Gangtok: The National Doordarshan Channel in co-ordination with the Government of Sikkim will be telecasting a programme on off- season vegetable cultivation on 19th April i.e Thursday from 8a.m to 8.30 am in a special programme “Subha Sabhera”. The DD Channel has already aired three programmes based on Sikkim Flower Festival, Samdruptse and a success story on Mainam Garden.