"We had detained 20 farmers when they tried to take out a rally here without permission. Afterwards, they were later let off," Bharuch control room police officials said.
Those detained included president of Gujarat Khedut Samaj Jayesh Patel.
"The Gujarat government is not allowing farmers of express their feelings against injustice to them. They deny permission to us to take out rallies or organise dharnas," Gujarat Khedut Samaj secretary Sagar Rabari was quoted as saying in a statement.
"However, permission was denied to us, farmers coming to the rally venue were not allowed to reach the spot and leaders were detained before the rally," he added.
According to Rabari, "it shows that this government is against the farmers of the state".