Their main approach to crop improvement is changing the seeds. Sometimes agronomists use genetic engineering to develop crops which are resistant to pests and drought. Thus they examine the genetics, cellular biology, breeding, and physiology of crops. They also many vary the way crops are grown and managed. Much of an agronomists time is spent planning and conducting studies of crop yields.
Agronomists work in varied settings.
Some work at colleges and universities where they teach students. Others work for the state government and work with farmers and others who need information. Other agronomists work in industry where they help corporations develop new strains of fruits and vegetables. Agronomists is a specialty of Agricultural Scientists. For more information, see the occupation of Agricultural Scientists.