IV International Palynological Congress was hosted by the Institute from 29th December 1976 to 5th January 1977.
It was attended by 340 delegates including 137 overseas participants. In all 292 research papers were presented during the 29 symposia and non symposia session. Besides, 5 plenary and 5 special lectures were delivered by distinguished scientists of India and abroad. This gathering established better understanding amongst the participants and increased the possibilities of scientific collaboration between BSIP and other centers of the world engaged in palynological research.