The Chhattisgarh Forest Department plans to save over 500 recently girdled trees in Udanti Sitanadi Tiger Reserve using bridge grafting. A survey identified around 2,500 damaged trees, raising concerns about encroachment. Conservationist Vijay Nishanth, known as the. The Chhattisgarh Forest Department is seeking expert help to save more than 500 trees that were allegedly damaged by encroachers in Karka village, located deep inside the Udanti Sitanadi Tiger Reserve (USTR).