The Punjabi farmers protesting at the Shambhu and Khanauri borders to demand a legal guarantee for Minimum Support Price have scheduled their next course of action after their 'Delhi Chalo' march attempts were foiled by the police several times. Farmer leader Sarwan Singh Pandher said a tractor march will be taken out in states except Punjab on December 16. A 'rail roko' protest will be held on December 18 from 12 noon to 3 pm in Punjab, he added.