Method of tagging agricultural products

Compounds and methods for tagging bulk agricultural products for identity preservation are provided. The tagging agents are typically dissolved and/or dispersed in a carrier and applied to a bulk agricultural product in an amount sufficient to allow detection from a randomly drawn sample of the bulk agricultural product. The presence or absence of the tagging agent in a sample of a bulk agricultural product can be detected using a wide variety of analytical methods. The tagging agent may be detected directly while still on surfaces of bulk agricultural product or may be detected indirectly by analyzing a sample of vapor in contact with the bulk agricultural product or a solution generated by washing a sample of the bulk agricultural product with a solvent.