Administrative officer of Hindu High School Educational Institutions G. Ramasubba Reddy on Wednesday called upon students to plant as many saplings as possible to reduce environmental pollution and stop ecological imbalance. Mr. Reddy was the chief guest at a sapling distribution programme conducted jointly by the NSS wing of the KBN College and Lions Club of Vijayawada Vision. College principal a.V.S. Prasada Rao and others were present.