irrigator Articles
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Study on the joint probability distribution of irrigation water volume and irrigation water efficiency
Using the copula method, the joint probability distribution of irrigation water volume and efficiency is constructed, and their joint return period is also described to reveal the encounter probability of irrigation water volume and efficiency. Furthermore, the conditional probability of irrigation water efficiency with different water volumes is built to show the quantitative effects of flow ...
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A tale of two developments of irrigation: India and USA
This paper offers a comparative study of economic history of two of the four largest irrigation systems in the world covering a period of about one hundred years, and points out the major lessons learnt from development experiences. This is especially significant since one is a developing country (which was considered a "more developed" irrigation system a century ago) and the other is a ...
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Irrigation Service Contract Template
If you're not using legally-binding contracts in your irrigation business it's probably a good idea you start to. They're one of the irrigation business essentials. Not only can contracts provide legal backing in case of potential discrepancies down the road but they can also provide a foundation of information for your day-to-day operations. ...
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An analysis of groundwater irrigation expansion in India
This paper suggest that groundwater irrigation expansion in India is driven mainly by the population pressure and not necessarily dependent on the change in surface water irrigation. However, in the districts irrigated by Groundwater only, our findings indicate that the marginal effect of groundwater on Gross Irrigated Area (GIA) is lower than that in the district endowed with both surface and ...
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How does participatory irrigation management work? A study of selected water users' associations in Anand district of Gujarat, western India
Measuring the performance of water users' associations (WUAs) is a complex task. Literature associates a large number of parameters with their success and failure. This paper presents an in-depth study of two WUAs that are considered to be functioning well by the irrigation department in Anand, India. It discusses some new issues and innovations being tried out in Anand, namely: (1) ...
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Giving way to the elephant: the dynamics of participation in the management of a Balinese subak
Irrigation Communities, a common reference point for Water Users' Associations, are corporate groups that manage irrigation systems under local or indigenous charters. This paper begins by pointing out that local control in irrigation does not necessarily imply effective participatory management. It then undertakes a detailed examination of the internal dynamics of participation in an Irrigation ...
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Maintain Natural Grapevine Mechanisms Through a Drought
Discussion of practical consequences related to irrigation volume and frequency, and the need to systematically relate irrigation strategies to the effects on plant water use and fruit ...
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Irrigation Strategies - Maintain Natural Grapevine Mechanisms Through a Drought
Discussion of practical consequences related to irrigation volume and frequency, and the need to systematically relate irrigation strategies to the effects on plant water use and fruit ...
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The implementation of participatory irrigation management in Andhra Pradesh, India
This paper discusses the implementation of irrigation reform policy in the State of Andhra Pradesh, India. It reports on the impact of the introduction of participatory irrigation management (PIM) in two secondary canals (distributaries) in the Tungabhadra Right Bank Low Level Canal irrigation system. The empirical findings are that the rural elite has captured most of the seats in the water ...
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Olives - Monastir, Tunisia- Case Study
Ecotube was installed in two lines, left and right of each tree. The results of the yield were much better then what was achieved prior to ecotube with drip irrigation. The trees have developed stronger roots and used less water since the installation. Even in the hot summer month, the irrigation quantity is ...
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Factors affecting phosphorus exports from sites irrigated with abattoir wastewater
Abattoir wastewaters often contain significant quantities of phosphorus, inorganic salts, nitrogen and biodegradable organic materials. The nutrients in abattoir wastewaters are potentially useful for plant production and in many countries the application of abattoir wastewaters to land is considered a preferable option to other forms of treatment. In this paper we investigate the factors that ...
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Extracting physical homogeneous regions out of irrigation networks using fuzzy clustering method: a case study for the Ghazvin canal irrigation network
Improving the current operation and maintenance activities is one of the main steps in achieving higher performance of irrigation networks. Improving the irrigation network management, influenced by different spatial and temporal parameters, is confronted with special difficulties. One of the controversial issues often faced by decision-makers is how to cope with the spatial diversity of ...
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Irrigation demand modelling using the UKCP09 weather generator: lessons learned
The determination of irrigation demand is typically based on crop modelling using a long historic record of local daily weather data. However, there are rarely adequate weather station records near to given sites; often any local records cover a limited number of years, are incomplete, costly or are of poor quality. This paper examines whether version 1 of the UKCP09 weather generator can ...
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Book Review. The Politics of Irrigation Reform. Contested Policy Formulation and Implementation in Asia, Africa and Latin America
Peter P. Mollinga and Alex Bolding (Eds). The Politics of Irrigation Reform. Contested Policy Formulation and Implementation in Asia, Africa and Latin America. Ashgate, 2004. 31pp. ISBN 0-7546-3515-5.Keywords: book ...
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Malawi - Public private partnership options study and awareness raising for irrigation investment in Malawi
This report describes the results of a mission to support the Government of Malawi in conceiving viable Public Private Partnership (PPP) models for financially sustainable irrigation development and management in general, and carry out specific options analysis for starting a PPP process for the proposed Shire Valley Irrigation Project (SVIP). After an introduction presenting the background of ...
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Modeling irrigation management strategies to maximize cotton lint yield and water use efficiency
Increasing pumping costs and declining well capacities in the Southern High Plains compel producers to seek irrigation strategies to maximize yield and water use efficiency (WUE), which is the ratio of yield to evapotranspiration (ET). Cotton (Gossypium hirsutum L.) is suited to deficit irrigation using wells ranging from 0.29 to 0.93 L s–1 ha–1 capacity to supply limited, 2.5 mm d–1, to ...
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Lessons learned in the development of smallholder private irrigation for high-value crops in West Africa
The objective of this report is to identify and evaluate best practices in smallholder private irrigation in West Africa. The report is based on a comparative assessment of the smallholder private irrigation subsector in Burkina Faso, Mali, Niger, and Nigeria, which included a literature review, field visits, and workshops at both national and regional levels. The task lists for the assessment is ...
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Sustaining participation in irrigation systems of Ethiopia: what have we learned about water user associations?
Community participation, defined as engaging users of schemes in the decision-making processes for the planning and implementation of irrigation projects, is critical for the sustainability of irrigation schemes. This study was carried out in three regional states of Ethiopia to investigate the contribution of water user associations (WUAs) to sustaining participation in irrigation projects. ...
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Institutional response to external disturbances in spate irrigation systems of Punjab, Pakistan
Social ecological systems (SESs) - spate irrigation system in our case - operate under an environment of stress due to several external and contextual factors. Spate irrigation systems are more complex due to uncertain flows and can exhibit unexpected changes due to novel shocks. Therefore, actions directed at enhancing robustness to a particular set of disturbances can trigger changes in ...
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The effect of winter flood irrigation with saline water on groundwater in a typical irrigation area
Flood irrigation in the winter has been widely applied in northwest China for several years, but little attention has been paid to the flood irrigation program to date. In order to seek a reasonable irrigation quota, a flood irrigation experiment using two common quotas (1,800 and 1,200 m3 ha−1) was conducted in an area irrigated by saline water in the Nanjiang basin with shallow ...
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