Peddling Toward Prosperity: Profile #1 Building Markets for Micro-Irrigation Systems in Asia and Africa

2010 ◽  
Author(s):  
Philip E. Auerswald ◽  
Nicholas Sullivan
Keyword(s):  
Irrigation Systems ◽  
Micro Irrigation

scholarly journals Theoretical basis and significance of the variance of discharge as a bidimensional variable for the design of lateral lines of micro-irrigation

2009 ◽  
Vol 66 (4) ◽  
pp. 563-569
Author(s):  
Euro Roberto Detomini ◽  
Brendan Power ◽  
José Antônio Frizzone
Keyword(s):  
Independent Random Variable ◽  
Theoretical Basis ◽  
Systems Design ◽  
Statistical Design ◽  
Random Variable ◽  
Point Of View ◽  
Soil Slope ◽  
Irrigation Systems ◽  
Lateral Lines ◽  
Micro Irrigation

In order to support the theoretical basis and contribute to the improvement of educational capability issues relating to irrigation systems design, this point of view presents an alternative deduction of the variance of the discharge as a bidimensional and independent random variable. Then a subsequent brief application of an existing model is applied for statistical design of laterals in micro-irrigation. The better manufacturing precision of emitters allows lengthening a lateral for a given soil slope, although this does not necessarily mean that the statistical uniformity throughout the lateral will be more homogenous.

Performance of pea under different irrigation systems

2016 ◽  
Author(s):  
K.V. Ramana Rao ◽  
Suchi Gangwar ◽  
Arpna Bajpai ◽  
Ravish Keshri ◽  
Lavesh Chourasia ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
Irrigation System ◽  
Sprinkler Irrigation ◽  
Sprinkler System ◽  
Crop Water ◽  
Flood Irrigation ◽  
Irrigation Systems ◽  
Weekly Basis ◽  
Agricultural Engineering ◽  
Micro Irrigation

The field experiment was conducted at Precision Farming Development Centre, Central Institute of Agricultural Engineering, Bhopal on influence of different irrigation methods in three continuous years (2010-2013) on the performance pea crop. Conventional flood irrigation, micro sprinkler and drip irrigation systems were adopted as three treatments and with seven replications in each treatment in the study. Pea (Arkel variety) crop was sown at a spacing of 45 X 10 cm. During the period of experiment flood irrigation were applied on weekly basis and micro irrigation and drip irrigation systems were operated every third day to meet the crop water requirement. The total quantity of water applied in flood, drip irrigation and micro sprinkler systems were 387.5, 244.7 and 273.5 mm respectively. Maximum crop yield was observed under micro sprinkler system (98.60 q/ha) followed by drip and conventional irrigation system. Saving of water was found better under drip irrigation over micro sprinkler irrigation system.

A simulation model for design and evaluation of micro-irrigation systems

2001 ◽  
Vol 50 (4) ◽  
pp. 323-334 ◽  
Author(s):  
C.M.G. Pedras ◽  
L.S. Pereira
Keyword(s):  
Simulation Model ◽  
Irrigation Systems ◽  
Micro Irrigation

scholarly journals Economic Feasibility of Micro-Irrigating Container-Grown Landscape Plants

1997 ◽  
Vol 15 (1) ◽  
pp. 23-29
Author(s):  
J.J. Haydu ◽  
R.C. Beeson
Keyword(s):  
Reclaimed Water ◽  
Acer Rubrum ◽  
Past Research ◽  
Economic Feasibility ◽  
Economic Returns ◽  
Irrigation Systems ◽  
Quercus Virginiana ◽  
Landscape Plants ◽  
Potential Impact ◽  
Micro Irrigation

Abstract While past research has examined certain technical efficiencies, little effort has been directed at the economic feasibility of various irrigation systems for container-grown landscape plants. Two irrigation systems, cyclic micro-irrigation and overhead impact sprinkler, were examined to determine economic advantages of one system over the other for container-grown landscape plants. Seedlings of Acer rubrum L. and Quercus virginiana Mill. produced in #3, #7, #10 and #15 (10.2, 26.5, 37.8, and 56.8 liter) polyethylene containers were considered. A two-step methodology was used to establish the biological and economic parameters of the study. Three major conclusions were arrived at in this paper. First, with the exception of the smallest container size, there was little difference in initial investment costs and variable costs of production between the two systems. Second, water costs were shown to be prohibitive for larger container sizes when reclaimed water is used in conjunction with overhead systems. Third, the potential impact of cyclic microirrigation on a firm's economic returns were shown to be positive. Cyclic micro-irrigation markedly speeds up the production process, utilizes less material inputs and a fraction of the water of an overhead system.

scholarly journals Filter and emitter performance of micro-irrigation systems using secondary and tertiary effluents

2008 ◽  
Author(s):  
M. Duran-Ros ◽  
J. Puig-Bargués ◽  
J. Barragán ◽  
G. Arbat ◽  
F. Ramírez de Cartagena
Keyword(s):  
Irrigation Systems ◽  
Micro Irrigation

scholarly journals Local head loss caused in connections used in micro-irrigation systems

2019 ◽  
Vol 23 (7) ◽  
pp. 492-498 ◽  
Author(s):  
Wagner W. Á. Bombardelli ◽  
Antonio P. de Camargo ◽  
José A. Frizzone ◽  
Rogério Lavanholi ◽  
Hermes S. da Rocha
Keyword(s):  
Flow Rate ◽  
Head Loss ◽  
International Standards ◽  
Flow Conditions ◽  
Irrigation Systems ◽  
Head Losses ◽  
Satisfactory Performance ◽  
Head Loss Coefficient ◽  
Micro Irrigation ◽  
The One

ABSTRACT Information about local head loss caused by connections employed in micro-irrigation systems is hard to be found in literature. The objective of this research was to experimentally determine the local head losses in connections commonly used in micro-irrigation and propose mathematical models using the theorem of Buckingham. The methodology of tests was based on international standards. The tests were carried out under controlled inlet pressure, at 150 kPa, and five to ten units of each connection model were tested. The curves relating flow and head losses were drawn based on 15 flow conditions, obtained under increase and decrease of flow rate. For each condition, 30 points were collected resulting in a sample size of 900 points in each test. For each connection model evaluated, the following information was obtained: curves of local head loss as a function of flow rate and of local head loss coefficient (KL). The obtained values of KL ranged from 2.72 to 24.16, which become constant for Reynolds number higher than 10,000. The sensitivity of the coefficient related to a ratio of the internal sections in the connections was also verified. The flow exponents presented values close to the one applied by the Darcy-Weisbach equation (m = 2). The models developed for the connections presented a satisfactory performance.

Improving Water Use Efficiency of Rice-Wheat Cropping System by Adopting Micro-Irrigation Systems

2015 ◽  
Vol 6 (3) ◽  
pp. 341 ◽  
Author(s):  
Raj Pal Meena ◽  
R. K. Sharma ◽  
R. S. Chhokar ◽  
Subhash Chander ◽  
S. C. Tripathi ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Cropping System ◽  
Irrigation Systems ◽  
Use Efficiency ◽  
Micro Irrigation
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