What were the circumstances which led to the eventual collapse of indigo production in Bengal?

The collapse of indigo production in Bengal was caused by the following circumstances:

1. Ryots’ denied producing the indigo anymore.
2. Protests started taking place by the peasants/ryots supported by the zamindars.
3. Following the protests, the Indigo Commission was constituted by the government, which accepted the faults of the planters and asked the planters to stop the cultivation.
4. Planters eventually moved out of the city.