scholarly journals Irrigation Management of Subsurface Drip Irrigation of Palm Trees under Arid and Semiarid Regions

2019 ◽  
Vol 23 (1) ◽  
pp. 133-148
Author(s):  
N. Salamati ◽  
H. Dehghanisanij ◽  
L. Behbahani ◽  
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EDIS ◽  
2013 ◽  
Vol 2013 (4) ◽  
Author(s):  
Lincoln Zotarelli ◽  
Libby Rens ◽  
Charles Barrett ◽  
Daniel J. Cantliffe ◽  
Michael D. Dukes ◽  
...  

In terms of water use efficiency, the traditional seepage irrigation systems commonly used in areas with high water tables are one of the most inefficient methods of irrigation, though some irrigation management practices can contribute to better soil moisture uniformity. Subsurface drip irrigation systems apply water below the soil surface by microirrigation, improving the water distribution and time required to raise the water table for seepage irrigation. This 6-page fact sheet was written by Lincoln Zotarelli, Libby Rens, Charles Barrett, Daniel J. Cantliffe, Michael D. Dukes, Mark Clark, and Steven Lands, and published by the UF Department of Horticultural Sciences, March 2013. http://edis.ifas.ufl.edu/hs1217


2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Moncef Hammami ◽  
Khemaies Zayani ◽  
Hédi Ben Ali

Subsurface drip irrigation (SDI) is one of the most promising irrigation systems. It is based on small and frequent water supplies. Because SDI emitters are buried, their discharges are dependent on the water status at the vicinity of the outlets. This paper was targeted to design the SDI laterals accounting for the soil water-retention characteristics and the roots water extraction. The proposed approach provides systematic triggering and cut-off of irrigation events based on fixed water suctions in the vadose zone. In doing so, the soil water content is maintained at an optimal threshold ascertaining the best plant growth. Knowing the soil water-retention curve, the appropriate water suction for the plant growth, and the emitter discharge-pressure head relationship, the developed method allows the computation of the required hydraulics of the lateral (e.g., inlet pressure head, inside diameter, etc.). The proposed approach is a helpful tool for best SDI systems design and appropriate water management. An illustrative example is presented for SDI laterals’ design on tomato crop.


Irriga ◽  
2008 ◽  
Vol 13 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Alexandre Barcellos Dalri ◽  
Raimundo Leite Cruz ◽  
Carlos Jesus Baca Garcia ◽  
Luiza Helena Duenhas

IRRIGAÇÃO POR GOTEJAMENTO SUBSUPERFICIAL NA PRODUÇÃO E QUALIDADE DE CANA-DE-AÇÚCAR  Alexandre Barcellos Dalri1; Raimundo Leite Cruz2; Carlos Jesus Baca Garcia3; Luiza Helena Duenhas 41Departamento de Ciências Agrárias, Centro Universitário Moura Lacerda, Ribeirão Preto, SP,  [email protected] de Engenharia Rural, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Botucatu, SP 3Departamento de Engenharia Agrícola, Faculdade de Agronomia e Zootecnia, Universidade Nacional de San Antonio Abad del Cusco, Cusco-Peru4Conselho Nacional de Desenvolvimento Científico e Tecnológico – CNPq  1 RESUMO             No Brasil, a cana-de-açúcar é predominantemente cultivada em condições de sequeiro. Entretanto, muitas vezes a irrigação está presente nas agriculturas tecnificadas, pois se traduz em maiores produtividades, melhor qualidade do produto e independência de chuva. Este trabalho teve como objetivo o estudo da freqüência de irrigação por gotejamento subsuperficial no desenvolvimento da cana-de-açúcar, no primeiro ciclo de cultivo. Os tratamentos foram definidos pela freqüência da irrigação: o sistema de irrigação era acionado quando a evapotranspiração da cultura superasse 10 mm, 20 mme 30 mm, para os tratamentos L1, L2 e L3, respectivamente. O tratamento L0 foi definido como testemunha (não irrigado). A irrigação por gotejamento subsuperficial não alterou a qualidade da cana-de-açúcar e não houve diferença estatística entre as diferentes freqüências de irrigação, para produtividade. Todavia, comparados à testemunha, os tratamentos L1, L2 e L3 proporcionaram incremento de produtividade de 47,33%, 58,53%, e 39,86%, respectivamente. UNITERMOS: freqüência de irrigação, manejo de irrigação, análise tecnológica.  DALRI, A. B.; DUENHAS, L. H.; GARCIA, C. J. B.; CRUZ, R. L. SUBSURFACE DRIP IRRIGATION ON SUGARCANE YIELD AND QUALITY   2 ABSTRACT             In Brazil, sugarcane is mostly cropped in dry land conditions. However, it is known that irrigation is present in advanced agriculture, because of its higher yields, better product quality and rainfall independence. This work aimed to study subsurface drip irrigation frequencies on sugarcane development during the first season. Treatments were defined by different irrigation frequencies: irrigation system were turned on when evapotranspiration reached 10 mm, 20 mm, and 30 mm, for treatments L1, L2, and L3, respectively. Treatment L0 was defined as control (non-irrigated). It was observed that subsurface drip irrigation did not affected sugarcane quality and there was no statistical difference among different irrigation frequencies for yield. However, when compared to the control, treatments L1, L2 and L3 showed yield increase of 47.33%, 58.53%, and 39.86%, respectively.KEY WORDS: irrigation frequency, irrigation management, technological analysis.


2002 ◽  
Vol 66 (1) ◽  
pp. 178 ◽  
Author(s):  
Thomas L. Thompson ◽  
Thomas A. Doerge ◽  
Ronald E. Godin

2000 ◽  
Vol 42 (1-2) ◽  
pp. 75-79 ◽  
Author(s):  
C. Campos ◽  
G. Oron ◽  
M. Salgot ◽  
L. Gillerman

A critical objective for any wastewater reuse programme is to minimise health and environmental hazard. When applying wastewater to soil–plant systems, it is to be noted that the passage of water through the soil considerably reduces the number of microorganisms carried by the reclaimed wastewater. Factors that affect survival include number and type of microorganisms, soil organic matter content, temperature, moisture, pH, rainfall, sunlight, protection provided by foliage and antagonism by soil microflora. The purpose of this work was to examine the behaviour of fecal pollution indicators in a soil irrigated with treated wastewater under onsurface and subsurface drip irrigation. The experiment was conducted in a vineyard located at a commercial farm near the City of Arad (Israel). Wastewater and soil samples were monitored during the irrigation period and examined for fecal coliforms, somatic and F+ coliphages and helminth eggs. Physico-chemical parameters were controlled in order to determine their relationship with removal of microorganisms. The results showed high reduction of the concentration of microorganisms when wastewater moves through the soil; and a good correlation between the reduction of fecal pollution indicators and moisture content, organic matter concentration and pH. The application of secondary treated domestic wastewater in this specific soil and under these irrigation systems affect the survival of microorganisms, thus reducing the health and environmental risk.


2019 ◽  
pp. 397-404
Author(s):  
J.V. Prado-Hernández ◽  
F.R. Hernández-Saucedo ◽  
M. Carrillo-García ◽  
J. Pineda-Pineda ◽  
A.H. Gutiérrez-Campos ◽  
...  

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