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الرئيسية > Rainfall Variability and Crop...>الوصف

Rainfall Variability and Crop Production in Western Sudan: The Case of North Darfour State

المصدر: مجلة جامعة مروي التكنولوجية - عبد اللطيف الحمد
الناشر: جامعة عبد اللطيف الحمد التكنولوجية
المؤلف الرئيسي: Rahma, Abbas E. (Author)
مؤلفين آخرين: Kheiry, Abdalla N. (Co-Author) , Mohamed, Eltigani Abd Elrahman (Co-Author) , Mohamed, Mysara Ahmed (Co-Author)
المجلد/العدد: ع1
محكمة: نعم
الدولة: السودان
التاريخ الميلادي: 2018
الشهر: يناير
الصفحات: 57 - 70
ISSN: 1858-8522
رقم MD: 1260655
نوع المحتوى: بحوث ومقالات
اللغة: الإنجليزية
قواعد المعلومات: EduSearch, EcoLink, HumanIndex
مواضيع:
إنتاج المحاصيل | الظروف المناخية | الهندسة الزراعية
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المستخلص: Though agriculture is the predominant occupation in western Sudan, the relationship between rainfall variability and crop production appears not to have been adequately investigated in the area. Crop production is largely characterized by smallholder subsistence farmers who depend solely on highly unpredictable and irregular seasonal rainfall. In recent times, rainfall variability has led to numerous incidences of drought and floods. This phenomenon has the potential to adversely affect crop production and food security in the area. This study analyses inter- and intra-annual variability of rainfall so as to identify the relationship between rainfall variability and crop production in a representative district of western Sudan. Available monthly rainfall data for 44 years (1970 - 2014) recorded at Sudan Meteorological Agency was analyzed for seasonal and annual variability using the coefficient of variation (CV) and the precipitation concentration index (PCI). Total annual quantity of crop production data on main crops (i.e. millet, sorghum) was used. The available data covered a period of 44 years (1979 - 2014). To verify the influence of rainfall variability on crop production, correlation analysis was conducted. Although the results showed moderate seasonal rainfall distribution, (i.e. PCI > 11), the inter-seasonal and inter-annual rainfall variability (CV=0.19 and C=0.18 respectively) were moderate/less erratic. The results point to a negative correlation between annual rainfall and crop production for millet and sorghum. At seasonal level sorghum and millet showed negative correlation These results also point to a need for further studies to determine the influence of rainfall on arable land use and the periods of occurrence of drought in the study area. The results of this study would enable farmers to improve their crop production strategies.
ISSN: 1858-8522

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