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| Registros recuperados: 45 | |
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| Imam, Hisham Mohamed. |
| Innovative irrigation agricultural and irrigation strategies are desirable in the face of dwindling water resources and increasing demand for food, especially in arid and semi-arid areas. The presented work investigated the effect of both Alternate Partial Root-Zone Drying (APRD), mulching and drip irrigation system type on yield productivity and water use efficiency of Zucchini. Field experiments were conducted at Testing and Research Station for Tractors and Farm Machinery, Alexandria Governorate. The experimental treatments were: two types of irrigation management (full and APRD), and two soil covering (plastic mulching and without plastic mulch) under both surface and subsurface drip irrigation systems. The soil electrical conductivity was 8.19... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drip irrigation; APRD; Mulching; Saline soil; And Zucchini. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6215 |
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| Payero, J.O.; Tarkalson, D.D.; Irmak, S.; Davison, D.; Petersen, J.L.. |
| Quantifying the local crop response to irrigation is important for establishing adequate irrigation management strategies. This study evaluated the effect of irrigation applied with subsurface drip irrigation on field corn (Zea mays L.) evapotranspiration (ETc), yield, water use efficiencies (WUE = yield/ETc, and IWUE = yield/irrigation), and dry matter production in the semiarid climate of west central Nebraska. Eight treatments were imposed with irrigation amounts ranging from 53 to 356 mm in 2005 and from 22 to 226 mm in 2006. A soil water balance approach (based on FAO-56) was used to estimate daily soil water and ETc. Treatments resulted in seasonal ETc of 580–663 mm and 466–656 mm in 2005 and 2006, respectively. Yields among treatments differed by as... |
| Tipo: Article |
Palavras-chave: Drip irrigation. |
| Ano: 2008 |
URL: http://eprints.nwisrl.ars.usda.gov/1288/1/1265.pdf |
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| Payero, J.O.; Tarkalson, D.D.; Irmak, S.; Davison, D.; Petersen, J.L.. |
| Water regulations have decreased irrigation water supplies in Nebraska and some other areas of the USA Great Plains. When available water is not enough to meet crop water requirements during the entire growing cycle, it becomes critical to know the proper irrigation timing that would maximize yields and profits. This study evaluated the effect of timing of a deficit-irrigation allocation (150 mm) on crop evapotranspiration (ETc), yield, water use efficiency (WUE = yield/ETc), irrigation water use efficiency (IWUE = yield/irrigation), and dry mass (DM) of corn (Zea mays L.) irrigated with subsurface drip irrigation in the semiarid climate of North Platte, NE. During 2005 and 2006, a total of sixteen irrigation treatments (eight each year) were... |
| Tipo: Article |
Palavras-chave: Soil; Water; Drip irrigation. |
| Ano: 2009 |
URL: http://eprints.nwisrl.ars.usda.gov/1328/1/1305.pdf |
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| Harby M. S. Mostafa; Dr. of Agricultural Eng.. |
| Abstract: Drip irrigation is one of the most efficient systems in delivering water to the plant root zone but it still allows relatively high evaporation from the saturated zone that develops under emitters especially in clay soils of low infiltration rates. Initial lateral water movement may take a long time in such soils thus exposing surface water to high evaporation. The vertical columns method induces water infiltration keeping the actual water surface deeper in the soil profile. The objective of this research is to compare between the effect of vertical compost and sand columns on the distribution of water in the root zone and the potential for water saving in clay soil. A field experiment was conducted and the... |
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Palavras-chave: Drip irrigation; Vertical mulch; Water saving. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2743 |
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| Mostafa, Harby M. S.. |
| Abstract: Drip irrigation is one of the most efficient systems in delivering water to the plant root zone but it still allows relatively high evaporation from the saturated zone that develops under emitters especially in clay soils of low infiltration rates. Initial lateral water movement may take a long time in such soils thus exposing surface water to high evaporation. The vertical columns method induces water infiltration keeping the actual water surface deeper in the soil profile. The objective of this research is to compare between the effect of vertical compost and sand columns on the distribution of water in the root zone and the potential for water saving in clay soil. A field experiment was conducted and the results indicated that the vertical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drip irrigation; Vertical mulch; Water saving. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2743 |
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| Lopes,Adriano da S.; Folegatti,Marcos V.; Oliveira,Gabriel Q. de; Fanaya Júnior,Eder D.; Belchior,Isabela B.; Brito,Kelvin R. M.. |
| Irrigation management has mostly been performed without criteria and, studies in relation to field-irrigated eucalyptus development are scarce. The aim of this study was to evaluate wood volume equations based on stem (trunk) diameter of two eucalyptus hybrids in initial development, with and without irrigation. The experiment was set up in Aquidauana, State of Mato Grosso do Sul, Brazil, from April, 2011 to March, 2012, with the eucalyptus hybrids, Eucalyptus grandis x Eucalyptus camaldulensis (Grancam) and Eucalyptus urophylla x Eucalyptus grandis (Urograndis). Evaluations were performed during the first year of crop development in which five mathematical models were tested for estimation of wood volume (Berkhout; Koperzik & Gehrhardt;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eucalyptus spp; Volume equations; Drip irrigation; Micro-spray irrigation. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014001000014 |
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| Monte,José A.; Carvalho,Daniel F. de; Medici,Leonardo O.; Silva,Leonardo D. B. da; Pimentel,Carlos. |
| The influence of irrigation depth was evaluated on tomato crop hybrid Debora plus for salad in a field experiment in split-block design with five treatments (irrigation depth of 40, 60, 80, 100 and 120% of crop evapotranspiration - ETc) and four replications. During the experiment, ten plant samples were collected to determine phytomass and leaf area to estimate plant growth parameters for different depths of irrigation. Results showed maximal growth between 70 and 80 days after transplanting in all treatments. Increase in irrigation depth above 80% of ETc increased crop growth rate (CGR), leaf area index (LAI) and total production of tomato fruits, although same commercial fruit yield was obtained with the lower depths. Therefore, an increase in depth of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersicon; Growth analysis; Drip irrigation. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013000900003 |
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| Lima,Lucivania R.; Silva,Thieres G. F. da; Jardim,Alexandre M. da R. F.; Souza,Carlos A. A. de; Queiroz,Maria G. de; Tabosa,José N.. |
| ABSTRACT The effects of the forage cactus sorghum configuration and different irrigation depths on the growth, water use and efficiency of the forage cactus production system were investigated in this study. The experiment was conducted in the municipality of Serra Talhada, Pernambuco State, Brazil, between the years 2012 and 2013. Forage cactus was distributed in randomized blocks with factorial scheme and four replicates, in split plots (5 x 2), with five irrigation depths (0, 8.75, 17.5, 26.25 and 35% of the reference evapotranspiration, ET0) and two cropping systems (forage cactus monocropping and forage cactus sorghum intercropping). Crop evapotranspiration was calculated through soil water balance. The ratio between crop and reference... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Actual evapotranspiration; Drip irrigation; Land use; Semi-arid region. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000200113 |
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| AZEVEDO,BENITO MOREIRA DE; BOMFIM,GUILHERME VIEIRA DO; NASCIMENTO NETO,JOAQUIM RAIMUNDO DO; VIANA,THALES VINÍCIUS DE ARAÚJO; VASCONCELOS,DENISE VIEIRA. |
| ABSTRACT Local knowledge about irrigation management in yellow melon can promote higher precision to water supply for irrigation purposes, increasing productivity and reducing production costs. The aim of this study was to evaluate the effects of different irrigation depths for yellow melon production and on yield response factor to water (Ky) in the productive phase. The experiment was carried out in Fortaleza, state of Ceará, Brazil, in complete randomized blocks with six treatments, four replicates and six plants per plot. Treatments were applied from intermediate (III) to final (IV) physiological state with water depths equivalents to 25%, 50%, 75%, 100%, 125% and 150% of the crop evapotranspiration (ETc). Ky was calculated according to FAO-33 report... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucumis melo; Evapotranspiration; Drip irrigation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400704 |
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| Custódio,Anselmo A. de P.; Faria,Manoel A. de; Rezende,Fátima C.; Morais,Augusto R. de; Leite Junior,Maurício C. R.. |
| It was evaluated the effect of irrigation management on the production characteristics of coffee cultivar Acaiá MG-1474, planted in spacing of 3.00 m x 0.60 m, pruned in 2004, and irrigated by drip since the planting, in 1997. The experimental designed used was of randomized blocks with five treatments and four replications. The treatments consisted of irrigation management strategies, applying or not applying controlled moisture deficit in layer of 0 to 0.4m, in dry seasons of the year: A = no irrigation (control), B = irrigation during all year considering the factor of water availability in the soil (f) equal to 0.75, C = irrigation during all year considering f = 0.25, D = irrigation during all year, but in January /February /March /July /October... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drip irrigation; Productivity; Coffee plantation; Coffea arabica L. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000100007 |
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| Pereira,Michel E. M.; Lima Junior,Joaquim A. de; Souza,Rodrigo O. R. de M.; Gusmão,Sergio A. L. de; Lima,Valdeides M.. |
| ABSTRACT In order to provide scientific information about the irrigated cauliflower production in Northeast of Para, an experiment was installed in the Federal Rural University of Amazonia farm with the Desert hybrid under different water tensions on the ground and boron doses in the municipality of Igarapé-Açu – PA. The experimental design was a randomized block in a 4 x 4 factorial, sixteen treatments with three replications. The treatments consisted of four water tensions on the ground (15, 30, 45 and 60 kPa) as an indicative of the time to irrigate and four boron doses (0, 2, 4 and 6 kg ha-1). The irrigation was performed with drippers and irrigation management with tensiometers. Each plot, 4 m2, consisted of 8 plants located in the spacing of 1.0 m... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea var; Botrytis; Drip irrigation; Tensiometer. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000500811 |
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| Bezerra,Francicso M. L.; Freitas,Cley A. S. de; Silva,Alexandre R. A. da; Mota,Suetônio de B.; Aquino,Boanerges F. de. |
| The objective of this study was to evaluate the productive performance of sunflower plants irrigated with different levels of domestic treated sewage and groundwater well with different doses of nitrogen. It was used randomized blocks design in split-split plots with four replications. In the plots, we evaluated the effect of two types of irrigation water, in the subplots we evaluated the five irrigation levels expressed as 25, 50, 75, 100 and 125% of the Class A pan Evaporation (CAE), and in the sub subplots, we evaluated the effect of four different doses of nitrogen (25, 50, 75 and 100 kg ha-1). The irrigation of sunflower with domestic sewage produced greater yield potential of grain and oil. The use of water from treated wastewater can replace up to... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Helianthus annuus; Recycle; Drip irrigation; Nitrogen fertilization. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600014 |
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| Deus,Fábio P. de; Faria,Manoel A. de; Oliveira,Ednaldo L. de; Castro Neto,Pedro. |
| The aim of this research was to evaluate the effects of different irrigation depths and potassium dosages, of Jatropha seed oil content and yield. The experimental design used was randomized blocks, in split-plots, with four replicates. The treatments were four water depths (plots) and four potassium dosages (subplots) applied through irrigation water. The water depths were applied based on the percentage of accumulated evaporation of a Class A (ECA) tank and of rainfall, as following: L0 = without irrigation, L40, L80 and L120, representing 40, 80 and 120% of the balance, respectively. The potassium dosages were K30, K60, K90 and K120 (30, 60, 90 and 120kg ha-1 of potassium, respectively). The oil extraction of samples was done through chemical extraction... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical extraction; Biodiesel; Oilseed; Drip irrigation. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000600010 |
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| Almeida,Alex N. de; Coelho,Rubens D.; Costa,Jéfferson de O.; Farías,Asdrúbal J.. |
| ABSTRACT: In Brazil, the conventional center pivot is widely used for irrigation of agricultural crops and its use has grown continuously. However, when improperly managed, it facilitates the development of diseases in all parts of the plant, with a direct effect on productivity, besides favoring losses of water by evaporation. The drip may be an alternative, since it minimizes the losses and does not wet the aerial parts of the plants, thereby reducing the incidence of diseases. A new system called localized mobile drip irrigation (IRGMO) is being developed in an attempt to combine the practicality and rusticity of the center pivot with the efficiency and water savings of the dripping irrigation systems. This fusion system is the central pivot with drip... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Design; Drip irrigation; Center pivot. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000400828 |
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| Registros recuperados: 45 | |
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