University of Khartoum

Performance of Center Pivot Irrigation Systems on the High Terrace Soil of the Northern State, Sudan

Performance of Center Pivot Irrigation Systems on the High Terrace Soil of the Northern State, Sudan

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Title: Performance of Center Pivot Irrigation Systems on the High Terrace Soil of the Northern State, Sudan
Author: Hamid, Muzamil Gafer Mahmoud
Abstract: This experimental work was carried out at New Amri Agricultural Scheme, of the Authority of Merowi Dam Area Agricultural Development. The project is located in the Northern State (Longitude 31°06´08´´ and 31°13´31´´ E and latitudes 17°55´11´´ and 17°58´11´´N). The experimental work was conducted for two consecutive seasons (2011/012 and 2012/013) with the objectives of evaluating the hydraulic performance of four center pivot irrigation systems and computing the water productivity of wheat under Northern State conditions. The treatments comprised four center pivot irrigation systems and three rotation speeds (100%, 70% and 30%) arranged in a split/plot design with three replications. A computer program (SAS statistical package) was used to analyze the data, while the differences between means were determined by the least significant difference (LSD). Crop water requirement of wheat was obtained from Cropwat 4 windows computer model. Data were collected on the hydraulic characteristics of center pivot irrigation system viz: application efficiency (Ea%), Christiansen coefficient of uniformity (Cu%) and distribution uniformity (Du %) as well as irrigation efficiency (IE%) and scheduling coefficient(Su) and water use efficiency (water productivity-WUE, kg/m3). The results showed that the highest mean values of Cu% (96.6%), Du% (94.8%) and Ea% (90.1%) were recorded in pivot (A) with rotation speed of 30%. Pivots (B) and (C) with rotation speed of 30% gave highest mean values (82.8%) for irrigation efficiency (IE %). On the other hand pivot (D) gave the highest value (1.14) of scheduling coefficient (Su) as compared to the other pivots. Wheat water productivity was significantly (P ≤ 0.05) increased under the four pivot systems, whereas pivot (B) gave the highest mean value of water productivity (0.25 kg/m3) while the value for pivot (D) was ranked the least (0.21kg/m3). Hence, it becomes evident from this study; that improving hydraulic performance of center pivot system will lead to an increase in crop (wheat) water productivity (kg/m3).under the environmental conditions at which the study was conducted.
Description: 94page
URI: http://khartoumspace.uofk.edu/123456789/16813
Date: 2015-10-29


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