As nouns the difference between agronomy and agribusiness

is that agronomy is the science of utilizing plants, animals and soils for food, fuel, feed, and fiber and more. To do this effectively and sustainably, agronomy encompasses work in the areas of plant genetics, plant physiology, meteorology, animal sciences and soil science while agribusiness is big business connected to agriculture, either owning or operating large scale farms, or catering to those who do.