The farmers, the bulk of them impoverished, plan to surround the state legislature of the western state of Maharashtra in Mumbai.
The Congress, he added, stands with the farmers and tribals marching to protest against the apathy of the central and state governments.
As the farmers braved the sultry weather, the city's famed "dabbawalas" known for delivering tiffins to lakhs of Mumbaikars with clockwork precision, offered them food and water.
Indigenous women and others who rely on the forests for a living face additional challenges in claiming rights to forest land and produce, despite the 2006 Forest Rights Act (FRA) that was meant to benefit a fifth of India's population.
Under pressure from the opposition and ally Shiv Sena, the BJP-led Maharashtra government Monday accepted the demands of agitating farmers, including their right to till forest land, as thousands of agriculturists converged here in a sea of red.
While the agrarian crisis of Maharashtra has been a much discussed issue, this is the first time that the All India Kisan Sabha (AIKS), the agriculture wing of the CPM, has taken the protest to the heart of the capital.
Even though the farmers planned to begin their march towards the Vidhan Sabha after 11 am, they chose to walk at night so that the students appearing for their Board exams weren't affected and the traffic ran smoothly.
Farmer leaders called the statement "a lie" and accused the government of trying to discredit the protest. Apart from this they also wanted the state govt to provide a compensation of Rs 40,000 per acre for crops hit by hailstorm and pink bollworm.
All India President of the AIKS, Ashok Dhawale, in an earlier interaction with BusinessLine, had said that the march of the downtrodden was for getting a complete waiver of their farms loans and tribal lands rights. Girish Mahajan was in touch with them from day one.
Many NGOs and social workers from across religions have come forward to provide water and food to these farmers.
All major political parties supported the agitation, with Congress president Rahul Gandhi terming it "an unprecedented show of strength", and urged Prime Minister Narendra Modi and Fadnavis to shed their ego and concede the farmers' legitimate demands.