Can the informal groundwater markets improve water use efficiency and equity? Evidence from a semi-arid region of Pakistan

2019 ◽  
Vol 666 ◽  
pp. 849-857 ◽  
Author(s):  
Amar Razzaq ◽  
Ping Qing ◽  
Muhammad Asad ur Rehman Naseer ◽  
Muhammad Abid ◽  
Mumtaz Anwar ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Arid Region ◽  
Use Efficiency ◽  
Groundwater Markets ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Water use of cowpea under deficit irrigation and cultivation systems in semi-arid region

2019 ◽  
Vol 23 (4) ◽  
pp. 271-276
Author(s):  
Rômulo M. O. de Freitas ◽  
Jeferson L. D. Dombroski ◽  
Francisco C. L. de Freitas ◽  
Narjara W. Nogueira ◽  
Tiago S. Leite ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Leaf Area ◽  
Water Use ◽  
Water Consumption ◽  
Arid Region ◽  
No Tillage ◽  
Use Efficiency ◽  
Semi Arid Region ◽  
Semi Arid

ABSTRACT The resilience of crops to drought depends heavily on the cultural practices adopted, which can have a direct effect on water use efficiency. The aim of this study was to assess the influence of irrigation intervals on the growth, water consumption and water use efficiency of cowpea crops (cv. BRS Guariba) under conventional and no-tillage systems. The experiment was carried out in the semi-arid region of Rio Grande do Norte, Brazil, using a split-plot in a randomised complete block design, with four replications. Treatments consisted of two cultivation systems in the whole plots (conventional and no-tillage) and six irrigation intervals in the subplots (2, 6, 10, 14, 18 and 22 days) which were applied at full bloom. The biomass of the different parts of the plant, leaf area and leaf area index were assessed at 64 days after sowing (DAS) and grain yield, water consumption and water use efficiency at 70 DAS. No-tillage is a promising cultivation technique for cowpea crops, promoting higher grain yield and water use efficiency under semi-arid conditions. This system allows cowpea cultivation with irrigation intervals of 10 or 14 days, with no or small reduction in yield, respectively.

scholarly journals Irrigation Depth and Carnauba (Copernicia prunifera) Straw Increase Water Use Efficiency in the Cherry Tomato in a Semi-Arid Region

2020 ◽  
Vol 8 (4) ◽  
pp. 629
Author(s):  
Janiquelle Da Silva Rabelo ◽  
Marcelo De Almeida Guimarães ◽  
Valsergio Barros Da Silva ◽  
Raimundo Nonato Távora Costa ◽  
Hozano De Souza Lemos Neto ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Arid Region ◽  
Ground Cover ◽  
Cherry Tomato ◽  
Maximum Productivity ◽  
Irrigation Depth ◽  
Use Efficiency ◽  
Semi Arid Region ◽  
Semi Arid

This research addresses irrigation strategies for saving water, including the use of irrigation depths of 50, 75, 100, 125 and 150% of the crop evapotranspiration (ETc) and a ground cover of carnauba straw, in evaluating the response of the cherry tomato (Solanum lycopersicum var cerasiforme L) submitted to different levels of water availability in soil with and without ground cover, in the semi-arid region of northeastern Brazil. The physiological components showed higher values under ground cover and when submitted to 100% ETc. The greatest number of total and commercial fruit was obtained when the soil was covered, and irrigated with depths of 75 and 100%. Carnauba straw with irrigation depths of 100 and 125% resulted in the greatest fresh fruit weight. The highest values for fruit diameter and length were achieved in the soil under cover. Maximum productivity, 11,404.20 kg ha-1, was obtained at 107.5%, while for the soil with no ground cover, maximum productivity was 7,778.86 kg ha-1, obtained with an irrigation depth of 140%. Based on the results, soil productivity is possible without a cover of carnauba straw, at an irrigation depth of 50.5%, which can generate savings of 3400 m³ water-cycle-1 ha-1. In addition, water use efficiency in the cherry tomato was 3.06 kg m-3 and 1.95 kg m-3, with and without ground cover respectively. It can be concluded that the use of carnauba straw makes it possible to reduce water consumption in the 'red' cherry tomato under conditions of water scarcity.

scholarly journals Productivity and Water-Use Efficiency of Sorghum in Rainfed Regime in the Semi-Arid Region of Brazil

2017 ◽  
Vol 08 (09) ◽  
pp. 2133-2148
Author(s):  
Erialdo de Oliveira Feitosa ◽  
Antonio Flávio Batista Araújo ◽  
Calorine Maria Bayma Oliveira ◽  
Fernando Bezerra Lopes ◽  
Eunice Maia de Andrade
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Arid Region ◽  
Use Efficiency ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Water use efficiency and yield of winter wheat under different irrigation regimes in a semi-arid region

2011 ◽  
Vol 02 (03) ◽  
pp. 273-282 ◽  
Author(s):  
Mohamed Hakim Kharrou ◽  
Salah Er-Raki ◽  
Ahmed Chehbouni ◽  
Benoit Duchemin ◽  
Vincent Simonneaux ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Water Use Efficiency ◽  
Water Use ◽  
Arid Region ◽  
Irrigation Regimes ◽  
Use Efficiency ◽  
Semi Arid Region ◽  
Semi Arid
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