No, you're barking up the wrong tree here. Tigray normally grows diverse crops of sorghum, maize, teff, barley etc, fruits such as oranges.

The famine in Tigray is entirely man-made. It's caused by widespread crop destruction, blockades of farming necessities, deliberate destruction of water infrastructure, farm implements etc.

If you want to know more about agriculture in Tigray and the effects the war had on it, here's a really in-depth article.