Hi,
There is a good scope in b.sc (agriculture) you can go for research work after going for m.sc or can work as a professor in any good university.
There are many government jobs also like IIFCO, agriculture extension officer, district horticulture officer, range forest officer and many other jobs are available.
There is also job in private sector there are some organisation that recruit agriculture graduates.
There are jobs in banks and insurance sector like field officers , rural development officer, junior associates etc.
You may also go for various competition such as IBPS, FCI, AIC, NSCI etc.
There many universities that have good placement in these sector.
You can also go for journalisn in this sector.