M.S. Shanmugasundaram grows curry leaves, vegetables, jasmine and, if there is water, bananas on his eight-acre farm near Coimbatore.Normally, there is rainfall for three months a year in his area making him dependent on open wells, borewells and the rainfall for water. However, Mr. Shanmugasundaram has also faced days when all the water sources on his land had gone almost dry when the northeast monsoon failed. Hope came for Mr. Shanmugasundaram in the form of Firmenich, a Geneva-based perfumery, along with its joint venture partner Jasmine Concrete. They provided funds for setting up Bhungroo, a water-harvesting system, on his land in August last year.Firmenich sources flowers, gum and essential oils from a number of farmers in the country through