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The impact of irrigation

Land transformation in agriculture: 115-131

The impact of irrigation

The transformation of land by irrigation includes surface changes as a result of land clearance and levelling, construction of furrows etc.; and in-depth changes resulting from the alteration of the water balance, including four deleterious transformations: waterlogging; salinization; seawater intrusion into coastal aquifers and rivers; and land subsidence. Examples from Pakistan, Israel, Thailand and Arizona are described.

Accession: 001709955

Related references

Rosegrant, M.W., 1992: The impact of irrigation on production and income variability: simulation of diversion irrigation in the Philippines. Irrigation not only contributes to increased crop production but may also reduce variability in production through improved control of the crop environment. However, the dependence of modern seed-fertilizer technology on irrigation and fertilizer,...

Patel, A.S., 1981: Irrigation: its employment impact in the command areas of medium irrigation projects in Gujarat. The impact of irrigation on employment at the farm level in the proposed command areas of 24 different medium irrigation projects, 12 each in the Saurashtra region and in Gujarat is analyzed. In all, 2400 randomly selected farm households, 100 fro...

Kloezen, W.H.; Garces Restrepo, C.; Johnson, S.H.I.I., 1997: Impact assessment of irrigation management transfer in the Alto Rio Lerma irrigation district, Mexico. This study reports on the findings of a 2-year field research study started by IIMI late in 1995 in the 112 772 ha Alto Rio Lerma Irrigation District (ARLID), Mexico. The study tests the hypothesis that, in general, irrigation management transfer...

Madar Samad, 2002: Impact of irrigation management transfer on the performance of irrigation systems: a review of selected Asian experiences. During the last two decades, transferring the responsibility for irrigation management from government agencies to farmer associations has been a dominant component of irrigation-sector policy in several Asian countries. This paper synthesizes the...

Feng ZhaoZhong; Wang XiaoKe; Feng ZongWei, 2005: Soil N and salinity leaching after the autumn irrigation and its impact on groundwater in Hetao Irrigation District, China. Soil water and salinity are crucial factors influencing crop production in arid regions. An autumn irrigation system employing the application of a large volume of water (2200-2600 m3 ha-1) is being developed in the Hetao Irrigation District of Ch...

Chimedza, R., 1990: The impact of irrigation development on women farmers in Zimbabwe: the case of Mushandike and Tagarika irrigation schemes. This study of the impact of irrigation development on women in Zimbabwe is focused on the Tagarika and Mushandike schemes. Tagarika commenced operation in 1988 and was based on a 1982 resettlement scheme. The 1983 Mushandike irrigation scheme, on...

Ahmed Skhiri; Farida Dechmi, 2012: Impact of sprinkler irrigation management on the Del Reguero river Spain I Water balance and irrigation performance. Irrigated agriculture notably increases crop productivity, but the generated irrigation return flows may induce surface water pollution by nutrients if irrigation water and fertilization management are inadequate. In this study, the Del Reguero wa...

Meinzen-Dick, Ruth, 1995: Timeliness of irrigation: Performance indicators and impact on agricultural production in the Sone Irrigation System, Bihar. Despite considerable discussion of the importance of timeliness as a key dimension of irrigation performance, few studies have assessed how well irrigation systems deliver timely water supplies, nor the magnitude of the effect on agricultural prod...

Lozovitskii, P.S., 2005: Changes in the properties of dark chestnut soils under the impact of long-term irrigation (the Kakhovka Irrigation system). Changes in some physical and chemical properties of dark chestnut soils irrigated for 27 years with fresh water from the Kakhovka irrigation canal. are discussed. Statistical characteristics of the chemical composition of the irrigation water in t...

Anonymous, 1979: Impact of irrigation - studies of canal, well and tank irrigation in Karnataka. The book is based on case studies of irrigation by different sources in Karnataka by members of the staff of the Institute for Social and Economic Change in Bangalore, preceded by two essays: Irrigation development in Karnataka by M. V. Nadkarni a...