ASRB  Eligibility : 

Age Limit: A candidate seeking admission to the  Examination must have attained the age of 21 years but not have attained the age of 32 years

The upper age limit prescribed above will also be relaxable:-

(i) Upto a maximum of five years if a candidate belongs to SC or ST.

(ii) Upto a maximum of 3 years in the case of candidates belonging to Other Backward Classes, who are eligible to avail of reservation applicable to such candidates, i.e. Non-creamy layer.

(iii) For Divyang candidates, the upper age limit will be relaxable upto a maximum of 10 years. Candidates belonging to SC, ST and OBC who are also covered under the Divyang category will be eligible for grant of cumulative age relaxation under both the categories. 

Educational qualification:-

A candidate must hold a Master’s Degree or equivalent in the concerned discipline with specialization .

yes you must complete you msc ag as well.

Feel free to ask me in the comment box if you are having any further doubts

hope you find it helpful 

Good Luck!