It also improves the texture of clay soils.
Meal derived from leguminous seeds makes the flesh firm and improves the quality.
Southwards the quality of the soil rapidly improves, and becomes the most fertile part of Egypt.
In the same way champagne rarely, if ever, improves after twelve to fourteen years.
The most important crop, as a result of irrigation, is alfalfa, which is grown for forage, requires little attention, and improves the soil.