,Adriel Ferreira da; Montes,Célia Regina; Victoria,Reynaldo Luiz.
This study investigated the microbial metabolism in Bermuda-grass Tifton 85 areas after potable-water and effluent irrigation treatments. The experiment was carried out in Lins/SP with samples taken in the rainy and dry seasons (2006) after one year and three years of irrigation management, and set up on an entirely randomized block design with four treatments: C (control, without irrigation or fertilization), PW (potable water + 520 kg of N ha-1 year-1); TE3 and TE0 (treated effluent + 520 kg of N ha-1 year-1) for three years and one year, respectively. The parameters determined were: microbial biomass carbon, microbial activity, and metabolic quotient. Irrigation with wastewater after three years indicated no alteration in soil quality for C and ET3; for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reuse; Irrigated agriculture; Microbial respiration; Cmic; QCO2.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000300007
Imagem não selecionada

Imprime registro no formato completo
Irrigation technology in South Africa and Kenya Ciência Rural
Monteiro,Rodrigo Otávio Câmara; Kalungu,Jokastah Wanzuu; Coelho,Rubens Duarte.
This paper reviews various irrigation technologies in both South Africa and Kenya that enable improvements in their socio-economic conditions. The two countries are located in semi-arid areas that experience extreme fluctuations in the availability of rain water for plant growth. Population growth exceeds the ability to produce food in numerous countries around the world and the two countries are not an exception. This experiment examined the constraints that farmers face and the role of government and nongovernmental organization in the uptake of modern technologies for irrigation. Detailed mechanisms and options to secure sustainable irrigation which are economically viable are considered. Despite the higher production of cereals and grains, fruits, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irrigation dissemination; Irrigated arid and semi-arid regions; Irrigated agriculture.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010001000028
Imagem não selecionada

Imprime registro no formato completo
Cadastral maps of irrigated areas by center pivots in the State of Minas Gerais, using CBERS-2B/CCD satellite imaging REA
Ferreira,Elizabeth; Toledo,Joice H. de; Dantas,Antonio A. A.; Pereira,Rafael M..
Medium-resolution satellite images have been widely used for the identification and quantification of irrigated areas by center pivot. These areas, which present predominantly circular forms, can be easily identified by visual analyses of these images. In addition to identifying and quantifying areas irrigated by center pivot, other information that is associated to these areas is fundamental for producing cadastral maps. The goal of this work was to generate cadastral mapping of areas irrigated by center pivots in the State of Minas Gerais, Brazil, with the purpose of supplying information on irrigated agriculture. Using the satellite CBERS2B/CCD, images were used to identify and quantify irrigated areas and then associate these areas with a database...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irrigated agriculture; Remote sensing; Geographic information system (GIS); Image visual interpretation.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162011000400015
Imagem não selecionada

Imprime registro no formato completo
Zoneamento pedoclimático da área de influência do canal das vertentes litorâneas da Paraíba: potencial de terras para irrigação. Infoteca-e
ARAUJO FILHO, J. C. de; MARQUES, F. A.; SANTOS, J. C. P. dos; PARAHYBA, R. da B. V.; AMARAL, A. J. do; OLIVEIRA NETO, M. B. de; SILVA NETO, L. de F. da.
A área de influência do canal das vertentes litorâneas da Paraíba (Canal Acauã-Araçagi) possui uma extensão de 5.144 km2, e a maior parte dessa área está inserida nos domínios do Semiárido. O objetivo deste estudo foi avaliar o potencial de terras para irrigação da referida área por meio de uma metodologia desenvolvida neste trabalho. Para estabelecer as classes de terra para irrigação, foi utilizado o Sistema Brasileiro de Classificação de Terras para Irrigação (SiBCTI) com o apoio de um levantamento de solos na escala 1:50.000. O potencial de terras para irrigação foi obtido por meio de regras inéditas de decisão levando em conta as proporções das diferentes classes de terra nas unidades de mapeamento de solos. Foram avaliados o potencial geral de terras...
Tipo: Livros Palavras-chave: Agricultura Irrigada; Semiárido; Paraíba; Irrigated agriculture; Zoneamento Agrícola; Irrigação; Uso da Terra; Reconhecimento do Solo; Zoning; Irrigation; Land use; Soil surveys; Semiarid zones.
Ano: 2021 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1132908
Imagem não selecionada

Imprime registro no formato completo
O estalelecimento de tarifas de agua e capacidade de pagamento dos colonos na agricultura irrigada do submedio Sao Francisco. Infoteca-e
LIMA, R. C.; FERREIRA IRMAO, J.; CORREIA, R. C.; COELHO, F. C..
Este trabalho investiga o sistema de estabelecimento de tarifas de água na agricultura irrigada do São Francisco e, em particular, a capacidade de pagamento das tarifas de água pelos colonos do Perímetro de Irrigação Senador Nilo Coelho (PISNC). O PISNC se localiza no pólo de irrigação Petrolina-Juazeiro e é a área do Vale do São Francisco mais beneficiada com investimentos em infra-estrutura de irrigação. Tem se destacado como o grande produtor de culturas irrigadas, concentrando cerca de 66,0% do total da área irrigada do Sub-rnédio São Francisco.
Tipo: Parte de livro Palavras-chave: Agricultura irrigada; Colono; Tarifa de agua; Pagamento; Submedio Sao Francisco; Projeto Senador Nilo Coelho; Agricultural economic; Irrigated agriculture; Tenant-farmer; Economia Agrícola; Tariffs.
Ano: 2000 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134323
Imagem não selecionada

Imprime registro no formato completo
Introducing Different Land Uses (Irrigated and Non-Irrigated) in Policy Analysis Modelling for Mediterranean Countries AgEcon
Casado, Jose Maria; Gracia, Azucena.
The arable crop sector in Spain is highly dependent of the Community subsidies and account for 33% of total transfers received by the Community. Then, it is expected that the introduction of the Single Farm Payment (SFP) will drive important changes in the arable crop production in Spain. The quantitative assessment of the SFP impacts on the arable crop sector in Spain is the overall objective of this paper. To achieve this goal, an econometric, dynamic, multi-product and partial equilibrium commodity model has been built disaggregating between irrigated and non-irrigated land use for cereals called Spanish Econometric Simulation of Agricultural Policies (SESAP). Results indicated that the introduction of the SFP has only induced considerable changes...
Tipo: Conference Paper or Presentation Palavras-chave: CAP reform; Partial equilibrium model; Policy modelling; Irrigated agriculture; Simulation; Land Economics/Use; Q12; Q18.
Ano: 2006 URL: http://purl.umn.edu/25709
Imagem não selecionada

Imprime registro no formato completo
ANÁLISE DA VIABILIDADE SÓCIO-AMBIENTAL DA FRUTICULTURA IRRIGADA NO BAIXO JAGUARIBE, CEARÁ AgEcon
Pinheiro, Jose Cesar; Amaral, Cecilia Reis.
A fruticultura irrigada é uma atividade que vem crescendo no Estado do Ceará, sobretudo em certas regiões favoráveis do Estado. Entre estas regiões encontra-se o Baixo Jaguaribe, onde diversas empresas exploram a fruticultura irrigada e procurou-se, nesta pesquisa, avaliar os aspectos sociais e ambientais da atividade. Os aspectos sociais foram avaliados através de entrevistas com funcionários das empresas produtoras de frutas na região e estas abrangeram aspectos como: serviços de educação e saúde nos municípios de residência, habitação, aspectos sanitários, posse de bens duráveis e emprego. Os aspectos e cuidados ambientais das empresas foram avaliados com base em entrevistas com os técnicos responsáveis das empresas por este setor. Foram abordados nas...
Tipo: Conference Paper or Presentation Palavras-chave: Agricultura Irrigada; Fruticultura; Desenvolvimento Sustentável; Irrigated agriculture; Irrigated fruit cultivation; Sustainable development1; Crop Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/109530
Imagem não selecionada

Imprime registro no formato completo
Agricultural Water Demand in Guadalquivir River (2005 Value vs. 2015 Scenario) AgEcon
Mesa-Jurado, Maria A.; Berbel, Julio; Piston, Juan Maximo.
This paper reviews the application of a scenario for the 2015 agricultural policy and markets for the irrigated agriculture in Europe. Scenarios for irrigated agriculture 2015 are described in detail including Reformed CAP and how biofuel impacts demand. A model for irrigation water demand is applied at the basin level for the Guadalquivir River (Southern Spain). The methodology is based upon residual value of water and it combines budget and farm analysis at municipality level, with the Guadalquivir basin divided at 50 counties where 24 possible crops are selected and adapted specifically to each county yield and costs. The result is a comparative analysis between actual level of water use and value, and 2015 scenario at county level and later aggregated...
Tipo: Conference Paper or Presentation Palavras-chave: Irrigated agriculture; Value of water; Scenario analysis; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/43857
Imagem não selecionada

Imprime registro no formato completo
Valoracion del agua de riego por el metodo de precios quasi-hedonicos: aplicacion al Guadalquivir AgEcon
Berbel, Julio; Mesa, Pascual.
La estimación del valor del agua puede hacerse mediante diferentes métodos, de los cuales este trabajo propone el método de precios "quasi-hedónicos". El agua se considera en este trabajo como una variable externa que impacta en el precio diferencial de la tierra, y cuyo valor estimamos para la Cuenca del Guadalquivir. Los resultados nos muestran un valor capital del agua en el rango 2,8 €/m3 a 4,2 €/m3 con un valor más frecuente de 3,46 €/m3, que según el tipo de capitalización empleado nos daría un valor medio de renta del agua entre 0,14 €/m3 (para r=4%) a 0,35 €/m3 (para r=10%). ABSTRACT The valuation of natural resources is a tool used for improving allocation and management of water resources. This research proposes a quasi-hedonic approach as a...
Tipo: Journal Article Palavras-chave: Irrigated agriculture; Hedonic price; Environmental valuation; Water value; Agricultura de riego; Precios hedónicos; Valoracion ambiental; Valor del agua; Resource /Energy Economics and Policy; Q25; C13.
Ano: 2007 URL: http://purl.umn.edu/7059
Imagem não selecionada

Imprime registro no formato completo
The impact of reforming the Common Agricultural Policy on the sustainability of the irrigated area of Central Italy. An empirical assessment by means of a Positive Mathematical Programming model AgEcon
Cortignani, Raffaele; Severini, Simone.
The Common Agricultural Policy (CAP) is a major driver of the environmental and social sustainability of the agriculture in the European Union (EU). Under the 2003 CAP reform, most direct payments to agricultural producers were decoupled from production. This work assesses the possible impact of the CAP reform on the sustainability of an irrigated area of Central Italy with particular attention being paid to decoupling. The analysis has been conducted using the Positive Mathematical Programming (PMP) method that directly estimates the cost function parameters by imposing the first-order conditions of the farm model under consideration. The analysis assesses the impact of the CAP reform on farm cropping patterns, water and chemical use, labour use and...
Tipo: Conference Paper or Presentation Palavras-chave: Common Agricultural Policy; Sustainability; Positive Mathematical Programming; Farmers’ behaviour; Irrigated agriculture; Decoupling; Agricultural and Food Policy; Consumer/Household Economics; Crop Production/Industries; Demand and Price Analysis; Farm Management; Land Economics/Use.
Ano: 2010 URL: http://purl.umn.edu/109318
Imagem não selecionada

Imprime registro no formato completo
Opinion publica sobre la multifuncionalidad del regadío: el caso de Castilla y Leon AgEcon
Gomez-Limon, Jose Antonio; Gomez-Ramos, Almudena.
This paper analyses the demands from the society of Castilla y León (Spain) regarding its agricultural sector through the valuation of the relevance of its productive and non-productive functions. Additionally, it assesses the level of social satisfaction concerning the performance of these functions by irrigated agriculture in this region. For this purpose primary data colleted through a survey has been used. Results obtained show that the average citizen does not perceive a higher utility from irrigated agriculture compared with the whole agricultural sector. For these agricultural systems the social function is the element of multifunctionality considered most relevant regarding the perceived social welfare. Resumen Este trabajo analiza las demandas...
Tipo: Journal Article Palavras-chave: Multifunctionality; Social demand; Irrigated agriculture; Public perception; Castilla y Leon; Crop Production/Industries; Q25; Q15.
Ano: 2007 URL: http://purl.umn.edu/8001
Imagem não selecionada

Imprime registro no formato completo
IMPLAN UNDERSTATES AGRICULTURAL INPUT-OUTPUT MULTIPLIERS: AN APPLICATION TO POTENTIAL AGRICULTURAL/GREEN INDUSTRY DROUGHT IMPACTS IN COLORADO AgEcon
McKean, John R.; Spencer, William P..
Synthesized input-output models are widely used by industry and government economists. The IMPLAN program is popular because it provides user access to the base data so that modifications can be made. The Washington survey-based model and IMPLAN for Washington State are compared, and differences in multipliers are traced to differences in final payments leakages. An adjustment technique for IMPLAN is demonstrated. An application is made to a Colorado potential drought impact analysis. More than 51,000 part- and full-time jobs and $1.6 billion of household income are at stake in the Colorado farm and "green industry" sectors.
Tipo: Journal Article Palavras-chave: Drought; Economic impact; Green industry; IMPLAN; Input-output; Irrigated agriculture; Community/Rural/Urban Development.
Ano: 2003 URL: http://purl.umn.edu/14669
Imagem não selecionada

Imprime registro no formato completo
Turning Water into Carbon: Carbon sequestration vs. water flow in the Murray-Darling Basin AgEcon
Schrobback, Peggy; Adamson, David; Quiggin, John C..
Large scale forest plantations in the Murray-Darling Basin may be embraced as a carbon sequestration mechanism under a Carbon Pollution Reduction Scheme. However, increased tree plantation will be associated with reduced inflows to river systems because of increased transpiration, interception and evaporation. Therefore, an unregulated change in land management is most likely to have a dramatic impact on the water availability. This will exacerbate the impacts of climate change projected in the Garnaut Review. This paper examines the implications of unrestricted changes in land use. These results should suggest the true costs to society from carbon sequestration by determining the tradeoffs between timber production and agricultural products.
Tipo: Conference Paper or Presentation Palavras-chave: Murray-Darling Basin; Carbon sequestration; Forest plantation; Irrigated agriculture; Water flow; Trade-off; Resource /Energy Economics and Policy; Environmental Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/47616
Imagem não selecionada

Imprime registro no formato completo
ALTERNATIVE APPROACHES ON CONSTRUCTING A COMPOSITE INDICATOR TO MEASURE AGRICULTURAL SUSTAINABILITY AgEcon
Gomez-Limon, Jose Antonio; Riesgo, Laura.
The aim of this paper is to carry out a comparative analysis of alternative methods on constructing composite indicators to measure global sustainability of the agricultural sector. This comparison is implemented empirically on the irrigated agriculture of the Duero basin (Spain) as a case study. For this purpose, this research uses a dataset of indicators previously calculated for different farm-types and policy scenarios. The results allow to establish a hierarchy of the policy scenarios on the basis of the level of sustainability achieved. Furthermore, analyzing the heterogeneity of different farms-types in each scenario, is also possible to determine the main features of the most sustainable farms in each case. All this information is useful in order...
Tipo: Conference Paper or Presentation Palavras-chave: Sustainability; Composite Indicators; Irrigated agriculture; Scenarios; Agricultural policy; Agricultural and Food Policy; Environmental Economics and Policy; Research Methods/ Statistical Methods.
Ano: 2008 URL: http://purl.umn.edu/6489
Imagem não selecionada

Imprime registro no formato completo
Irrigation Water Value Scenarios for 2015: Application to Guadalquivir River AgEcon
Mesa-Jurado, Maria A.; Piston, Juan Maximo; Giannoccaro, Giacomo; Berbel, Julio.
This paper reviews the application of a scenario for the 2015 agricultural policy and markets for the irrigated agriculture in Europe. Scenarios for irrigated agriculture 2015 are also described in detail including Reformed CAP and biomass demand. It is applied at the basin level for the Guadalquivir River in southern Spain. The methodology is based upon residual value of water and it combines budget and farm analysis at municipality level, with the Guadalquivir basin divided at 50 ‘comarcas’; in each of them 24 possible crops are selected with specific ‘comarca’ data bases. The 2015 scenario studies the present level of water use and value, and makes an analysis for 2015.This model allows the knowledge of water value and irrigated agriculture at ‘comarca’...
Tipo: Conference Paper or Presentation Palavras-chave: Water pricing; Irrigated agriculture; Value of water; Scenario analysis; Agricultural and Food Policy; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/6450
Imagem não selecionada

Imprime registro no formato completo
Soil Compressibility under Irrigated Perennial and Annual Crops in a Semi-Arid Environment Rev. Bras. Ciênc. Solo
Watanabe,Rafaela; Figueiredo,Getulio Coutinho; Silva,Álvaro Pires da; Neves,Júlio César Lima; Oliveira,Teogenes Senna de.
ABSTRACT In irrigated soils, a continuous state of high moisture reduces resistance of the soil to applied external forces, favouring compaction. The aim of this study was to evaluate the susceptibility to compaction of developed calcareous soils in irrigated annual and perennial cropping systems of the Apodi Plateau, located in the Brazilian semi-arid region. Four areas of irrigated crops were evaluated: banana after two (B2) and 15 (B15) years cultivation, pasture (P), and a corn and beans succession (MB), as well as the reference areas for soil quality and corresponding natural vegetation (NVB2, NVB15, NVP and NVMB). Samples were collected at layers of 0.00-0.10 and 0.20-0.30 m; and for B2 and B15, samples were collected in the row and inter-row spaces....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irrigated agriculture; Soil quality; Load capacity; Trampling by animals.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100522
Imagem não selecionada

Imprime registro no formato completo
Sugarcane spatial-temporal monitoring and crop coefficient estimation through NDVI AGRIAMBI
Alface,Angelo B.; Pereira,Silvio B.; Filgueiras,Roberto; Cunha,Fernando F..
ABSTRACT The use of satellite images as a complement in irrigation management constitutes a primordial basis in the decision-making process for irrigated agriculture. In this context, the present study aimed to monitor through Normalized Difference Vegetation Index (NDVI) an irrigated sugarcane field belonging to the Mafambisse company, located at the District of Nhamatanda/Sofala, Republic of Mozambique, and establish its relationship with the crop coefficient established by FAO (kcFAO) and fit a regression model to estimate crop coefficient (kc) from the relationship between NDVI and kcFAO. The study was conducted using a series of Sentinel-2A/MSI images, relative to the period from October 2016 to October 2017. Based on the NDVI images generated, it was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irrigated agriculture; Geotechnology; GIS.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000500330
Imagem não selecionada

Imprime registro no formato completo
Reference evapotranspiration estimation by the Irrigameter in Southern Tocantins State, Brazil AGRIAMBI
Giovanelli,Luan B.; Oliveira,Rubens A.; Oliveira-Filho,Jair C.; Baptestini,Júlio C. M.; Delazari,Fábio T.; Sediyama,Gilberto C..
ABSTRACT The choice for the most appropriate method to estimate evapotranspiration depends on the availability of meteorological data, required level of precision and cost of equipment acquisition. For this estimate, the Irrigameter is simple to operate, precise and economically viable to farmers. In addition, it collaborates in the application of the necessary water depth to crops, thus avoiding unnecessary energy consumption, environmental degradation, and increasing crop yield and improving crop quality. In this context, the objective of this research was to estimate the reference evapotranspiration using the Irrigameter, for the climatic conditions of the Southern Tocantins state, Brazil. The experimental design was completely randomized with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irrigation management; Irrigated agriculture; Evaporator.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000500293
Imagem não selecionada

Imprime registro no formato completo
Use of PVC pipes to determine bulk density for irrigation management Rev. Ciênc. Agron.
Matsinhe,Daniel Zefanias; Pereira,Silvio Bueno; Oliveira,Rubens Alves de; Assis,Igor Rodrigues de; Oliveira,Reginaldo Miranda.
ABSTRACT Irrigation has a great importance in the production of food, and it is responsible for consuming a large part of the water used by human activities. This makes the rational management of water use fundamental for sustainable food production. For this purpose, the determination of bulk density is important and needs to be obtained with the simplest, least onerous methods possible, while maintaining precision and accuracy. Therefore, the objective of this work was to evaluate the use of PVC pipes of different dimensions to determine bulk density. For comparison purposes, the volumetric ring, paraffin clod, beaker and excavation methods were also used. Deformed and undisturbed soil samples of different granulometries were collected at the depths of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water use; Irrigated agriculture; Soil management.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000100027
Registros recuperados: 21
Primeira ... 12 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional