BJP President Amit Shah today said, cooperative movement is the key of development of farmers of Uttar Pradesh. Addressing a cooperative sammelan of the party in Lucknow, Mr Shah took on SP and BSP and said that both parties ruined the cooperative sector in the state. <br />''<br />''He said, the aim of Cooperative sector was to shield farmers from exploitation of the private sector but in Uttar Pradesh, due to SP and BSP, the basic structure of the sector collapsed. <br />''<br />''The BJP President said, UP can learn from Maharashtra and Gujarat where the cooperative sector has a key role in development.<br />''<br />