On or before January 15, and April 15, and August 15 of each crop year, each handler shall file with the Board a written report, certified to the Board and to the Secretary by such handler as to its completeness and correctness, showing as of the close of business on December 31, March 31, and July 31, respectively, such information as may be prescribed by the Board for use in redetermination of kernel weight and marketing policy considerations.