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Integrated Pest Management (IPM)

A pest control strategy based on the determination of an economic threshold that indicates when a pest population is approaching the level at which control measures are necessary to prevent a decline in net returns. In principle, IPM is an ecologically based strategy that relies on natural mortality factors, such as natural enemies, weather, and crop management, and seeks control tactics that disrupt these factors as little as possible. Also, a USDA/Environmental Protection Agency program that aims to decrease pesticide applications by teaching farmers to use a variety of alternative control techniques to minimize pesticide use. These techniques include biological controls, genetic resistance, tillage, pruning, and others.

Interception

The process by which moisture is caught on plants and other surfaces and initially does not directly contact the soil surface.

Interest

The annual earnings that are sacrificed when wealth is invested in a given asset or business. The interest sacrificed by investing in a given business is often called the cost of capital.

Interference

Drawdown caused by a nearby pumping well. Interference between pumping wells can affect well yield and is a factor in well spacing for well field design.

Interflow

That part of the precipitation which infiltrates the surface soil and moves laterally through the upper soil horizons above the water table toward surface waters. Also called subsurface runoff (see baseflow).

Intergenerational Equity

Fairness between generations

Intergovernmental Panel on Climate Change (IPCC)

The IPCC was established jointly by the United Nations Environment Programme and the World Meteorological Organization in 1988. The purpose of the IPCC is to assess information in the scientific and technical literature related to all significant compone

Intermediate agricultural products

Generally refers to agricultural products that have a higher per-unit value than bulk commodities; they are often partly processed but not necessarily ready for the consumers. Examples might include soybean meal, wheat flour, vegetable oils, feeds and fodders, animal fats, hides and skins, live animals, and sweeteners such as sugars. Applied to trade policy, intermediate products are one of three categories of agricultural products used by the Foreign Agricultural Service to report export and import data under its BICO system (the others are bulk and consumer-oriented agricultural products). The agricultural trade title (Title II) of the FAIR Act of 1996 permits the Secretary of Agriculture to make available up to $100 million annually of Export Enhancement Program funds for the sale of intermediate agricultural products.

Intrinsic Values

Value that resides 'in' something and that is unrelated to human beings altogether.

intrusive

Plutonic. Antonym of extrusive.

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