The average per capita share of major cereal crops was about 254.18 kg, 902.33 thousand calories, 26.01 thousand grams of protein, and 3.89 thousand grams of fat as an average for the period (2017-2019). The research problem was represented in the exacerbation of food gap in grain crops in light of population increase, against limited agricultural resources of land and water. The aim of research is to study the future feddan productivity of the most important grain crops in the relatively long term, using a number of different indicative charts. The research relied on both descriptive and quantitative statistical analysis methods, with an estimate of regressive relationships between feddan physical productivity and time of crops under study during the period (1920-2019). It became clear that the productivity of wheat per feddan in the period (1920-2019) took a general linear upward trend, with an annual average of 0.059 ardab/ feddan. As for the expected values ​​for it from the year 2030 to 2100, it is expected to increase from 35.54 ardab/ feddan in 2030, to 39.30 ardab/ feddan in 2100. As for feddan productivity of rice during the period (1920-2019), it clearly took a general linear upward trend, with an annual average of 0.024 ton/ feddan. As for the expected values ​​for it from the year 2030 to 2100, it is expected to increase from 6.11 tons / feddan in 2030, to 6.67 tons / feddan in 2100. As for feddan productivity of maize during the period (1920-2019), it took a general upward trend in all functions, with an annual average of 0.16 ardab/ feddan. As for the expected values ​​from the year 2030 - 2100, it is expected to increase from 26.95 ardab/ feddan in 2030, to 43.99 ardab/ feddan in 2100.