Dear Mr Siddharth,
The income from a farm house is exempted for tax purpose. This provision is given in Income Tax Act in Section 2(1A)(c) and Section 10(1).
This was done to protect the farmers from taxing who are already Burdened for many issues like drought, malpractices of grain buyer.
If you are having a farm house and earning income from it alongwith other income then you should show it on your return but it will not be added on taxable income.