Currently the South African government is advocating the cultivation of high valued crops and more efficient use of available water resources through the adoption o f more efficient irrigation technology and irrigation scheduling. A requirement of the National Water Act (Act 36 of 1998) is the...

Of water withdrawn for agricultural crop irrigation, a portion is consumed and the remainder comes back to the hydrologic system as return flows. Previous models of irrigation water demand have mostly focused on the change in withdrawals in response to price changes, even though knowledge of the...

Irrigated agriculture often leads to recharge to local and regional groundwater systems greater than what the systems can absorb, resulting in the development of shallow watertables causing salinity and waterlogging. Policy based on emissions trading offers one option for effective management of...

The nature of the seasonal water market is examined using a theoretical model andempirical evidence from the Victorian market. Drivers of the seasonal opportunitycost of water include the underlying nature of investment in the industry made in thecontext of risky entitlement yields; and the...

A water-crop simulation/mathematical programming model of irrigation water demand in northeastern Colorado is formulated to develop an original concept of derived demand for consumptive use of water. Conventional demand functions for water deliveries are also developed, and the effect of...

The objective of this paper is to provide an analysis of the sustainability of irrigated agriculture in Italy in the context of CAP reform and Water Framework Directive. The work combines scenario analysis, multicriteria mathematical programming simulation models and economic, social and...

Data from the Philippines are used to measure impacts of technical progress in lowland agriculture on upland forests. Irrigation development, labor demand, and employment are studied. Total annual labor use increased following irrigation. Employment of household members living along forest...

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In this paper the incremental values of water are calculated for irrigators in the Fish-Sundays Scheme of South Africa's Eastern Cape province. The socio-political pressure for redistribution of agricultural resources provided the imperative for this study. The model of the Fish-Sundays Scheme...

The objective of this paper is to compare the “relative†and the “absolute†impact on farmers’ income of several economic instruments which may be implemented to mitigate farmers' groundwater withdrawals in a multi-resource system. We conducted fine-tuned field work with...