Agricultural land can only be used for farming. Agricultural lands cannot be used for developmental purposes such as residential, commercial, industrial, or medical facilities besides on conversion of the land into non-agricultural lands.
Thus, you will have to convert the agricultural land into a non agricultural land if you want to use it for commercial puposes.
The land conversion laws differ from state to state in India.
In Maharashtra, Karnataka, Rajasthan and Uttar Pradesh states, land owners have to approach the revenue departments of their cities for the conversion.
In districts of Rajasthan, the tehsildar could grant permission for conversion of agriculture land for residential use for parcels measuring up to 2,500 square metre.
The documents required along with the application for conversion are:
RTC (record of rights, tenancy and crops)
Partition deed (in case the land has been inherited)
Receipt of payment of land revenue, etc.
The procedure is to approach the concerned authority with an application and documents. After the verification and clearances by the authorities they will issue a conversion order. The changes would sbsequently be made and entered in the records. Thus, you may convert your land.
Some states allow online procedure for conversion too.
Reference: Maharashtra Land Revenue (Conversion of Use of Land and Non-Agriculture Assessment) Rules, 1969
UP Zamindari Abolition and Land Reforms Act