The man credited with revolutionising milk production in India has resigned as chairman of the Gujarat Cooperative Milk Marketing Federation (GCMMF).
Verghese Kurien told the BBC he was resigning after losing the confidence of the federation's members.
The GCMMF, which Mr Kurien headed for 34 years, benefited thousands of dairy farmers, especially rural women.
Mr Kurien's critics say the GCMMF's productivity has been hit by disputes with former colleagues.
The GCMM owns Amul, the biggest milk product brand in India.
Mr Kurien's resignation comes ahead of a proposed no-confidence motion that was going to be tabled by a sizeable section of the members of the cooperative.
Mr Kurien recently suffered a setback when his nomination papers for election to the National Dairy Development Board (NDDB) were rejected by the returning officer.