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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.

Contributors in Pesticides

Pesticides

monomictic

Agricultural chemicals; Pesticides

Lakes and reservoirs which are relatively deep, do not freeze over during winter, and undergo a single stratification and mixing cycle during the year (usually in the fall).

montreal protocol

Agricultural chemicals; Pesticides

Treaty, signed in 1987, governs stratospheric ozone protection and research, and the production and use of ozone-depleting substances. It provides for the end of production of ozone-depleting ...

moratorium

Agricultural chemicals; Pesticides

During the negotiation process, a period of 60 to 90 days during which EPA and potentially responsible parties may reach settlement but no site response activities can be conducted.

most probable number

Agricultural chemicals; Pesticides

An estimate of microbial density per unit volume of water sample, based on probability theory.

muck soils

Agricultural chemicals; Pesticides

Earth made from decaying plant materials.

mudballs

Agricultural chemicals; Pesticides

Round material that forms in filters and gradually increases in size when not removed by backwashing.

mulch

Agricultural chemicals; Pesticides

A layer of material (wood chips, straw, leaves, etc.) placed around plants to hold moisture, prevent weed growth, and enrich or sterilize the soil.

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