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

special review

Agricultural chemicals; Pesticides

Formerly known as Rebuttable Presumption Against Registration (RPAR), this is the regulatory process through which existing pesticides suspected of posing unreasonable risks to human health, ...

topography

Agricultural chemicals; Pesticides

The physical features of a surface area including relative elevations and the position of natural and man-made (anthropogenic) features.

total dissolved phosphorous

Agricultural chemicals; Pesticides

The total phosphorous content of all material that will pass through a filter, which is determined as orthophosphate without prior digestion or hydrolysis. Also called soluble P. or ortho P.

Total Dissolved Solids (TDS)

Agricultural chemicals; Pesticides

All material that passes the standard glass river filter; now called total filtrable residue. Term is used to reflect salinity.

Total Maximum Daily Load (TMDL)

Agricultural chemicals; Pesticides

A calculation of the highest amount of a pollutant that a water body can receive and safely meet water quality standards set by the state, territory, or authorized tribe.

Total Petroleum Hydrocarbons (TPH)

Agricultural chemicals; Pesticides

Measure of the concentration or mass of petroleum hydrocarbon constituents present in a given amount of soil or water. The word "total" is a misnomer--few, if any, of the procedures for quantifying ...