167
cultivation, we applied deficit irrigation to it and the losses in yield resulted from
raised beds cultivation was calculated. The saved irrigation water will be used to
irrigate new areas with wheat and this area will be added to wheat total cultivated
area to increase its total production and compensate the loss in the productivity
per hectare. Wheat production-consumption gap was calculated under this production alternative.
4. Implementing intercropping systems for wheat: the effect of five wheat intercropping systems was assessed on wheat total production, where wheat was the
secondary crop in the intercropping system. These intercropping systems are:
wheat intercropping with tomato, cotton relay intercropped with wheat, wheat
intercropping with sugar beet, wheat intercropped under fruit trees, and wheat
intercropped with sugarcane. Reduction in the cultivated area of the main crops
in these intercropping systems was calculated using similar approach to the one
done for wheat. Wheat production resulted from intercropping systems was
added to wheat production resulted from applying deficit irrigation on raised
beds and its total production was calculated. Wheat production-consumption gap
was calculated under this production alternative.
5. Investment of the saved irrigation water: in Chap. 6, the saved irrigation water
resulted from cultivation on raised beds and application of deficit irrigation to
Egyptian clover and sugar beet in Chap. 4 and resulted from onion and winter
tomato in Chap. 5 was assumed to be used in cultivating new area of wheat.
Under climate change we assessed the possibility of saving an amount of water
to be use in adding new areas to wheat. Wheat production resulted from intercropping systems was added to the production resulted from applying deficit
irrigation and the production resulted from the saved water from these four
crops. The total wheat production was calculated, as well as wheat productionconsumption gap under this production alternative.
Water productivity was calculated under these five production alternatives. Water
productivity is a quantitative term used to define the relationship between crop produced and the amount of water involved in crop production (Igbadun et al. 2006). It
is a good indicator to compare between the five productions alternatives, because it
involves both crop production amount, and its applied irrigation water to produce
this amount.
8.4.3 Production Alternatives for Wheat Under Climate
Change
8.4.3.1 Traditional Cultivation of Wheat
The values of projected wheat water consumptive use and consequently its water
requirement on governorate levels was used to calculated the wheat cultivated area
using the amount assigned irrigation water to irrigate wheat in 2017 presented in
8 Climate Change and Wheat Self-Sufficiency
cultivation, we applied deficit irrigation to it and the losses in yield resulted from
raised beds cultivation was calculated. The saved irrigation water will be used to
irrigate new areas with wheat and this area will be added to wheat total cultivated
area to increase its total production and compensate the loss in the productivity
per hectare. Wheat production-consumption gap was calculated under this production alternative.
4. Implementing intercropping systems for wheat: the effect of five wheat intercropping systems was assessed on wheat total production, where wheat was the
secondary crop in the intercropping system. These intercropping systems are:
wheat intercropping with tomato, cotton relay intercropped with wheat, wheat
intercropping with sugar beet, wheat intercropped under fruit trees, and wheat
intercropped with sugarcane. Reduction in the cultivated area of the main crops
in these intercropping systems was calculated using similar approach to the one
done for wheat. Wheat production resulted from intercropping systems was
added to wheat production resulted from applying deficit irrigation on raised
beds and its total production was calculated. Wheat production-consumption gap
was calculated under this production alternative.
5. Investment of the saved irrigation water: in Chap. 6, the saved irrigation water
resulted from cultivation on raised beds and application of deficit irrigation to
Egyptian clover and sugar beet in Chap. 4 and resulted from onion and winter
tomato in Chap. 5 was assumed to be used in cultivating new area of wheat.
Under climate change we assessed the possibility of saving an amount of water
to be use in adding new areas to wheat. Wheat production resulted from intercropping systems was added to the production resulted from applying deficit
irrigation and the production resulted from the saved water from these four
crops. The total wheat production was calculated, as well as wheat productionconsumption gap under this production alternative.
Water productivity was calculated under these five production alternatives. Water
productivity is a quantitative term used to define the relationship between crop produced and the amount of water involved in crop production (Igbadun et al. 2006). It
is a good indicator to compare between the five productions alternatives, because it
involves both crop production amount, and its applied irrigation water to produce
this amount.
8.4.3 Production Alternatives for Wheat Under Climate
Change
8.4.3.1 Traditional Cultivation of Wheat
The values of projected wheat water consumptive use and consequently its water
requirement on governorate levels was used to calculated the wheat cultivated area
using the amount assigned irrigation water to irrigate wheat in 2017 presented in
8 Climate Change and Wheat Self-Sufficiency