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

zone of saturation

Agricultural chemicals; Pesticides

The layer beneath the surface of the land containing openings that may fill with water.

Ultra Clean Coal (UCC)

Agricultural chemicals; Pesticides

Coal that is washed, ground into fine particles, then chemically treated to remove sulfur, ash, silicone, and other substances; usually briquetted and coated with a sealant made from coal.

ultraviolet rays

Agricultural chemicals; Pesticides

Radiation from the sun that can be useful or potentially harmful. UV rays from one part of the spectrum (UV-A) enhance plant life. UV rays from other parts of the spectrum (UV-B) can cause skin ...

uncertainty factor

Agricultural chemicals; Pesticides

One of several factors used in calculating the reference dose from experimental data. UFs are intended to account for (1) the variation in sensitivity among humans; (2) the uncertainty in ...