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Author(s): I. Seceleanu | A. Vranceanu | P. Ignat | Sorina Dumitru | S. Ispas

Journal: Soil Forming Factors and Processes from the Temperate Zone
ISSN 1582-4616

Volume: 7;
Issue: 1;
Start page: 85;
Date: 2008;
Original page

Keywords: agricultural land | Harsova | classes of irrigation

Due to the visible increase in productivity in the irrigated perimeters, especially during drought seasons, a series of large irrigation systems have been developed in Romania, using the Danube river as a water source, especially in Harsova Tableland Dobrogea area, where the average temperature is 110, annual average rainfall 350 mm, with reference evapotranspiration Thornthwaite (ETo-TH) of 700 mm. Taking this into consideration, I.C.P.A. Bucharest issued a methodology with a number of 6 classes of irrigation feasibility soils, in order to eliminate the risks associated with irrigation implementation. Class I with– very good lands for irrigation implementation till class VI with non – feasible irrigation lands. It can be appreciated that from the total agricultural land of Harsova Tableland by 628,8 km2, 70% are occupied by areas from class II – good lands for irrigation implementation, with reduced degradation and agricultural use limitations, determined by salinisation, alcalisation, relief, erosion, drainage, flooding. These are lands that can be irrigated, but are in need of implementation of prevention measures. These lands do not raise difficult implementation problems. These lands can be found in the Eastern part of Hirsova Tableland,being occupied by Calcic Kastanozems loam-sandy type, Eutric Fluvisols and class III – moderate irrigation feasibility lands, with moderate degradation and agricultural use limitations, determined by one or more of the factors mentioned above. These terrains can be irrigated, although they present moderate restrictions and they are in need of prevention and improvement works. These lands are located in Northern part of Hirsova tableland, in Ciobanu village and area with Eutric Arenosols, Gley-eutric Cambisols and Salic Fluvisols. Areas wits class I and IV-VI occupied 30% on Danubian river bad and hils region. It can be appreciated that the Harsova tableland are in urgent need of being prepared for irrigation, because are very arid and agricultural production is very powerfully affected by long periods of drought.
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