Determination of Crop Water Consumption and Irrigation Schedules of Important Crops in Chad

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Selcuk Journal of Agriculture and Food Sciences
Cilt: 39 Sayı: 3
Determination of Crop Water Consumption and Irrigation Schedules of Important Crops in Chad

Determination of Crop Water Consumption and Irrigation Schedules of Important Crops in Chad

Authors : Mahamat Djibrine Kamaladine, Mehmet Akif Kalender

Pages : 512-525

Doi:10.15316/selcukjafsci.1736838

View : 152 | Download : 300

Publication Date : 2025-12-27

Article Type : Research Paper

Abstract :This study aims to determine the crop water consumption (ETC) and irrigation schedules of some crops grown intensively in these regions, considering the Am-Timan and Bol meteorological stations located in the Sahel and Sudan climatic zones of Chad and the Faya station in the Sahara region. In the study, calculations were made using CropWat 8.0 software developed by the Land and Water Development Department of FAO. The crop coefficients (KC) of five different crops, namely sesame, maize, cotton, groundnut and tomato, which are the most grown in Chad, and the reference evapotranspiration (ETO) for the regions were calculated. According to the obtained results, the average reference evapotranspiration (ETO) values were calculated as 7.38 mm/day for Am-Timan, 10.45 mm/day for Bol and 11.11 mm/day for Faya. The calculated crop water consumption (ETC) values were 531.6 mm in Am-Timan, 863.7 mm in Bol, and 1080.5 mm in Faya for sesame; 685.1 mm in Am-Timan, 1024.0 mm in Bol, and 1518.2 mm in Faya for maize; 1103.5 mm in Am-Timan, 1877.7 mm in Bol, and 2052.9 mm in Faya for cotton; 532.6 mm in Am-Timan, 742.4 mm in Bol, and 1083.1 mm in Faya for groundnut; and 800.6 mm in Am-Timan, 1211.7 mm in Bol, and 1037.1 mm in Faya for tomato. When irrigation schedules were examined, it was determined that rainfall was adequate for certain crops, including maize and groundnut, in Am-Timan and that there was no need for additional irrigation. However, in Bol and Faya regions, irrigation practices became necessary due to insufficient rainfall. These results emphasize the need to develop region-specific irrigation strategies for effective management of water resources and increased agricultural productivity.
Keywords : Bitki Katsayısı (Kc), Bitki su tüketimi (ETc), CropWat, Referans Evapotranspirasyon (ETo), Sulama programı

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