Sorghum (Sorghum bicolor [L.] Moench) is the 5th most important world cereal crop after sorghum, wheat, rice, and barley (FAO 2019). It is a staple food crop in the drier parts of Africa, China, and India (Ajeigbe et al., 2018; Mrema et al., 2017). The largest world sorghum producers are the USA with a total annual grain production of 8.7 million tons from 2.0 million hectares, Nigeria (6.9 million tons and 5.4 million hectares), Ethiopia (5.3 million tons and 1.9 million hectares), and Sudan (3.7 million tons in 6.8 million hectares) (FAO 2019). The crop is environmentally friendly, requires little or no fertilizers or pesticides, and is biodegradable (FAO, 1995).