Pesticides

Pesticides

Any chemical or substance used to kill or inhibit the growth of pests that damage or interfere with the growth of crops, shrubs, tress, timber and other vegetation useful to humans.

Industry: Agricultural chemicals

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Pesticides

Working Level (WL)

Agricultural chemicals; Pesticides

A unit of measure for documenting exposure to radon decay products, the so-called "daughters." One working level is equal to approximately 200 picocuries per liter.

Working Level Month (WLM)

Agricultural chemicals; Pesticides

A unit of measure used to determine cumulative exposure to radon.

xenobiota

Agricultural chemicals; Pesticides

Any biotum displaced from its normal habitat; a chemical foreign to a biological system.

yard waste

Agricultural chemicals; Pesticides

The part of solid waste composed of grass clippings, leaves, twigs, branches, and other garden refuse.

yellow-boy

Agricultural chemicals; Pesticides

Iron oxide flocculant (clumps of solids in waste or water); usually observed as orange-yellow deposits in surface streams with excess iron content. (See: floc, flocculation.)