scholarly journals Assessment of Automatic Pulse Drip Irrigation Technique on Water Application Efficiency and Water Productivity of Cucumber Crop

2021 ◽  
Keyword(s):  
Drip Irrigation ◽  
Water Productivity ◽  
Water Application ◽  
Application Efficiency ◽  
Water Application Efficiency

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.

scholarly journals Development and Evaluation of an Emitter with a Low-Pressure Drip-Irrigation System for Sustainable Eggplant Production

2019 ◽  
Vol 1 (3) ◽  
pp. 376-390 ◽  
Author(s):  
Sarker ◽  
Hossain ◽  
Murad ◽  
Biswas ◽  
Akter ◽  
...  
Keyword(s):  
South Asia ◽  
Water Use ◽  
Drip Irrigation ◽  
Crop Production ◽  
Irrigation System ◽  
Water Productivity ◽  
Low Pressure ◽  
Operating Pressure ◽  
Water Application ◽  
Sustainable Crop Production

Drip-irrigation can improve uniformity in water distribution, water use efficiency, and crop productivity in the saline and nonsaline regions of South Asia and in Bangladesh where the availability and quality of water resources are scare for sustainable crop production. However, the currently available drip-irrigation systems (DIS) have limitations especially in the design and field performance of emitters. A new type of emitter with low pressure (gravity) was developed, installed and evaluated using the locally produced materials in two locations (nonsaline and saline zones) of Bangladesh. The emitter discharge rate was measured for the variable operating heads of 1.5, 2, and 2.5 meter (m) with 0%, 1%, and 1.5% slopes with eggplant (Solanum melongena L.), a commonly grown vegetable in the region. The tested parameters of the emitter were manufacturer coefficient of variation (CVm), emission uniformity (EU), coefficient of uniformity (CU), and the statistical uniformity (Us) of water application. Our results reveal that the discharge rates of the emitter varied from 3 to 5 L h−1 under the operating head of 1.5 to 2.5 m with the slope of 0–1.5%, with better performance of the DIS at 2 m operating pressure head and for slopes of 0% and 1%. The CU of all the test parameters was more than 80%, implying that the DIS was designed and installed with appropriate dimensions for the efficient application and distribution of water to the individual plants, with the emitter performance classified as fair to excellent considering water application and distribution, as well as crop yield. The new emitter used for DIS in field conditions showed that the eggplant yield, water use, and water productivity were greater by 4.6%, 38%, and 70%, respectively, compared to farmers’ irrigation practice. We conclude that the DIS has a great prospect to save water, and could be a convenient irrigation water application method for sustainable crop production in saline and nonsaline regions of Bangladesh and similar soil and climatic conditions in South Asia.

scholarly journals Effect of deficit drip irrigation on yield and water productivity of potato crop

2021 ◽  
Vol 9 (2) ◽  
Author(s):  
Syed Ijaz-ul-Hassan ◽  
Arifa Khan ◽  
Shazia Erum
Keyword(s):  
Soil Moisture ◽  
Drip Irrigation ◽  
Tuber Yield ◽  
Potato Crop ◽  
Water Productivity ◽  
Water Application ◽  
Potato Tubers ◽  
The Right ◽  
Near Future ◽  
Adequate Management

On the eve of changing climate, it is expected that there will be a competition to reallocate water for agricultural, industrial and urban needs in near future. Thus, in view of the increased water scarcity, an adequate management for water application is required to maximize water use and increase yield. In this regard, a field trial comprising four deficit drip irrigation treatments on potato crop under drip irrigation was conducted in filed condition using RCB design with four replications. Cropwat 8.0 program was used to determine the interval and depth of next irrigation at 15, 30, 45 60% management allowable depletion (MAD) of soil moisture. The outcomes indicated that irrigation to potato crop at 30% MAD level gave the highest water productivity (17.28 kg/m3) followed by 60, 15 and 45% MAD levels. Maximum %age of medium sized tuber was achieved by applying irrigation to potato crop at 60% MAD level (65.70) followed by 30% MAD level (65.5), 45% MAD (64.0) and 15% MAD level (60.50). The incidence of scab was found 2.50%, 2.75%, 3.25% and 3.75% in potato tubers at 15, 30, 45 and 60% MAD level, respectively. Thus, growers can save the water by adopting this water saving technique without reduction in tuber yield. For proper adaptation of new technique and practice, common farmer of Pakistan should be educated in term of visits to govt. research institutions and adoptive research farms to understand the right step to words better yield.

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