Get some experience first.  That means agronomy, knowing chemical applications, rules, regulations
and spend some time in the business.  A 2 yr. ag degree is a good start, and working summers for
a retailer, custom applicator is important.  
Yes, you are too green to trust, spraying any crop is difficult. You would not have a chance
at getting insurance, etc.  That is down the road.
Good luck.