The numerous, tiny seeds of the crowfoot grass are collected wildly in times of food scarcity, slightly roasted and ground into a flour from which a thin gruel or porridge can be prepared. However, the seeds do not taste very good and can cause internal disorders. In addition to the low yield, this is probably a decisive reason why this cereal is only consumed in times of need.
I found these spikes in Oman by the roadside. It may even be indigenous Dactyloctenium robecchii. However, D. aegyptium is a common weed in hot regions of the world, including Oman.