The study compared sweet sorghum and grain sorghum to see how they differ. They looked at how the plants grow, their sugar and chlorophyll levels, and how fast they breathe. Sweet sorghum grew better and had more sugar than grain sorghum, but both had similar sugar trends. Sweet sorghum had higher biological yield, while grain sorghum had better ear characteristics. Grain sorghum had more chlorophyll, but sweet sorghum breathed faster. The two types of sorghum have different functions and uses.