●  There was a significant increase in the Indigo production in the 18th and 19th century in Bengal and Bihar due to increasing demand and production.

●  Though the revolts of farmers and oppressive zamindari system had some negative impact on indigo farming.

●  In March 1859 thousands of ryots in Bengal refused to grow indigo. As the rebellion spread, ryots refused to pay rents to the planters, and attacked indigo factories. After the revolt, indigo production collapsed in Bengal.

●  Other major reason for its falling cultivation was the invention of Synthetic indigo.