One of the solutions that ...
Published by Suhasini Bhatnagar, Employee at swaroop enterprises and biotech private limited.
One of the solutions that turn out cheap as well as long lasting is apply bricks to just the walls.dig mud and embed them there with cement.Next put in some nitrogen fixing bacteria and some plants that can fix nitrogen.This will be a gradual step by step protocol and also time taking but will involve local resources mostly.