Method of exposing agricultural substrates (plant matter 10, animal matter12) to agrochemicals (A) method of decreasing or preventing sub-surface geologicalmatter (20, 22) contamination resulting from exposing agricultural substratesto agrochemicals composition [(A)/(T)] 30 used therein article-of-manufactureincluding the composition. Includes exposing agricultural substrates to compositionincluding combination (mixture) of an agrochemical and at least one transformingagent capable of decreasing or eliminating concentration of the agrochemicalwhich contacts sub-surface geological matter (at temporally varying times,and at spatially varying depths). Before entering sub-surface geological matter,transforming agent exhibits inactivity for decreasing agrochemical concentration,and inactivity for affecting or/and interfering with agrochemical functionalitywith respect to agricultural substrates. Transforming agent co-migrates andis co-distributed with agrochemical within and throughout sub-surface geologicalmatter, and exhibits activity for decreasing or eliminating agrochemical concentrationtherein. Transforming agent activity is exhibited at spatially varying depths,at temporally varying times, within sub-surface geological matter.
