[01] Yassir Mohamed Ibrahim, Department of Agricultural Engineering, Faculty of Agriculture, University of Nile Valley, Atbara, Sudan. [02] Hajer Mahjoub Abd Alla Mohammed, Department of Agricultural Engineering, Ministry of Agriculture, Atbara, Sudan. [03] Osama Osman Ali, Department of Agricultural Engineering, Faculty of Agricultural technology and Fish sciences, Al-Neelain University, Khartoum, Sudan. [04] Mohmed Abdallah Mohmed Abdalhi, Department of Agricultural Engineering, Faculty of Agricultural technology and Fish sciences, Al-Neelain University, Khartoum, Sudan.

The experimental work was carried out during two growing seasons 2017-2018 and 2018-2019. It consisted evaluating the performance of different towers of center pivot irrigation system and their effect on crop growth and yield. The treatments used were distance of tower from the pivot. The experiment was arranged in complete randomized block design with three replications. Wheat crop was used as indicator, the crop parameters measured were number of leaves/plant, plant height, plant density, stem diameter, Spike length and yield. For testing the performance of center pivot system, a 280 catch cans with same specifications were used to collect water applied by the nozzles, where the system allowed completely pass over them. The results revealed that the general uniformity coefficient and uniformity of distribution of the center pivot irrigation system were found to be 75% and 64% respectively. Also the results indicated that the maximum plant height was found under towers number 1 and 2 as the same value of 74.3 cm. While the towers number 4, 2 and 3 gave the highest number of leaves/ plant. Tower number 3 and 4 gave the highest stem diameter as 0.2 cm. The tallest spike and number of plants per plot were 10.33 cm and 529.33 plant/m2 found under tower number 4. The results of this study can help users to improve the performance of center pivot irrigation system.

Center Pivot, Conventional System, Irrigation System, Tower, Wheat, Yield

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