Property

You have to apply for such change to the RDO/SDO(Revenue officials) along with a copy of your sale deed and extract of 7/12.

Stop worrying about such entries if you have a valid registered sale deed in your favour.  You can seek a copy of such laid down process for correction of such entries under RTI from Revenue officers and follow the same.  There may be a lessee that is cultivating the land or friend or relative to guide you through his contacts with RO at the location of your farm.

Who is in possession/occupation of the land? When was the mutation as to 'kul' made? please verify the mutation and its factual context.

If you have purchased agriculture land, as stated by you, how mutation is shown in the name of "Kul" 

Consult and engage a local prudent lawyer for appreciation of facts/ documents involved in the post,  professional advise and necessary proceeding.