scholarly journals Determination of Best and Worst Possibilities of Sub-Units of Drip Irrigation System on a Rectangular Field Considering Hydraulic and Economic Analysis

2017 ◽  
Vol 10 (01) ◽  
pp. 37-45
Author(s):  
A.A. Kaneria ◽  
T.M.V. Suryanarayana
2021 ◽  
Vol 33 (1) ◽  
pp. 57-65
Author(s):  
Vinay B Patil ◽  
B K Desai ◽  
R Harischandra Naik ◽  
B G Masthana Reddy ◽  
M Bheemanna

2018 ◽  
Vol 14 (3) ◽  
pp. 513
Author(s):  
Sandeep Kumar Pandey ◽  
A.K. Jain ◽  
Rakesh Sharda ◽  
Pankaj Sharma ◽  
Abhijit Joshi

Irriga ◽  
2017 ◽  
Vol 22 (3) ◽  
pp. 575-590
Author(s):  
Natalia Prado Fortuna Macan ◽  
Tamara Maria Gomes ◽  
Fabrício Rossi ◽  
Giovana Tommaso

DESEMPENHO DA IRRIGAÇÃO POR GOTEJAMENTO COM O USO DE EFLUENTE DE LATICÍNIO TRATADO POR PROCESSO BIOLÓGICO  NATALIA PRADO FORTUNA MACAN1; TAMARA MARIA GOMES2; FABRÍCIO ROSSI3 E GIOVANA TOMMASO4 1Eng. de Biossistemas, Mestranda em Engenharia Agrícola, FEAGRI/UNICAMP, Av. Cândido Rondon, 501 - Cidade Universitária, Campinas - SP, 13083-875, Brasil. E-mail: [email protected]. de Biossistemas, Profa. Doutora no Depto. de Engenharia de Biossistemas, FZEA/USP, Pirassununga-SP, R. Duque de Caxias, 225 - Campus Fernando Costa, Pirassununga - SP, 13635-900 Brasil. E-mail: [email protected]. de Biossistemas, Prof. Doutor, Depto. de Engenharia de Biossistemas, FZEA/USP, Pirassununga-SP, Brasil. E-mail: [email protected]. 4Eng. de Alimentos, Profa. Doutora, Depto. de Engenharia de Alimentos, FZEA/USP, Pirassununga-SP, Brasil. E-mail: [email protected]  1 RESUMO Os laticínios geram efluentes que podem ser reaproveitados na irrigação. No entanto, o efeito desses efluentes nos sistemas de irrigação ainda é pouco estudado. Assim, os objetivos desse trabalho foram caracterizar o efluente de laticínio tratado por processos biológicos, classifica-lo quanto ao potencial de entupimento de emissores e avaliar a uniformidade do sistema de irrigação por gotejamento por meio da determinação dos coeficientes de uniformidade de distribuição (CUD), de Christiansen (CUC) e estatístico (CUE). O delineamento experimental foi em blocos casualizados, em esquema fatorial 3 x 3, com quatro repetições e avaliações dos coeficientes ao longo do tempo. Os tratamentos foram constituídos de três fontes de água: água de abastecimento (AB); efluente de laticínio tratado por sistema anaeróbio (EAN) e por sistema aeróbio (EA); e por três lâminas de irrigação, 50% (W1), 100% (W2) e 150% (W3) da evapotranspiração da cultura da beterraba. Após 40 horas de funcionamento, CUD, CUC e CUE foram classificados como “Excelente”, com valores superiores a 96%. As diferentes lâminas aplicadas não influenciaram nos coeficientes. Entretanto, ao longo do tempo, as três fontes de água utilizadas ocasionaram diminuição do CUD, CUC e CUE, sendo que a maior redução foi encontrada nas parcelas que utilizaram efluente anaeróbio. Palavras-chave: água residuária, reúso, coeficiente de uniformidade, gotejador, tratamento anaeróbio e aeróbio.  MACAN, N. P. F.; GOMES, T. M.; ROSSI, F.; TOMMASO, G.PERFORMANCE OF DRIP IRRIGATION SYSTEM USING DAIRY EFFLUENT TREATED BY BIOLOGICAL PROCESS  2 ABSTRACT The dairy industry produces effluents that can be reused on irrigation. However, the effect of these effluents on the irrigation systems is still little studied. Thus, the goals of this work were to characterize the dairy effluent treated by biological processes, classify it for its potential to cause emitter clogging, and evaluate the drip irrigation system uniformity by determination of emission uniformity coefficient (EUC), Christiansen coefficient (CUC), and Statistical uniformity coefficient (SUC). The experimental design was performed in randomized blocks, with a 3 x 3 factorial design, four replications, and coefficients evaluation over the time.  The treatments consisted of three types of water: freshwater (AB), dairy effluent treated by anaerobic processes (EAN), and effluent treated by aerobic processes (EA) at three irrigation depths – 50% (W1), 100% (W2), and 150% (W3) – of the estimated table beet evapotranspiration. After 40 hours of irrigation, EUC, CUC e SUC were classified as excellent, with values greater than 96%. The different irrigation depths did not affect the uniformity coefficients. However, the use of the three water sources led to EUC, CUC and SUC reduction over time, and the largest reduction was found on plots that used anaerobic effluent. Keywords: agro-industry, uniformity coefficient, emitter, reuse, anaerobic and aerobic treatment. 


Author(s):  
J.N. Abedalrahman ◽  
R.J. Mansor ◽  
D.R. Abass

A field experiment was carried out in the field of the College of Agriculture / University of Wasit, located on longitude  45o   50o   33.5o   East and latitude 32o 29o 49.8o North, in Spring season of the agricultural season 2019, in order to estimate the water consumption of potato crop using SWRT technology and under the drip irrigation system. The experiment was designed according to Randomized Complete Block Design (RCBD) with three replications and four treatments that include of the SWRT treatment (the use of plastic films under the plant root area in an engineering style), and the treatment of vegetal fertilizer (using Petmos), organic fertilizer (sheep manure), and the control treatment . Potato tubers (Solanum tuberosum L.)  var. Burin was planted for spring season on 10/2/2019 at the soil depth of 5-10 cm. The highest reference water consumption for the potato crop during the season was calculated by Najeeb Kharufa, which was 663.03 mm. The highest actual water consumption for the potato crop during the season for the control treatment was 410.1 mm. The results showed increase in the values of the crop coefficient (Kc) in the stages of tubers formation and tubers filling stage as compared to the vegetative and ripening stages, ranged from 1.37-1.92 for the two stages of tubers formation and tubers filling. The SWRT treatment gave the highest water use efficiency during the season, was 3.46 kg m-3 .


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