SAPWAT 3 FREE DOWNLOAD

By clicking accept or continuing to use the site, you agree to the terms outlined in our Privacy Policy , Terms of Service , and Dataset License. References Publications referenced by this paper. Author Van Heerden, Pieter Schalk. The objectives of the study were: The existing incentives for water-users in the Mooi River Irrigation Scheme were weak and need to be improved to encourage farmer participation in collective water management. Skip to search form Skip to main content. The role and relevance of water-user associations as formal local water governing institutions and their linkages to informal management structures like local irrigation committees and traditional leadership are weak and require farmer training to enhance coherent institutional linkages at local level.

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The results show that agricultural water-use security can be grouped into three main dimensions, namely: Crops with relatively low gross margins like maize and dry beans yielded lower average water values of ZAR1.

Both these programs had shortcomings which made their use somewhat difficult.

JavaScript is disabled for your browser. A computerised methodology has been developed that uses measured crop water requirements and temperature data to link crop growth and development to thermal time. Water governance and institutional arrangements are critical in shaping the long-term sustainability of smallholder irrigation schemes. Predicted irrigation requirements of crops in South Africa.

To determine why this was so, and to determine future upgrade approaches that need to be considered, the level of adoption of SAPWAT was investigated.

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Improving the capacity of local institutions and management structures to minimise unsanctioned access to common pool resources CPRs may also improve water-use security. Policy proposal for irrigated agriculture in South Africa. The number of irrigation cycles and education level of the farmer explained 5. While user participation in water resource management is a South African and international principle, the question is whether smallholder farmers appreciate the importance of and possible benefits to be accrued from the participation.

This calls for strengthening of local water management systems and institutional policies to ensure maximum benefits from participating in collective activities. Irrigation in Africa in figures. In a world with a continuous reduction in per capita availability of fresh water, the increase in the sapwta of irrigation water use becomes more important as a means to postpone the time when water shortages will restrict crop production.

This can be augmented by creating mechanisms that ensure equitable sharing of resources and costs among common pool resource users. The results indicated that most farmers in the Mooi River Irrigation Scheme applied less water average of As such, the study assessed the implications of institutional arrangements on agricultural water-use security. A dapwat programme for establishing irrigation requirements and scheduling strategies in Southern Africa.

BonsorO DochartaighRichard G. If enough daily climate data are included, SAPWAT3 does consecutive year-on-year irrigation requirement calculations, which are then used to determine different levels of nonexceedance of the irrigation requirement.

Food and Agricultural Organisation of the United Nations. Furthermore, the aapwat of consecutive days per week that farmers go without access to irrigation water was used as a proxy for water scarcity, and was a significant determinant of farmer participation.

Irrigators in community-managed schemes have varying levels of water access. The economics of smallholder irrigation water management: With the eye on the efficient planning of irrigation areas, research in crop sapaat water requirements has been done over time.

What will climate change mean for ground water supply in Africa. To ensure improvement in agricultural water-use security among small-scale irrigation farmers, institutional arrangements that promote the effective participation of farmers in decision-making and conflict management mechanisms are recommended.

[PDF] Improvement of SAPWAT as an irrigation planning tool - Semantic Scholar

However, such support should mainly be through capacity building, training and provision of sapwt in irrigation management to enable the users to manage the scheme on their own, while putting mechanisms in place to ensure that irrigators pay for the maintenance of the infrastructure using returns from irrigation farming. Associated to efficient irrigation water use, is the effective use of irrigation soil as a resource. After applying Principal Component Analysis PCA to construct water-use security indices based on the desired attributes of irrigation water, the Ordinary Least Square OLS regression technique was applied to identify factors affecting water use at farm level.

This enables the user to plan crop combinations which will provide a potential income while also considering water supply constraints.

Improvement of SAPWAT as an irrigation planning tool

Various approaches and sapeat aids have been developed for the estimation of irrigation requirements. The study points to the fact that water-use security at farm level is relative and therefore no absolute measures can be applied.

The former links the climate data of a specific weather station with crop characteristics to determine a water requirement for a specified place and time. In view of the parallel arrangements between formal and informal water management structures in communally managed schemes, it is recommended that the traditional authorities be incorporated in the water-user associations as ex-officio members and be the custodians of rule enforcement at community level.