Water demand and irrigation investment with reference to the proposed Rakaia Irrigation Scheme
The objective of this study is to establish the economic demand function for irrigation water in the area proposed as the Rakaia Irrigation Scheme. The analysis is dominated by the limitations of the deterministic approach used as the framework for the linear programming study. Data used in the study were based on three separate sample surveys of the farmers in the region and upon information supplied by consultants and scientists whose knowledge was appropriate. In the first chapter the consequences of using a deterministic or stochastic seasonal construct with which to examine the derived demand for irrigation water within a region is examined. The first section of the second chapter describes the productive characteristics of the region before irrigation development. Succeeding sections are devoted to the development of the integer linear programming model which was used to derive the demand function by sequential optimisations, problems in the execution of the programming analysis, the results of the analysis and an analysis of factors which have important effects on the temporal transition rate from dryland to irrigation. The last section of Chapter Two is devoted to an examination of a monetary mechanism which is shown to have an important inflationary effect. The implications of the effect for irrigation development and for national policies are discussed. Finally in Chapter three, two institutional matters of particular concern for irrigation development are discussed; the first concerns the method of pricing water for irrigation schemes and the second some particular problems in the present legislation affecting the appeal provisions necessary to ensure that social welfare is maximised when public funds are invested in large scale irrigation projects.... [Show full abstract]
Keywordsirrigation; irrigation schemes; water pricing; water resources; irrigation investment; Rakaia Irrigation Scheme
Fields of Research079901 Agricultural Hydrology (Drainage, Flooding, Irrigation, Quality, etc.); 140201 Agricultural Economics
Access RightsDigital thesis can be viewed by current staff and students of Lincoln University only. Print copy available for reading in Lincoln University Library. May be available through inter-library loan.
Showing items related by title, author, creator and subject.
Tescos, Nicolas (Lincoln College, University of Canterbury, 1989)Poor performance and mechanical failures of travelling irrigators are caused by improper overall system and power unit design. Power and winching units reviewed showed that water-motors and cable-winches are popular in ...
Smart, Graeme M. (Lincoln University, 1978)Computer-based techniques for assessment of irrigation water supply and demand are illustrated using a 140 x 75 km discrete element representation of the Canterbury Plain, New Zealand. A versatile soil moisture accounting ...
Copland, A. A. (Canterbury Agricultural College, University of New Zealand, 1939)During the past, irrigation in New Zealand has been practised to a very limited extent and until the completion of the Redcliff and Levels Schemes was confined solely to Central Otago where an area of some 68,000 acres has ...