Scarification and presence of soil in pods with holes in groundnut under field conditions is a symptom of damage due to

Scarification and the presence of soil in pods with holes in groundnut under field conditions is a symptoms of damage due to Termites.
Termites penetrate and hollow out the tap root and stem thus killing the plant. Bore holes into pods and damage the seed.
It removes the soft corky tissue from between the veins of pods causing scarification, weakening the shells, and making them liable to entry and growth of Aspergillus flavus that produces aflotoxins.