Union Minister of Road Transport and Highways Nitin Gadkari exclusive at Agenda Aaj Tak. The minister said that even human hair can aid growth in the Agri sector. He cites his own example saying, ‘I buy truckloads of hair from Tirupati. This is to shift to a greener source of fertilizer for my own farms’. The minister also said that the institutes have researched turning waste hair into Amino acid, which is a base for fertilizers.