SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

A agricultura irrigada no Nordeste do Brasil: estado da arte, desafios e oportunidades.

BASSOI, L. H..

Palestra 4. Destacando o Zoneamento Agroecológico do Nordeste, Bioma, limitações, desafios e oportunidades para o desenvolvimento da fruticultura irrigada no Nordeste.

Tipo: Resumo em anais de congresso (ALICE)

Palavras-chave: Nordeste; Fruticultura irrigada; Agricultura irrigada; Agricultura; Irrigação; Salinização; Agriculture; Irrigation.

Ano: 2017

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1087737

BASSOI, L. H.; GONDIM, R. S.; RESENDE, R. S.; ANDRADE JUNIOR, A. S. de.

Estado da arte da agricultura irrigada no Nordeste;Caracterização de algumas áreas irrigadas no Nordeste; Sistemas de irrigação em uso no Nordeste; Uso de água pela agricultura irrigada no Nordeste; Mudanças climáticas: pressão adicional sobre os recursos hídricos?; Salinização; Utilização de água subterrâneas; Capacitação do irrigante; Eficiência de uso de água em perímetro irrigados; Cobrança pelo uso da água; Limitações ao desenvolvimento da agricultura irrigada no Nordeste do Brasil; Desafios; Oportunidades; Considerações finais.

Tipo: Capítulo em livro técnico (INFOTECA-E)

Palavras-chave: Agricultura irrigada; Semiárido; Polo de irrigação; Custo da água; Eficiência do uso da água; Irrigante; Colono; Política de irrigação; Água subterrânea; Desenvolvimento regional; Brazilian semiarid; Climat change; Water productivity; Agricultura; Irrigação; Recurso Hídrico; Salinização; Mudança climática; Desenvolvimento Sustentável; Perímetro Irrigado; Política de Desenvolvimento; Sistema de Irrigação; Agriculture; Irrigation; Rural development; Soil water.

Ano: 2017

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1087714

A Closed-Type Irrigation System Performaces in the Plant House

CIGR Journal

Dewi, Vita Ayu Kusuma; Setiawan, Budi Indra; Minasny, Budiman; Wasodo, Roh Santoso Budi; Liyantono, Liyantono.

Water application in the plant house is usually done by surface irrigation and manual micro-irrigation. Because of the conventional irrigation system’s inefficiency, water-saving irrigation has been developed. Smart or automated irrigation usually uses a microcontroller to maintain irrigation timing and soil moisture conditions. This automation is highly efficient in water application and can increase plant productivity. However, this system is costly and the irrigation components are not always available for smallholder farmers. Here we develop an automatic irrigation technology based on the capillarity principle that dramatically reduces the cost. This irrigation technology does not use any microcontroller device and the components can be easily...

A Dynamic Risk Optimization Model for Evaluating Profitable and Feasible Water Management Plans

Palavras-chave: High productivity; Horticulture; Irrigation; Plant house; Water use efficiency.

Ano: 2020

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5981

Grove, Bennie; Oosthuizen, L.K.; Backeberg, G.R..

Currently the South African government is advocating the cultivation of high valued crops and more efficient use of available water resources through the adoption o f more efficient irrigation technology and irrigation scheduling. A requirement of the National Water Act (Act 36 of 1998) is the compilation of water management plans. The main objective of this paper is to develop a multiperiod mathematical risk programming model able of assisting water user associations with the compilation of water management plans that are both profitable and feasible. Special care was taken to represent canal capacities and irrigation system application rates in the model. Risk simulation procedures are used to generate an appropriately correlated inter- and...

Tipo: Conference Paper or Presentation

Palavras-chave: Dynamic Linear Programming; Risk; Irrigation; Feasibility; South Africa; Resource /Energy Economics and Policy; C6; Q15; Q12.

Ano: 2006

URL: http://purl.umn.edu/25554

A GROSS MARGIN COMPARISON OF RETURNS TO NEMATICIDE TREATMENT IN CONTINUOUS AND ROTATION TRITICALE-SOYBEAN PRODUCTION

Stark, C. Robert, Jr.; Dowler, C.C.; Johnson, A.W.; Baker, S.H..

A study of irrigated strip-till soybean production compared gross margins over nematicide expense for a continuous triticale-soybean system versus a two-year rotation system alternating triticale-soybean with triticale-cotton. Half of the replicated plots under each system received nematicide treatment. Gross margins were calculated using recorded yields and Georgia average market prices by marketing years. Mean gross margins for untreated plots were not significantly different between crop-sequence systems. Within each system, however, mean gross margins were significantly higher for plots not receiving nematicide treatment versus treated plots, even when treated plots produced greater yields.

Tipo: Journal Article

Palavras-chave: Conservation tillage; Gross margin; Irrigation; Meloidogyne incognita; Root-knot nematode; Rotation; Soybean; Triticale; Crop Production/Industries.

Ano: 2000

URL: http://purl.umn.edu/14715

A irrigacao de salvacao no tropico Semi-Arido brasileiro atraves de barreiro segmentado: (um estudo de caso).

A model to define operational irrigation frequency for maximum yield of crops.

VALLEE, G. J. A.; CERQUEIRA, P. R. S.; SILVA, A. de S.; LIMA, A. F.; LOPES, L. H. de O.; VIEIRA, V. J. de S..

O Centro de Pesquisa Agropecuaria do Tropico Semi-Arido brasileiro, vem tentando melhorar o sistema de producao das pequenas propriedades do Nordeste serando ou adaptando tecnologias, com o objetivo de torna-las resistentes a seca, e, consequentemente, elevar as condicoes de vida dos agricultores e suas familias para niveis aceitaveis. Para atingir esse objetivo o CPATSA utiliza como Filosofia, que a pesquisa de geracao de tecnologias deve comecar nos agricultores, partindo do conheciment ode sua realidade e terminar nos agricultores, com o teste ao nivel real dessas tecnologias geradas ao nivel controlado. Este documento contem avaliacao da Tecnologia barreiro Segmento para Irrigacao de Salvacao no meio real, implantada na propriedade do Sr. Alves de...

Tipo: Artigo em anais de congresso (ALICE)

Palavras-chave: Irrigacao de salvacao; Nordeste; Tropico semi-arido; Earthn dam; Salvation irrigation; Northeast; Barreiro; Irrigação; Tecnologia; Irrigation; Technology.

Ano: 1988

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/133664

MILLAR, A. A.; CHOUDHURY, E. N..

Se describe un modelo para definir la frecuencia operacional de riego para obtener maxima produccion de los cultivos. El modelo usa como informacion basica la respuesta de la planta e las condiciones de humedad en el suelo, caracteristicas de retencion y movimiento del agua en el suelo, evapotranspiracion y demanda atmosferica. Se presentan los resultados de la aplicacion del modelo en cultivos de tomate y frijol, en un suelo franco arenoso. Se discute el uso de la informacion mundial de la relacion entre rendimiento de los cultivos y el potencial matricial de agua en el suelo.

Tipo: Artigo em periódico indexado (ALICE)

Palavras-chave: Frequencia; Bean; Tomato; Balanço Hídrico; Feijão; Irrigação; Tomate; Frequency; Irrigation; Water balance.

Ano: 1980

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/132547

A necessidade de irrigar o milho.

ALBUQUERQUE, P. E. P. de.

bitstream/item/73151/1/Necessidade-irrigar.pdf

Tipo: Artigo de divulgação na mídia (INFOTECA-E)

Palavras-chave: Irrigação; Irrigation.

Ano: 2012

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/944109

A Nemzeti Vidékstratégia a mezőgazdasági vízgazdálkodás és az öntözésfejlesztés tükrében

Biro, Szabolcs; Kapronczai, Istvan; Szekely, Erika; Szucs, Istvan.

A Nemzeti Vidékstratégiai Koncepció (Vidékfejlesztési Minisztérium, 2011) vitaanyagának előszava a természeti erőforrások felértékelődésére, a természeti környezet védelmére, valamint a mezőgazdaság és a vidék szoros kapcsolatára hívja fel a figyelmet. Ennek tükrében élelmiszerelőállítás csak a talajok, az ivóvízbázisok és a táj fenntartását eredményező, a jó környezeti állapotot és az élővilág sokszínűségét megőrző, valamint a vidéki életformát, a helyi közösségeket és kultúrát megóvó jó minőségű és biztonságos alapanyagokra épülő termelés mellett értelmezhető. Jelen vitacikk a mezőgazdasági vízhasználat vidékstratégiai vonatkozásait kívánja feltárni, felhasználva kutatási eredményeinket1 és figyelembe véve vizsgálataink alapján megfogalmazott...

Tipo: Article

Palavras-chave: Természeti erőforrások; Föld; Öntözés; Klíma; Role of natural resources; Land; Climate change; Irrigation; Agricultural and Food Policy; Environmental Economics and Policy; Production Economics.

Ano: 2011

URL: http://purl.umn.edu/119906

A new methodology for assessing the impact of water-pricing scenarios: case study of small-scale irrigation schemes in South Africa

Speelman, Stijn; Frija, Aymen; Farolfi, Stefano; Buysse, Jeroen; D'Haese, Marijke F.C.; D'Haese, Luc.

Worldwide growing water scarcity has increased the call for economic instruments to stimulate rational water use in agriculture. In addition cost-recovery is now widely accepted as a cornerstone of sustainable water management. As a consequence now in developing countries, where currently agricultural water use is often still heavily subsidized, a tendency exists of introducing water-pricing as a policy to achieve more sustainable water use. The exact impact of water pricing policies on irrigation water use or on the farmers’ production system is however mostly unknown. A new two-stage methodology that allows estimating at the farm level the effects of introducing or raising a water price on the agricultural production process and water demand is...

Tipo: Conference Paper or Presentation

Palavras-chave: Water-pricing; Water savings; Irrigation; Data envelopment analysis; South Africa; Resource /Energy Economics and Policy.

Ano: 2008

URL: http://purl.umn.edu/43836

A nonlinear model for optimization of small reservoir irrigation systems for semi-arid tropics.

A parsimonious crop-water productivity index: an application to Brazil.

SHARMA, P. N.; HELWEG, O. J..

Small reservoir irrigation system optimization: model development; The nonlinear programming algorithm; Results and discussions; Conclusions; Applicability for North-East Brazil.

Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)

Palavras-chave: Reservatório; Irrigação; Água; Irrigation; Water..

Ano: 1982

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/953300

A pecuaria leiteira comparada aos cultivos anuais em areas irrigadas atraves de um modelo de programacao linear.

MANETA, M. P.; SINGH, P. N.; TORRES, M.; WALLENDER, W. W.; VOSTI, S. A.; RODRIGUES, L. N.; BASSOI, L. H.; YOUNG, J. A..

An application to the São Francisco river basin; Site characteristics, data sources and methodology.

Tipo: Artigo em periódico indexado (ALICE)

Palavras-chave: Irrigação; Manejo de água; Produtividade agrícola; Desenvolvimento agrícola; Bacia hidrográfica; Irrigação; Irrigation.

Ano: 2009

URL: http://www.alice.cnptia.embrapa.br/handle/doc/631357

MOREIRA, J. N.; LOPES, G. M. B..

A produção animal tem sido responsável pela manutenção de muitos nordestinos no meio rural. Nas áreas irrigadas, essa atividade não foi pensada inicialmente como parte integrante dos sistemas de produção. Apesar disto, tem-se verificado, associada à irrigação, uma produção pecuária que começa a se fazer presente. Utilizando-se um modelo de programação linear foram feitos alguns experimentos, comparando os cultivos anuais à atividade pecuária. Constatou-se que pode-se obter grandes receitas com ou sem a exploração pecuária. Esta, por sua vez, pode melhor se integrar à agroindústria da região, ampliando as atividades do lote.

Tipo: Artigo em anais de congresso (ALICE)

Palavras-chave: Area de colonizacao; Settlement area; Irrigação; Produção Animal; Sistema de Produção; Animal production; Farming systems; Irrigation.

Ano: 1997

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/132638

A pesquisa do CPATSA nas areas irrigadas do tropico semi-arido: resultados experimentais dos anos 1976/77.

EMBRAPA. Centro de Pesquisa Agropecuaria do Tropico Semi-Arido..

Este documento apresenta, em duas partes, os resultados da pesquisa nos anos de 1976-1977 e a programação para o período de 1978-1979. Projetos das áreas irrigadas, no Projeto de Irrigação São Gonçalo, PB (DNOCS); Nos Projetos Mandacarú, BA; Bebedouro, PE, ambos da CODEVASF, e na estação Experimental de Jatinã, em PE, representando as áreas de aluvião.

Tipo: Outras publicações técnicas (INFOTECA-E)

Palavras-chave: Projeto de Irrigacao; Regiao Semi-Arida; Água; Agricultura; Irrigação; Solo; Manejo; Pesquisa; Agriculture; Irrigation; Research; Soil; Water.

Ano: 1978

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/138386

A socio-economic appraisal of Jaíba irrigation scheme in Southeastern Brasil.

A Stochastic-Dynamic Model of Costly Reversible Technology Adoption

RODRIGUES, L.; BRITO, R.A.; ANDRADE, C. L. T..

1998

Tipo: Artigo em anais de congresso (ALICE)

Palavras-chave: Socio-economia; Irrigacao; Jaiba; Minas Gerais; Brasil; Brazil; Socio-economic; Irrigation.

Ano: 1998

URL: http://www.alice.cnptia.embrapa.br/handle/doc/482977

Baerenklau, Kenneth A.; Knapp, Keith C..

We develop a stochastic-dynamic model of technology adoption that imposes fewer restrictions on behavior than do previous studies of similar decision problems. Like these previous studies, our model is forward-looking and can be used to demonstrate the additional "hurdle rate" that must be met before adoption will take place when the future state of the world is uncertain. Unlike these previous studies, our approach does not impose the untenable assumptions that investment in a new technology is irreversible or that technologies have unlimited useful lifetimes. Rather, we address the more reasonable situation of costly reversibility and limited lifetimes. Our solution method utilizes Bellman's equation and standard dynamic programming techniques....

Tipo: Conference Paper or Presentation

Palavras-chave: Dynamic optimization; Irrigation; Reversible; Technology adoption; Water; Research and Development/Tech Change/Emerging Technologies.

Ano: 2005

URL: http://purl.umn.edu/19156

A STUDY OF THE IMPACT OF LAND USE AND OCCUPATION ON BASIN WATER QUALITY THROUGH MULTIVARIATE STATISTICS

REA

Santos,Gilmar O.; Hernandez,Fernando B. T.; Ferraudo,Antonio S.; Vanzela,Luiz S.; Santos,Duílio J. O..

ABSTRACT Without effective actions to improve environmental management, water resources tend to become scarce. Thus, this study aimed to understand the processes influencing the physical, chemical, and biological properties of the water due to land uses and occupation in the Ipê stream basin, in Ilha Solteira - SP (Brazil), regarding the dependence of the analyzed variables. Monitoring of chemical, physical, and biological water quality was performed from 2006 to 2011, and the records of land use and occupation in 2011. A factorial multivariate analysis allowed us to understand that the processes in densely populated areas increased degradation of water by the input of organic loads, yet those of farming areas enhanced the degradation of the chemical and...

A study on sustainability as related to performances of upper Pampanga and Magat River integrated irrigation systems in the Philippines

Palavras-chave: Factor analysis; Irrigation; Land use and occupation; River basin.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300453

International Rice Research Institute

Elkaduwa, Wipula Keerthi Bandara.

242 leaves : ill. Thesis (Ph.D.) -- University of the Philippines at Los Baños

Tipo: Thesis

Palavras-chave: Irrigation; Rice; Sediment deposition; Philippines; Upper Pampanga River Integrated Irrigation System; Magat River Integrated Irrigation System.

Ano: 1994

URL: http://hdl.handle.net/123456789/691

Absorption of nutrients by cowpea irrigated with saline water under different leaching fractions

AGRIAMBI

Tagliaferre,Cristiano; Guimarães,Diogo U. G.; Gonçalves,Lorena J.; Amorim,Carlos H. F.; Campos,Willian V.; Rocha,Felizardo A..

ABSTRACT Salinity is one of the main environmental problems that negatively affect plant growth and metabolism, besides being one of the factors responsible for the decrease in the yield of crops, especially in arid and semiarid regions. Thus, the aim of this study was to evaluate the effects of soil salinity on the mineral nutrition of irrigated cowpea. The experiment was conducted in drainage lysimeters in a greenhouse, in a completely randomized design with seven treatments, one irrigated with freshwater (control) and six irrigated with saline water with different leaching fractions (5, 10, 15, 20, 30 and 40%) of the applied irrigation depth, with three replicates. The irrigation with saline water treatments did not affect significantly the contents of...

Accumulation of salts in the soil and growth of cowpea under salinity and phosphorus fertilization

Palavras-chave: Salinity; Leaching depths; Irrigation.

Ano: 2016

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001201067

Rev. Ciênc. Agron.

Lima,Yuri Bezerra de; Sá,Francisco Vanies da Silva; Ferreira Neto,Miguel; Paiva,Emanoela Pereira de; Gheyi,Hans Raj.

ABSTRACT Cowpea is widely grown in the Brazilian semiarid region, however, due to excess salts in the soil and irrigation water constantly low crop productivity has been observed. Accumulation of salts in the soil, growth and biomass partition of cowpea under salt stress and phosphorus fertilization was evaluated in this study. The assay was conducted in a greenhouse in Mossoró, State of Rio Grande do Norte, Brazil, from September to December 2015, using a Alfissol Latosolic with low phosphorus content. The experiment was carried out in a randomized block design in a factorial 5 x 3 arrangement, consisting of five water salinity levels (0.5, 1.5, 2.5, 3.5 and 4.5 dS m-1) and three doses of superphosphate (60, 100 and 140% of the recommended dose for crop -...