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Chad faces critical issues of food security related to the impacts of population, precipitation and cropland on the production of staple crops. This article analyses the factors of food production in the perspective of an integrated, forward-looking food system. Regression polynomials, Gaussian models, and sum-of-sine model methods applied to the period 1980–2015 show that population explained 79%, 79%, and 67% of the variability in sorghum, maize, and rice production, respectively; precipitation accounted for 69%, 65%, and 54%; and cropland explained 77%, 84%, and 78% of the variability.

Population dynamics and precipitation effects on food security in the grain-producing region of the Republic of Chad