Restricted-use commercial fertilizers or agricultural minerals: Classification.

The following commercial fertilizers or agricultural minerals, if sold, offered for sale or distributed as single nutrients, not in combination with any other commercial fertilizer or agricultural mineral, are classified, pursuant to NRS 588.164 , as restricted-use commercial fertilizers or agricultural minerals: 1. Ammonium nitrate if the nitrogen content is 23 percent or greater. 2. Anhydrous ammonia.