Which of the following is a major irrigation scheme on the Nile Valley?

The major irrigation scheme on the Nile Valley is the Managil extension. This scheme is located in Sudan and is one of the largest irrigation systems in the country. It is designed to irrigate the Managil and Rahad plains in eastern Sudan, covering an area of about 8,700 square kilometers. The scheme has several canals, pumping stations, and reservoirs, which are used to distribute water to the farms in the area. The water for the scheme is drawn from the Blue Nile River and is used to grow a variety of crops, including cotton, sorghum, and vegetables.