First it depends on your qualification. Some of the state government jobs in the field of agriculture are:

• Agriculture Development Officer (ADO)
• Class-I (Gazetted)
• Agriculture Extension Officer
• Range Forest Officer
• District Horticulture Officer (D.H.O. Grade-I)
• Superintendent-Govt
• Garden District Cane Officer
• Assistant Conservator

The above post may vary in the educational qualification requirement. 

There are private jobs as well. There are campus placements too and central government jobs too.

Good Luck.