See since there is no agriculture land in your name or father's name now you will not be treated as agriculturist as under Karnataka law only a person involved in agriculture activity by himself or family is agriculturist. So you will need the DC permission under section 79 to purchase land.

Further if you can get certificates of an agriculturist you can buy without permission but in my view there are bleak chances of same.

you can  purchase agricultural land if you obtain agricultural family certifcate from tehsildar and family tree from village accountant 

obtain it from tehsildar 

Tehsildar gives an agriculturist certificate.

1. As per the information mentioned in the present query, make it clear that you had the family background of farming, but now not been practising the same since long.
2. As per the settled law, a person from a farmer family may buy agricultural land for the same purpose only.
3. But, here you have not been doing it since long, so I advice you to please make an application to the DM for considering your case, see his response and then go accordingly.
4. Though there are rulings by the apex court to not to see the time gap for a person from a family of farmer.

Dear Sir

Please see sections 79 to 82 of Karnataka Land Reforms Act wherein Asst. Commissioner is authorised to issue

such permission on the reports of the Tahasildar etc.

This rule is only in karnataka and maharastra as per my knowledge, each every state having different rule and regulations

For buying agricultural land inn karnatka agriculturist certificate is compulsory non agriculturist can't buy agri land in karnatka

it's obtain from collector office by showing your agri land owning  record

Collect record from land  revenue department and you can discuss with them about all these required certificates and from where you get,they can help you better

Also discuss with them about your eligibility as a agriculturist please consult local lawyer before moving forwrd

DC

Since you belong to the family of agriculturist, you are eligible for buying agricultural land.

In fact it is not essential to belong to an agricultural family in Karnataka for income up to Rs. 25 Lakhs to purchase agriculutral land.

From whom should I get Agriculturist certificate from


Tahsildar Or DC?

You may obtain the certificate from the Revenue department/Tehsildar's office