Train services in Punjab were affected as farmers squatted on rail tracks on Wednesday as part of their three-hour `rail roko` protest to press the Centre into accepting their various demands, including a legally binding minimum support price for crops.

The call for the `rail roko` was given by the Samyukta Kisan Morcha (Non-Political) and Kisan Mazdoor Morcha. Kisan Mazdoor Morcha leader Sarwan Singh Pandher said farmers have been squatting on rail tracks at many places from 12 noon to 3 pm.