Using TDR to Estimate Water Application Efficiency for Drip Irrigation Emitter Patterns on Banana

2010 ◽  
Author(s):  
Alisson J. P da Silva ◽  
Eugênio F Coelho ◽  
Jarbas H de Miranda
Keyword(s):  
Drip Irrigation ◽  
Water Application ◽  
Application Efficiency ◽  
Water Application Efficiency ◽  
Drip Irrigation Emitter

scholarly journals Estimating water application efficiency for drip irrigation emitter patterns on banana

2009 ◽  
Vol 44 (7) ◽  
pp. 730-737 ◽  
Author(s):  
Alisson Jadavi Pereira da Silva ◽  
Eugênio Ferreira Coelho ◽  
Jarbas Honorio de Miranda ◽  
Stephen Ray Workman
Keyword(s):  
Soil Moisture ◽  
Lateral Line ◽  
Drip Irrigation ◽  
Water Distribution ◽  
Production Cycle ◽  
Water Application ◽  
Application Efficiency ◽  
Musa Sp ◽  
Water Application Efficiency ◽  
Drip Irrigation Emitter

The objective of this work was to evaluate root and water distribution in irrigated banana (Musa sp.), in order to determine the water application efficiency for different drip irrigation emitter patterns. Three drip emitter patterns were studied: two 4-L h-1 emitters per plant (T1), four 4-L h-1 emitters per plant (T2), and five 4-L h-1 emitters per plant (T3). The emitters were placed in a lateral line. In the treatment T3, the emitters formed a continuous strip. The cultivated area used was planted with banana cultivar BRS Tropical, with a 3-m spacing between rows and a 2.5-m spacing between plants. Soil moisture and root length data were collected during the first production cycle at five radial distances and depths, in a 0.20x0.20 m vertical grid. The experiment was carried out in a sandy clay loam Xanthic Hapludox. Soil moisture data were collected every 10 min for a period of five days using TDR probes. Water application efficiency was of 83, 88 and 92% for the systems with two, four and five emitters per plant, respectively. It was verified that an increase in the number of emitters in the lateral line promoted better root distribution, higher water extraction, and less deep percolation losses.

scholarly journals AVALIAÇÃO DE KIT DE IRRIGAÇÃO POR GOTEJAMENTO UTILIZANDO ÁGUA RESIDUÁRIA

Irriga ◽  
2017 ◽  
Vol 1 (1) ◽  
pp. 110-117
Author(s):  
Roberta Daniela Da Silva Santos ◽  
Regiane De Carvalho Bispo ◽  
Kevim Muniz Ventura ◽  
Marcello Henryque Costa de Souza ◽  
Mariana Alexandre de Lima Sales
Keyword(s):  
Waste Water ◽  
Drip Irrigation ◽  
Water Distribution ◽  
Potable Water ◽  
Test Bench ◽  
Treated Wastewater ◽  
Water Application ◽  
Application Efficiency ◽  
Irrigation Uniformity ◽  
Water Application Efficiency

AVALIAÇÃO DE KIT DE IRRIGAÇÃO POR GOTEJAMENTO UTILIZANDO ÁGUA RESIDUÁRIA  ROBERTA DANIELA DA SILVA SANTOS1; REGIANE DE CARVALHO BISPO1; KEVIM MUNIZ VENTURA1; MARCELLO HENRYQUE COSTA DE SOUZA1 E MARIANA ALEXANDRE DE LIMA SALES1 1Programa de Pós-Graduação em Irrigação e Drenagem, Universidade Estadual Paulista “Júlio de Mesquita Filho”- UNESP/FCA, Rua Dr. José Barbosa de Barros, 1780, Botucatu, SP, [email protected], [email protected], [email protected], [email protected], [email protected]  1 RESUMO A produtividade agrícola em sistemas irrigados está diretamente relacionada com a uniformidade de distribuição de água para as plantas. Avaliar periodicamente essa distribuição de água é fundamental, pois a irregularidade desse parâmetro, pode causar desperdícios de água e energia, além de prejudicar a rentabilidade da propriedade. Desta forma, o objetivo deste trabalho foi comparar a eficiência de aplicação de água do kit de gotejamento – Dripkit, novo e após 15 meses instalado em campo, operando com água residuária tratada. A avaliação foi realizada no Laboratório de Hidráulica do Departamento de Engenharia Rural da Faculdade de Ciências Agronômicas – FCA/UNESP, campus Botucatu-SP e foi conduzido conforme as recomendações da Norma ISO 9261:2004, utilizando água de abastecimento público, fornecida pela Companhia de Saneamento Básico do Estado de São Paulo (Sabesp). A avaliação foi realizada na bancada de ensaios para tubos gotejadores e foram calculados os coeficientes de uniformidade de Christiansen, de distribuição, de uniformidade estatístico e eficiência de aplicação. Na mangueira usada, os parâmetros CUC, CUD, CUE e EA, foram classificados como ruim, razoável, inaceitável e inaceitável, respectivamente.Palavras-chave: Irrigação localizada, uniformidade, distribuição, eficiência de aplicação.  SANTOS, R. D. S.; BISPO, R. de C.; VENTURA, K. M.; SOUZA, M. H. C.; SALES, M. A. L.EVALUATION OF A DRIPPING IRRIGATION KIT THAT USES WASTEWATER  2 ABSTRACT Agricultural productivity in irrigated systems is directly related to the uniformity of distribution of water to the plants. The periodical evaluation of this water distribution is fundamental, since an irregularity in this parameter may waste water and energy, as well as undermine the profitability of the property. In this way, the purpose of this work is to compare the water application efficiency of the drip kit – Dripkit after 15 months of use in the field, operating with treated wastewater. The test was carried out in the Hydraulic Laboratory of the Department of Rural Engineering of the Faculty of Agronomic Sciences - FCA / UNESP, Campus Botucatu-SP and was conducted in accordance with the ISO 9261: 2004 standards, using potable water. The evaluation was performed on a test bench for dripping irrigation and the uniformity, Christiansen, distribution and statistical coefficients were calculated. The CUC, CUD, CUE and EA parameters were classified as bad, regular, unacceptable and unacceptable, respectively. Keywords: Drip irrigation, uniformity, distribution, application efficiency.

Evaluating water application efficiency of low and mid elevation spray application under changing weather conditions

2019 ◽  
Vol 221 ◽  
pp. 84-91 ◽  
Author(s):  
Abid Sarwar ◽  
R. Troy Peters ◽  
Hani Mehanna ◽  
Mohamma Zaman Amini ◽  
Abdelmoneim Zakaria Mohamed
Keyword(s):  
Weather Conditions ◽  
Water Application ◽  
Spray Application ◽  
Application Efficiency ◽  
Water Application Efficiency

scholarly journals Application Method Affects Water Application Efficiency of Spray Stake-irrigated Containers

HortScience ◽  
1993 ◽  
Vol 28 (6) ◽  
pp. 625-627 ◽  
Author(s):  
William F. Lamack ◽  
Alex X. Niemiera
Keyword(s):  
Application Rate ◽  
Pine Bark ◽  
Control Treatment ◽  
Water Application ◽  
Continuous Irrigation ◽  
Application Efficiency ◽  
Moisture Deficit ◽  
Continuous Application ◽  
Water Application Efficiency ◽  
Application Volume

Studies were conducted to evaluate the effect of water application medium moisture deficit, water application rate, and intermittent application on water application efficiency {[(amount applied - amount leached)/amount applied] x 100} of spray stake-irrigated, container-grown plants. Pine bark-filled containers were irrigated to replace moisture deficits of 600, 1200, or 1800 ml; deficits were returned in single, continuous applications of 148, 220, or 270 ml·min-l. Efficiency was unaffected by application rate but decreased with increased medium moisture deficit. In the second experiment, container medium at a 600-ml deficit was irrigated with 400 or 600 ml (6570 and 100% water replacement, respectively); deficits were returned in a single, continuous application or in intermittent 100-ml applications with 30-min intervals between irrigations. Application efficiency was greater with intermittent irrigation (95% and 84% for 400- and 600-ml replacement, respectively) than with continuous irrigation (84% and 67% for 400- and 600-ml replacement, respectively). In the third experiment, pine bark was irrigated with 600 ml water (100% replacement) in 50-, 100-, or 150-ml aliquots with 20, 40, or 60 min between applications in a factorial design. Efficiency increased with decreasing application volume and increasing time between applications. Highest efficiency (86%) was achieved with an irrigation regimen of 50-ml applications with at least 40 min between applications, compared to 62% for the control treatment (a single, continuous application of 600 ml). Our results suggest that growers using spray stakes would waste less water by applying water intermittently rather than continuously.

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