Field Eligibility Application. To establish the eligibility of a field to be used for the initial production of certified turf grass, a participant shall submit a preplow inspection application to the Department at least 15 days in advance of preparation or tilling of the proposed field. The Department may not approve the eligibility of a field unless all noxious weeds or persistent objectionable grasses are controlled. For warm season turf grass, a field shall be free of another warm season variety or kind for a period of 3 years. Program Participation. After the Department has approved a field’s eligibility to participate in the certification program, a participant shall submit to the Department: An application, available from the Department, that has been completed; and A map clearly establishing the location and identification of each field. The application and map shall be submitted to the Department by: August 1 for seeded turf grass planted from January 1 to June 30 of the current year; February 1 for seeded turf grass planted from July 1 to December 31 of the previous year; August 1 of each year for vegetative turf grass planted from January 1 to June 30 of the current year; and February 1 for established fields of vegetative turf grass. Late applications: May be accepted by the Department; and May not be accepted later than November 1 if due August 1, or May 1 if due February 1. The Department shall consider the submission of an application as indicating the applicant’s intent to participate in the certification program.