Consulta: subjectFacets:"Drip irrigation"
Registros recuperados: 45
Data/hora: 12/06/2024 07:21:08

Coffea arabica (cv Catuaí) production and bean size under different population arrangements and soil water availability
Provedor de dados: 70
Autores: Sakai,Emilio; Barbosa,Eduardo A. A.; Silveira,Jane M. de C.; Pires,Regina C. de M.
The purpose of this research was to evaluate the effect of drip irrigation under different population arrangements on the phytometric features, coffee productivity and bean size classification according to sieve retention. The experiment with Coffea arabica L. cv Catuaí was carried out in Mococa, São Paulo, Brazil. The experimental design was a 6 x 2 factorial scheme in randomized blocks, with four replications. The six densities of plantation were E1 (1.60 x 0.50 m); E2 (1.60 x 0.75 m); E3 (1.60 x 1.00 m); E4 (3.20 x 0.50 m); E5 (3.20 x 0.75 m) and E6 (3.20 x 1.00 m), which were divided according to the availability of water (irrigated - I - or non-irrigated - NI - groups). Data were submitted to analysis of variance and averages compared by Tukey test at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drip irrigation; Coffee productivity; Coffee crop phytometry; Coffee bean size.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000100015

Water application uniformity and fertigation in a dripping irrigation set
Provedor de dados: 70
Autores: Borssoi,Adilson L.; Vilas Boas,Marcio A.; Reisdörfer,Marcelo; Hernández,Ricardo H.; Follador,Franciele A. C.
The purpose of this study was to evaluate the uniformity of distribution coefficient (UDC) and coefficient of variation (CV) of a familiar set of irrigation, classifying it the ASAE standard. The irrigation and fertigation are determined by two methods the KELLER &amp;amp; KARMELI and DENÍCULI . The two experiments were subjected to varying pressures: 12, 14, 16 and 18 kPa, in a completely randomized design of twenty samples composed of flows with three replications. Urea, potassium chloride (KCl) and ammonium phosphate (MAP) were the elements used for fertigation. The system consisted of a 200 L tank, which supplied another container of 30 L, it was moved vertically to control the pressure. The data was statistically compared between treatments for each...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Emitter; Hydraulic performance; Low head; Drip irrigation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000400011

Irrigation with domestic treated sewage and nitrogen fertilizing in sunflower cultivation
Provedor de dados: 70
Autores: 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

Irrigation management in pruned coffee tree crop
Provedor de dados: 70
Autores: 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

METHODOLOGY FOR DIMENSIONING OF A CENTER PIVOT IRRIGATION SYSTEM OPERATING WITH DRIPPER TYPE EMITTER
Provedor de dados: 70
Autores: 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

Irrigation management influence and fertilizer doses with boron on productive performance of cauliflower
Provedor de dados: 70
Autores: 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

Jatropha seed oil content and yield under different irrigation and potassium fertilization levels
Provedor de dados: 70
Autores: 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

Potato production affected by fertilization methods, masses of seed tubers and water regimes
Provedor de dados: 75
Autores: Viana,Jonathan dos S; Palaretti,Luiz Fabiano; Faria,Rogério T de; Delgado,Yago V; Dalri,Alexandre B; Barbosa,José de A.
ABSTRACT Increasing potato yield while saving natural resources is a challenge for all those involved in the potato production chain. A field experiment was carried out in order to evaluate the effect of different levels of fertilization, mass of seed tubers and the water regime on the production of potato cv. Orchestra. We tested fertilization methods (F1= conventional fertilization; F2= fertigation according to the rate of absorption by the crop; F3= fertigation split into 3 applications), seed tuber mass (ST1= &lt;50 g; ST2= &gt;50 g), and water regimes [WR1= 50%; WR2= 100% replacement of crop evapotranspiration (ETc)]. The study was conducted using a split-plot randomized block design, with fertilizers in the plot and seed tuber mass in the subplot,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Drip irrigation; Nutrition; Propagation.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000200166

Performance of processing tomatoes under different supply levels of crop evapotranspiration
Provedor de dados: 75
Autores: Silva,Cícero J; Pontes,Nadson C; Golynski,Adelmo; Braga,Marcos B; Quezado-Duval,Alice M; Silva,Nikson EP.
ABSTRACT Irrigation management is essential to promote appropriate plant growth and guarantee production and quality of the tomatoes for processing, increases the efficiency of nutrients use and contributes to ensure the sustainability of the production chain. This study was installed to evaluate productive performance of two processing tomato hybrids submitted to five water depths under drip irrigation system. Five levels of crop evapotranspiration (ETc) replacement (60%, 100%, 140%, 180% and 220%) and two tomato hybrids (BRS Sena and H 9992) were tested. The experimental design was a 5×2 factorial arranged in randomized complete block design with four replications. During the crop cycle, hybrids BRS Sena and H 9992 needed 692.20 and 418.43 mm of water,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicum; Irrigation water depth; Drip irrigation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300299

Cultivo do meloeiro para o norte de Minas Gerais.
Provedor de dados: 14
Autores: SILVA, H. R.; MAROUELLI, W. A.; SILVA, W. L. C.; SILVA, R. A.; OLIVEIRA, L. A.; RODRIGUES, A. G.; SOUZA, A. F.; MAENO, P.
Aspectos mercadologicos; Exigencias climaticas; Cultivares; Preparo do solo e calagem; Adubacao; Irrigacao; Controle de planta daninhas; Controle de doencas; Controle de pragas; Desordens fisiologicas do fruto; Consideracoes finais.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Cultivo; Projeto Jaiba; Planta daninha; Lagarta-rosca; Broca das cucurbitaceas; Diaphania lyalinata; Minas Gerais; Brasil; Melon; Crop system; Farm system; Fertirrigation; Drip irrigation; Cultivation; Diseases; Pest insects; Whitefly.; Ácaro Rajado; Agrotis Ipsilon; Cucumis Melo; Controle Químico; Diaphania Nitidalis; Diabrotica Speciosa; Distúrbio Fisiológico; Doença; Fertirrigação; Irrigação; Mosca Branca; Melão; Praga; Pulgão; Vaquinha.; Tetranychus Urticae; Sistema de Produção; Bemisia argentifolii; Liriomyza; Brazil; Chemical control; Irrigation; Weeds.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/769737

Resposta de cultivares de tomateiro para processamento industrial a fertirrigacao por gotejamento subterraneo.
Provedor de dados: 14
Autores: SILVA, W. L. C.; GIORDANO, L. de B.; GORNAT, B.; MAROUELLI, W. A.; FONTES, R. R.
bitstream/item/103100/1/pa-6.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Tomate para processamento; Gotejamento; Processing tomato; Drip irrigation; Root system.; Fertirrigação; Lycopersicon Esculentum; Sistema Radicular.; Fertigation.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/758628

Effect of timing of a deficit-irrigation allocation on corn evapotranspiration, yield, water use efficiency and dry mass
Provedor de dados: 18
Autores: 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

Effect of irrigation amounts applied with subsurface drip irrigation on corn evapotranspiration, yield, water use efficiency, and dry matter production in a semiarid climate
Provedor de dados: 18
Autores: 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

Livelihoods and gender roles in drip-irrigation technology: A case of Nepal.
Provedor de dados: 31
Autores: Upadhyay,   Bhawana; Samad,   Madar; Giordano,   Mark.
Tipo: Working or Discussion Paper
Palavras-chave: Gender; Drip irrigation; Technology; Rural women; Empowerment; Vegetables; Family income; Households; Villages; Farmers; Economic aspects; Consumer/Household Economics; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2005
URL: http://purl.umn.edu/92368

Promoting micro-irrigation technologies that reduce poverty
Provedor de dados: 31
Autores: International Water Management Institute (IWMI).
According to research done by the International Water Management Institute (IWMI), one-third of the world’s population will face absolute water scarcity by the year 2025. Among the worst hit will be regions in Asia, the Middle-East and Sub-Saharan Africa, home to some of the largest concentrations of rural poverty in the world. Policymakers, researchers, NGOs, and farmers are pursuing various technical, institutional and policy interventions to meet this challenge. Micro-irrigation technologies, commonly in use in water scarce areas of developed countries, constitute one such intervention with the ability to use water more efficiently in irrigated agriculture. These technologies can improve productivity; raise incomes through crop yields and outputs; and...
Tipo: Report
Palavras-chave: Irrigated farming; Technology; Drip irrigation; Rural women; Farm Management; Food Security and Poverty.
Ano: 2006
URL: http://purl.umn.edu/113058

Strategic Analyses of the National River Linking Project (NRLP) of India, Series 1. India’s water future: scenarios and issues
Provedor de dados: 31
Tipo: Book
Palavras-chave: River basins; Environmental flows; Development projects; Water requirements; Irrigated farming; Water demand; Food demand Groundwater irrigation; Irrigation efficiency; Water harvesting; Supplemental irrigation; Water productivity; Water conservation; Drip irrigation; Sprinkler irrigation; Rainfed farming; Agricultural policy; Agricultural and Food Policy; Farm Management.
Ano: 2009
URL: http://purl.umn.edu/113261

The challenges of integrated river basin management in India: issues in transferring successful river basin management models to the developing world
Provedor de dados: 31
Autores: International Water Management Institute,   IWMI-TATA Water Policy Program.
The problems that river basin institutions in the developed world successfully address—such as pollution, sediment buildup in rivers and the degradation of wetlands—are not the top priorities for Indian policy makers and people. The items that do top Indian agendas—providing access to water for drinking and growing food, eradicating poverty, and stopping groundwater overexploitation—are either unresolved in the developed world or have become irrelevant due to economic development. This does not mean that India and other developing countries cannot learn valuable lessons from models for Integrated River Basin Management. Loosely structured River Basin Organizations, such as Southeast Asia’s Mekong Commission, can contribute to basin welfare by serving as a...
Tipo: Report
Palavras-chave: River basins; Hydrology; Water management; Water harvesting; Groundwater management; Drip irrigation; Institutional development; Environmental Economics and Policy; Institutional and Behavioral Economics.
Ano: 2002
URL: http://purl.umn.edu/113064

Private irrigation in Sub-Saharan Africa; Regional Seminar on Private Sector Participation and Irrigation Expansion in sub-Saharan Africa, Proceedings 22-26 October 2011, Accra, Ghana
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Irrigation management; Privatization; Irrigated farming; Financing; Irrigation systems; Gender; Women; Government managed irrigation systems; Farmer managed irrigation systems; Rice; Horticulture; Technology transfer; Pumps; Drip irrigation; Filtration; Capacity building; Urban agriculture; Poverty; Water users associations; Agricultural credit; Agricultural and Food Policy; Agricultural Finance; Farm Management; Financial Economics; Food Security and Poverty; Institutional and Behavioral Economics; Labor and Human Capital.
Ano: 2002
URL: http://purl.umn.edu/118418

Multiple use schemes: Benefit to smallholders
Provedor de dados: 31
Autores: Pant,   Dhruba; Gautam,  Kamal Raj; Shakya,   Sabita Dhakhwa; Adhikari,   Deepak Lochan.
Tipo: Working or Discussion Paper
Palavras-chave: Irrigation programs; Water supply; Domestic water; Drinking water; Irrigation water; Drip irrigation; Sprinkler irrigation; Vegetables; Cereals; Women; Land ownership; Participatory management; Farmer participation; Water users; Social aspects; Households; Income; Credit; Crop Production/Industries; Farm Management; Labor and Human Capital; Land Economics/Use; Production Economics; Public Economics; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/91944

Water poverty in the northeastern hill region (India): Potential alleviation through multiple-use water systems: Cross-learnings from Nepal Hills
Provedor de dados: 31
Autores: Sharma,   Bharat R.; Riaz,   M.V.; Pant,   Dhruba; Adhikary,   D.L.; Bhatt,   B.P.; Rahman,   H.
Tipo: Report
Palavras-chave: Water poverty index; Construction; Multiple use; Water storage; Farming systems; Villages; Social aspects; Drip irrigation; Nepal; Nagaland; Mon district; Lampong Sheanghah; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Health Economics and Policy; Industrial Organization; Institutional and Behavioral Economics; Land Economics/Use; Production Economics; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Risk and Uncertainty.
Ano: 2010
URL: http://purl.umn.edu/91466

Evaluation of wood volume in young eucalyptus trees with and without irrigation
Provedor de dados: 91
Autores: 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 &amp;amp; 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

Production and yield response factor of sunflower under different irrigation depths
Provedor de dados: 91
Autores: Azevedo,Benito M. de; Vasconcelos,Denise V.; Bomfim,Guilherme V. do; Viana,Thales V. de A.; Nascimento Neto,Joaquim R. do; Oliveira,Kárcia M. A. S. de.
ABSTRACT Local information about irrigation depths for sunflower can be used in the design of projects and irrigation management to increase crop yield and to reduce costs. This study aimed to evaluate the effects of irrigation depths on sunflower and calculate its yield response factor. The experiment was conducted in Fortaleza-CE, Brazil, in a randomized block design, with six treatments, four replicates and ten evaluated plants per plot. The treatments were applied in the phenological stages II, III and IV with irrigation depths equivalent to 25, 50, 75, 100, 125 and 150% of crop evapotranspiration. The yield response factor was calculated according to FAO Bulletin nº 33. The water supply, equivalent to 79.7 and 91.1% of crop evapotranspiration,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus; Water requirement; Drip irrigation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000500427

Growth analysis and yield of tomato crop under different irrigation depths
Provedor de dados: 91
Autores: 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

Physiological and vegetative behavior of banana cultivars under irrigation water salinity
Provedor de dados: 91
Autores: Santana Júnior,Edvaldo B.; Coelho,Eugênio F.; Gonçalves,Karoline S.; Cruz,Jailson L.
ABSTRACT The purpose of the study was to evaluate the effect of salinity levels of irrigation water on physiology and growth of banana cultivars during the vegetative stage. The experiment was carried out following a completely randomized design in split plots, with four levels of salinity in irrigation water (0.5, 2.0, 3.0 and 4.0 dS m-1) and four banana cultivars (Pacovan, Prata Anã, BRS Platina and Princesa) with three repetitions. Stomatal conductance, transpiration, relative water content, leaf water potential and proline concentration were evaluated at 150 days after transplanting (DAT), besides plant height, stem diameter and leaf area. All variables showed sensitivity to the increase of salinity level of irrigation water. The results of soil water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa spp.; Relative transpiration; Electrical conductivity; Drip irrigation.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000200082

Stalk yield of sugarcane cultivars under different water regimes by subsurface drip irrigation
Provedor de dados: 91
Autores: Andrade Junior,Aderson S. de; Bastos,Edson A.; Ribeiro,Valdenir Q.; Athayde Sobrinho,Candido; Silva,Paulo H. S. da.
ABSTRACT This study aimed to evaluate the stalk yield of ten sugarcane cultivars (RB962962, RB931011, RB931530, RB98710, RB92579, RB867515, RB863129, SP791011, RB72545 and VAT90212) subjected to water deficit, full irrigation and water surplus by subsurface drip irrigation, during three cropping seasons (2011-2014). The experiment was conducted at the Experimental Field of Embrapa Meio-Norte, Teresina, Piauí State, Brazil, in dystrophic Red Yellow Argisol. The cultivars RB962962 (162.3 Mg ha-1) and RB867515 (158.5 Mg ha-1) have better stalk yield compared with other cultivars in all water regimes and cropping seasons.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum officinarum L.; Irrigation management; Drip irrigation; Cultivar selection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000300169

Growth, water use and efficiency of forage cactus sorghum intercropping under different water depths
Provedor de dados: 91
Autores: 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

IRRIGATION DEPTHS AND YIELD RESPONSE FACTOR IN THE PRODUCTIVE PHASE OF YELLOW MELON
Provedor de dados: 94
Autores: 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

Water quality and head loss in irrigation filters
Provedor de dados: 63
Autores: Ribeiro,Túlio Assunção Pires; Paterniani,José Euclides Stipp; Airold,Rogério Pereira da Silva; Silva,Marcelo Jacomini Moreira da.
Among the irrigation systems used today, trickle irrigation is one of the most efficient methods. This research, conducted by means of field tests, had the objective of comparing head loss evolution on water filtration with a disc filter (130 mum) and a non-woven synthetic fabric filter used in a drip irrigation system. The test consisted of fertirrigation with organic fertilizer, and chemical treatment of the water with sodium hypochlorite. Physical, chemical, and biological parameters were analyzed, such as: pH, turbidity, suspended solids, dissolved solids, EC, hardness, Langelier index, total iron, manganese, sulfides, algae, and bacteria. The water source used in this experiment was from an open reservoir, where an experimental trickle irrigation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drip irrigation; Filtration; Chlorine; Non-woven synthetic fabric; Fertilizers.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000600001

Spatial and temporal characterization of water and solute distribution patterns
Provedor de dados: 63
Autores: Souza,Claudinei Fonseca; Folegatti,Marcos Vinícius.
The use of drip irrigation and marginal water is growing rapidly in some areas, highlighting the need to develop sound fertigation practices that combine environmental and crop production concerns. In this study the spatial and temporal water and solute distribution patterns are characterized to underpin fertirrigation design and management systems. Time domain reflectometry (TDR) probes were used to monitor the distributions of potassium nitrate (KNO3) and water from drippers discharging at a constant flow rate of 4 L h-1 in soil-filled containers. In the interactions between the different profiles, a gradient distribution of the solution in the soil was observed, with greater storage of solution close to the dripper, which decreased gradually as it...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: TDR; Drip irrigation; Wetted soil volume.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000100002

Saffron yield and quality as influenced by different irrigation methods
Provedor de dados: 63
Autores: Mollafilabi,Abdullah; Davari,Kamran; Dehaghi,Majid Amini.
ABSTRACT Dried stigma of saffron is the most expensive spice in the world. In Iran, the majority of saffron farms use the traditional basin method for irrigation, which, together with other irrigation methods may soon face serious problems because of droughts in the future. Making an evaluation of the regional crop response to the irrigation method is important to the adoption of a proper irrigation management strategy. In this study, the effect of employing different irrigation methods, including the sprinkler, drip, furrow, and basin, on the following factors was evaluated: the saffron stigma dry weight, quality, water use efficiency (WUE), and Irrigation water use efficiency (IWUE) in the arid climate of Qaen, South Khorasan, Iran, over three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crocin; Picrocrocin; Safranal; Drip irrigation; Water use efficiency.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000100603

Effect of partial soil wetting on transpiration, vegetative growth and root system of young orange trees
Provedor de dados: 63
Autores: Vellame,Lucas Melo; Fraga Júnior,Eusímio Felisbino; Coelho,Rubens Duarte.
The wetted area fraction is a factor critical to the success of drip irrigation. This study aimed to evaluate the effect of partial soil wetting on transpiration, vegetative growth and root system of young orange trees. The experiment was carried out in a greenhouse where plants were grown in 0.5 m3boxes internally divided into compartments. The wetting of 12 % of soil area was tested on two types of soil cultivated with ‘Valencia’ orange trees grafted onto Rangpur lime and ‘Swingle’ citrumelo rootstocks. Transpiration was determined in 40 plants. Water extraction and root density were evaluated in the compartments. Transpiration is reduced by restriction in wetted soil area, and such reduction is influenced by the number of days after the beginning of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drip irrigation; Sap flow; Wetted bulb; Root length density.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000500377

Water-yield relationships of potato under different irrigation methods and regimens
Provedor de dados: 63
Autores: Erdem,Tolga; Erdem,Yesim; Orta,Halim; Okursoy,Hakan.
Yield response to irrigation of different crops is of major importance in production planning where water resources are limited. This study aims to determine the effect of different irrigation methods and irrigation regimens on potato yield in the Trakya Region, Turkey, during 2003 and 2005. Potato was grown under furrow and drip irrigation methods and three regimens: irrigation applied when 30, 50, or 70% of the available water was consumed. The seasonal potato evapotranspiration ranged on 501 to 683 mm in 2003, and 464 to 647 mm in 2005. The furrow and drip irrigation methods had no significant effect on tuber yield for both years. Irrigation regimens influenced tuber yield (P &lt; 0.05) in 2005, and the highest tuber yield was registered for 30%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Furrow irrigation; Drip irrigation; Evapotranspiration; Water use efficiency.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000300003

Produção de pimenta tabasco com aplicação de CO2, utilizando-se irrigação por gotejamento - doi: 10.4025/actasciagron.v33i1.5374
Provedor de dados: 1
Autores: Paula, Fabiana Luiza Matielo de; Escola Superior de Agricultura Luiz de Queiroz; Frizzone, José Antônio; USP-ESALQ, Piracicaba; Paula, Adalberto Luiz de; Escola Superior de Agricultura Luiz de queiroz; Dias, Carlos Tadeu dos Santos; Escola Superior de Agricultura Luiz de queiroz; Soares, Tales Miler; Universidade Federal do Recôncavo da Bahia.
A aplicação de CO2 via água de irrigação produz o rebaixamento do pH da solução do solo, causando variações na mobilidade dos nutrientes e consequentes efeitos na absorção. O objetivo deste trabalho foi analisar os efeitos de doses de dióxido de carbono (CO2), aplicadas via irrigação por gotejamento, na produção da pimenta Tabasco. O delineamento experimental foi o de blocos casualizados com quatro tratamentos e oito repetições. Os tratamentos foram quatro doses de CO2: 0 (T1), 451,95 (T2); 677,93 (T3) e 903,92 (T4) kg ha-1. Os frutos foram pesados e contados; o comprimento e o diâmetro de frutos foram obtidos com a média de 20 frutos por planta. Ocorreu efeito quadrático (p &lt; 0,01) para as doses de CO2 sobre a produção e o efeito quadrático (p &lt;...
Palavras-chave: Capsicum frutescens L.; Dióxido de carbono; Irrigação por gotejamento Capsicum frutescens L.; Carbon dioxide; Drip irrigation.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5374

Production of drip irrigated squash (Cucurbita Pepo, L.) under different levels of irrigation and uniformity
Provedor de dados: 111
Autores: Elnemr, Moataz Kamal; Elmetwalli, Adel Helal.
This study aimed to get the most possible benefit of using deficit irrigation to maximize water productivity of squash, besides investigating the ability of drip irrigation uniformity to reduce the effect of deficit irrigation on squash crop production (Cucurbita pepo - Hybrid Revera). Three levels of irrigation uniformity levels (UL) based on the value of uniformity coefficient (UC) namely excellent (E), very good (VG), and unacceptable (UA) were examined with three irrigation levels based on crop evapotranspiration (ETc) which were full irrigation (FI or 100% ETc) to be compared to two defecit irrigation levels 90% ETc (DI90), and 80% ETc (DI80). Results showed that both UL and DI had significant effect on squash production. There was significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Deficit irrigation; Drip irrigation; Levels; Production; Squash; Uniformity.
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6277

Calibrating and validating AquaCrop model for maize crop in Northern zone of Nigeria
Provedor de dados: 111
Autores: Ezekiel, Oiganji; Igbadun, H. E.; Mudiare, O.J.; Oyebode, M.A.
Farmers in the northern Guinea Savannah ecological zone of Nigeria have been experiencing declining crop yield due to erratic water supply. In recent times, research on better water management and interaction between effects of climate, soil and field management on crop production is fast gaining grounds with the use of models. Models can be used to predict the impact of long-term climate variability, thus providing an opportunity of better techniques compared with the traditional multi-location trials. This study presents the calibration and validation of AquaCrop model for drip irrigated maize (Zea mays). Calibration was done using data of 2013, while validation across seasons was done with data of 2014. The modelling efficiency of grain yield, biomass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering/ soil and water conservation engineering growth stage; Deficit irrigation; Drip irrigation; Water management; Modelling.
Ano: 2016
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3755

Solar pump irrigation system for green agriculture
Provedor de dados: 111
Autores: M A Hossain; Principal Scientific Officer; M S Hassan; Chief Scientific Officer; S Ahmmed; Chief Scientific Officer; M S Islam; Former Director (Research).
Ever increasing fuel cost and doubtful availability of electricity hampers the irrigated crop production. Solar pump may be an alternative for irrigation for crop production especially in the off-grid areas. This paper presents the technical and economic suitability of solar pump irrigations of rice and no-rice crops in Bangladesh. Four submersible solar pumps (1050 Wp) were installed in different locations for irrigating rice, wheat and vegetables. The solar pump was used for drip irrigation and furrow irrigation for cultivation of brinjal and tomato during the winter seasons of 2010-11, 2011-12 and 2012-13. There were no significant differences of yields of brinjal between drip and furrow irrigations in the year 2010-11 in Gazipur and during 2011-12 in...
Palavras-chave: Irrigation and water management; Solar energy Solar pump; PV panel; Drip irrigation; Tomato; Brinjal; Rice.
Ano: 2014
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2836

Effective moisture conservation method for heavy soil under drip irrigation
Provedor de dados: 111
Autores: 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. &amp;nbsp;Initial lateral water movement may take a long time in such soils thus exposing surface water to high evaporation. &amp;nbsp;The vertical columns method induces water infiltration keeping the actual water surface deeper in the soil profile. &amp;nbsp;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. &amp;nbsp;A field experiment was conducted and the...
Palavras-chave: Drip irrigation; Vertical mulch; Water saving.
Ano: 2014
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2743

Effective moisture conservation method for heavy soil under drip irrigation
Provedor de dados: 111
Autores: 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

Root growth of sugarcane irrigated with wastewater through subsurface drip system
Provedor de dados: 111
Autores: Santos, Leonardo Nazário Silva dos; Barbosa, Eduardo Augusto Agnellos; Nazário, Aline Azevedo; Gonçalves, Ivo Zution; Ohashi, Augusto Yukitaka Pessinatti; Matsura, Edson Eiji; Pires, Regina Célia de Matos.
The use of wastewater in agriculture is an alternative to provide water and nutrients for plants.  However, root system development can be affected by water quality and depth of wastewater applied.  The objective of this study was to evaluate the sugarcane root system growth using a minirhizotron in a field irrigated with treated sewage effluent and freshwater by subsurface drip irrigation.  The treatments tested were two drip line installation depths (0.2 and 0.4 m); two water sources (treated sewage effluent and freshwater) and non-irrigated plots as control.  The experiment was a randomized block design with a 2×2 + 1 factorial, with three replications.  The root system evaluation (root length and spatial distribution) was performed using a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Root scanner; Minirhizotron; Drip irrigation; Time domain reflectometry (TDR); Saccharum officinarum L.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3881

EFFECT OF ALTERNATE PARTIAL ROOT ZONE DRIP IRRIGATION AND MULCHING ON ZUCCHINI
Provedor de dados: 111
Autores: 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

Modeling Hydraulic Performance of a Drip Irrigation Network Directly Coupled to a Photovoltaic Pumping System
Provedor de dados: 111
Autores: El Aissaoui, Abdellah; Hajar, El Khalfi.
Drip irrigation network coupled to photovoltaic pumping system presents an alternative solution that can efficiently improves use of water and energy by small and medium irrigated farming systems compared to conventional energy use for water pumping. Standalone photovoltaic water pumping systems (PVWPS) coupled to drip irrigation network constitute the best technico-economical solution compared to PVWPS using electrical or water storage demanding additional cost for the storage device. However, the standalone PVWPS need adequate process control to optimally be coupled with a drip irrigation network as adaptation between variable irradiance inputs and hydraulic outputs are needed to overcome problem of emission uniformity instability that can affect the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drip irrigation; Standalone; Photovoltaic pumping system; Performances; Hydraulic; Emission uniformity.
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6173

Solar pump irrigation system for green agriculture
Provedor de dados: 111
Autores: Hossain, M A; Hassan, M S; Ahmmed, S; Islam, M S.
Ever increasing fuel cost and doubtful availability of electricity hampers the irrigated crop production. Solar pump may be an alternative for irrigation for crop production especially in the off-grid areas. This paper presents the technical and economic suitability of solar pump irrigations of rice and no-rice crops in Bangladesh. Four submersible solar pumps (1050 Wp) were installed in different locations for irrigating rice, wheat and vegetables. The solar pump was used for drip irrigation and furrow irrigation for cultivation of brinjal and tomato during the winter seasons of 2010-11, 2011-12 and 2012-13. There were no significant differences of yields of brinjal between drip and furrow irrigations in the year 2010-11 in Gazipur and during 2011-12 in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irrigation and water management; Solar energy Solar pump; PV panel; Drip irrigation; Tomato; Brinjal; Rice.
Ano: 2014
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2836

Innovative Technology of Egyptian Mosques by Using Solar Energy and Reusing Ablution Water in Sustainable Crop Production
Provedor de dados: 111
Autores: Ramadan, Abdelraouf.
Egypt is nowadays facing a lot of challenges, such as limited water and energy resources. In the near future and after building El-NAHDA Dam in Ethiopia, Egypt will suffer from a severe aqueous shortage. Another fatal problem is the unavailability of getting enough energy supplies. Here, the problem of energy is a natural consequence of unsustainable development of energy patterns followed during the last decades. There are many new water resources that have not been well exploited in agriculture. One of these resources is the ablution water in the Egyptian mosques. This new resource can be managed by solar (photovoltaic) energy, as Egypt has good weather with high rates of solar radiation which can reach up to 3000 hours/year. This study cared out to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solar energy; Photovoltaic system; Reuse ablution water; Drip irrigation; Green roofs; Water and energy use efficiency.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5066

Soil water storage variability in a three-dimensional analysis in the root zone of irrigated melon
Provedor de dados: 53
Autores: Nascimento,Francisco Airdesson Lima do; Silva,Alisson Jadavi Pereira da; Campos,Allan Radax Freitas.
ABSTRACT A detailed knowledge of the soil water storage variability in the root zone can promote recommendations regarding the ideal positioning of sensors, as well as make the calculation of soil water balance more precise and accurate. This study aimed to assess soil water storage variability in the melon root zone and indicate – based on spatial variation of soil water storage – the regions of highest rootactivity of the melon crop in different development stages. Soil waterstorage was measured using time domain reflectometry (TDR) in 40 monitoring points. The data were daily collected in two periods: (i) immediately before irrigation and (ii) 30 min after irrigation. The soil water storage variation in the melon root zone occurs with greater intensity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil water balance; Drip irrigation; Irrigation management.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000400587

Mulching materials and wetted soil percentages on zucchini cultivation
Provedor de dados: 64
Autores: Silva,Gustavo Henrique da; Cunha,Fernando França da; Morais,Caio Vieira de; Freitas,Agnaldo Roberto de Jesus; Silva,Derly José Henriques da; Souza,Caetano Marciano de.
ABSTRACT Polyethylene mulch can cause serious problems in the environment. A promising alternative to polyethylene mulch is biodegradable mulch. Therefore, a two-year experiment was carried out with zucchini (Cucurbita pepo L.) during the cropping seasons of 2017 and 2018 in Southeast Brazil to investigate the effects of four soil mulching treatments (white polyethylene mulch: WP, black polyethylene mulch: BP, biodegradable mulch of brown recycled paper: RP and nonmulched: NM) and two wetted soil percentages (50 and 70% of the soil surface) using a randomized block design with five repetitions. The average water consumption of the zucchini was 157 mm in the WP treatment, 155 mm in the BP treatment, 155 mm in the WP treatment and 215 mm in the NM treatment....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodegradability; Cucurbita pepo; Drip irrigation; Water saving.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100217