Source: Purdue University

Those hired to apply, handle or transport fertilizer for agricultural purposes within Indiana must become certified through the Office of the Indiana State Chemist and Seed Commissioner by Jan. 1, 2012.

The new rule also requires certification for anyone applying manure from confined feeding operations. Certification exams are conducted at the Purdue University-based OISC, with exams available at remote testing sites starting in January.

A state law passed by the Indiana General Assembly in 2009 created the rule that mandated the certification, known as Category 14, said Leo Reed, the OISC's manager of certification and licensing. 

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