scholarly journals Linear Optimization Model for Efficient Use of Irrigation Water

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Wafa Difallah ◽  
Khelifa Benahmed ◽  
Belkacem Draoui ◽  
Fateh Bounaama
Keyword(s):  
Linear Programming ◽  
Water Use ◽  
Knapsack Problem ◽  
Water Consumption ◽  
Irrigation Water ◽  
Optimization Model ◽  
Field Experiments ◽  
Programming Model ◽  
Linear Optimization ◽  
Linear Optimization Model

The implementation of innovative and efficient irrigation techniques is among the greatest challenges facing agriculture. In this regard, a linear programming model is presented in order to optimize water use. The idea behind this model is to assess the effectiveness or ineffectiveness of precipitation to determine the amount of irrigation water required to optimize water use. To achieve this idea, the “knapsack” problem decisional form was used, and the combination of the linear programming and the above-mentioned form proved satisfactory. Field experiments were conducted in Algeria. Based on calculated budgets a model using linear programming was developed. A comparison between the model results and the field findings suggests that the model could reduce water consumption by 28.5%.

scholarly journals LINEAR OPTIMIZATION MODEL OF URBAN AREAS’ OPERATING EFFICIENCY

Transport ◽  
2007 ◽  
Vol 22 (3) ◽  
pp. 225-228 ◽  
Author(s):  
Katalin Tanczos ◽  
Arpad Torok
Keyword(s):  
Land Use ◽  
Linear Programming ◽  
Urban Area ◽  
Optimization Model ◽  
Urban Areas ◽  
Programming Model ◽  
Linear Optimization ◽  
Urban Transportation ◽  
Operating Efficiency ◽  
Linear Optimization Model

The efficiency of urban transportation is getting more and more important because of the increasing rate of mobility demand. To plan, control and organize urban transportation in the most efficient way, we also need to consider the aspects of land use. To handle both of the mentioned urban planning areas together, we shall develop models, which are able to pay attention to all of their restrictive factors in the most simple way. It is a possible solution to simulate the urban area through a linear programming model.

A strong integer linear optimization model to the compartmentalized knapsack problem

2019 ◽  
Vol 26 (5) ◽  
pp. 1633-1654
Author(s):  
John J. Quiroga‐Orozco ◽  
J.M. Valério de Carvalho ◽  
Robinson S. V. Hoto
Keyword(s):  
Knapsack Problem ◽  
Optimization Model ◽  
Linear Optimization ◽  
Linear Optimization Model ◽  
Integer Linear Optimization

scholarly journals Corrigendum to “Linear Optimization Model for Efficient Use of Irrigation Water”

2018 ◽  
Vol 2018 ◽  
pp. 1-1
Author(s):  
Wafa Difallah ◽  
Khelifa Benahmed ◽  
Belkacem Draoui ◽  
Fateh Bounaama
Keyword(s):  
Irrigation Water ◽  
Optimization Model ◽  
Linear Optimization ◽  
Linear Optimization Model

scholarly journals An Analytical View on Water Use Efficiency of Some Main Crops Grown in the Non-costal Parts of Thrace Region

2020 ◽  
pp. 47-57
Author(s):  
Recep Cakir
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Field Experiments ◽  
Soil Depth ◽  
Growth Stages ◽  
Irrigation Water Use ◽  
Rainfed Farming ◽  
Use Efficiency ◽  
Thrace Region

The article contains data obtained from evaluations related to irrigation water use efficiency (IWUE) and water use efficiency (WUE), for the main crops, irrigated at different stages of growth, on the basis of some findings obtained in the Research Institute in Kırklareli. Each of the experimental crops was sown and farmed following procedures applied by the farmers in the region, except of the irrigation applications which were based on the sensitivity of a certain crop to water shortage in the soil, during the specific growth stages. Similar procedures were applied and all the experimental treatments were irrigated at growth stages, as predicted in the research methodology, and water amounts required to fill the 0-90 cm soil depth to field capacity were implied. Evaluation data obtained from the field experiments with three major crops, grown on the non-coastal lands of Thrace Region showed, that the productivity of irrigation water, as well as water use efficiencies of all analysed crops, are growth stage controlled. The highest IWUE and WUE efficiencies of 0.87 and 0.92 kg da-1 m-3; and 1.08 kg da-1 m-3 and 0.81 kg da-1 m-3; were determined for wheat and sunflower crops, irrigated at booting and flowering stages, respectively. Each m3 of irrigation water, applied during the most sensitive fruit formation stage (Ff) of pumpkin crop, provided additionally 8.47 kg da-1 fruit yield, 8.09 fruit numbers and 0.28 kg da-1 seed yields, more than those of rainfed farming (R).

Studies on Transpiration Suppressants on Spring Sorghum in North-Western India in Relation to Soil Moisture Regimes. I. Effect on Yield and Water Use Efficiency

1984 ◽  
Vol 20 (2) ◽  
pp. 151-159
Author(s):  
D. Boobathi Babu ◽  
S. P. Singh
Keyword(s):  
Soil Moisture ◽  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Field Experiments ◽  
Western India ◽  
Moisture Regimes ◽  
Use Efficiency ◽  
Effect On Yield ◽  
North Western

SUMMARYThe results of field experiments conducted in the spring seasons (February/March to June) of 1980 and 1981 indicate that grain yields of sorghum increased with increase in frequency of irrigation. Crops sprayed with atrazine or CCC yielded more than the unsprayed control; maximum yields were obtained by the application of atrazine at 200 g ha−1. Water use efficiency decreased with increase in irrigation but increased as a result of spraying crops with either chemical. Irrigation water can be saved by the spraying of atrazine or CCC onto spring-sown sorghum.

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