He listed eighteen crops that were widely diffused during the Islamic period, including durum wheat, Asiatic rice, sorghum, and cotton, and argued that techniques such as irrigation were also spread across the region at that time.
He listed eighteen crops that were widely diffused during the Islamic period, including four staple crops, namely durum wheat, Asiatic rice, sorghum, and cotton. He also argued that techniques such as irrigation were spread across the region at that time.