Glossary P

The Environmental Glossary. Letter P +++ Popular Articles: 'Parallel connection', 'Peak power', 'Process'

A Permeability is the degree to which groundwater can move freely through an Aquifer measured by the interconnection of pores and fractures
Other /More definition:
A permeability is the ability of a material to allow the passage of a liquid, such as water through rocks.

Deutsch: Peroxid / Español: Peróxido / Português: Peróxido / Français: Peroxyde / Italiano: Perossido

Peroxide refers to a chemical compound containing an oxygen-oxygen single bond (O-O). In the environmental context, peroxides can play a significant role, both beneficial and harmful. They are often used in processes such as water treatment and pollution control due to their strong oxidative properties. However, some peroxides can also contribute to environmental pollution or pose risks due to their reactive nature.

A Peroxyacetyl nitrate (PAN) is Pollutant created by action of UV component of sunlight on Hydrocarbons and NOx in the air; an ingredient of photochemical smog.

Perpetual resource is an essentially inexhaustible resource on a human time scale. Solar Energy is an example. Compare nonrenewable resource, renewable resource.

Deutsch: Person / Español: Persona / Português: Pessoa / Français: Personne / Italiano: Persona
A person is a being, such as a human, that has certain capacities or attributes constituting personhood, which in turn is defined differently by different authors in different disciplines, and by different cultures in different times and places.

Deutsch: Schädling / Español: plaga / Português: praga / Français: nuisible / Italiano: parassita

Pest is a term used to describe an organism that is considered undesirable because it causes harm to agriculture, horticulture, forestry, or natural environments, or is hazardous to human health. Typically, this encompasses a wide range of animals, plants, and microorganisms.

Deutsch: Schädlingsbekämpfung / Español: Manejo de plagas / Português: Manejo de pragas / Français: Gestion des ravageurs / Italiano: Gestione dei parassiti

Pest management in the environmental context refers to the practices and methods used to control or eliminate populations of organisms considered pests, which can negatively impact agriculture, forestry, human health, and the environment. Effective pest management aims to reduce or mitigate the adverse effects of pests in a way that is sustainable, minimizes environmental impact, and conserves non-target species and overall biodiversity.

Deutsch: Pestizid / Español: Pesticida / Português: Pesticida / Français: Pesticide / Italiano: Pesticida /

A Pesticide is a general name for agricultural chemicals that include:

A PESTICIDE USAGE is Refers to actual applications of pesticides, generally in terms of quantity applied or units treated.

A Pesticide User Expenditures is Dollar value of purchases by persons or businesses applying pesticides, such as farmers, commercial pesticide applicators and homeowners.