Aquifer
Pore spaces found within permeable layers of rock and sediment underneath the soil that store groundwater
Unconfined aquifer
Porous rock covered by soil
Confined aquifer
Surrounded by a layer of impermeable rock or clay, which impedes water flow to or from the aquifer
Water table
The uppermost level at which groundwater in a given area fully saturates the rock or soil
Groundwater recharge
The process by which water from precipitation percolates through the soil into groundwater
Spring
Water that naturally percolates up to the surface
Artesian well
A well created by drilling a hole into a confined aquifer
Water footprint
Total daily per capita use of freshwater for a country of the world
Per capita
Per person
Furrow irrigation
A form of irrigation where the farmer digs trenches, or furrows, along the crop rows and fills them with water
Flood irrigation
A form of irrigation where an entire field is flooded with water
Spray irrigation
A form of irrigation where water is pumped into an apparatus that contains a series of spray nozzles
Drip irrigation
A form of irrigation where a slowly dripping hose on the ground or buried beneath the soil delivers water directly to the plant roots
Cone of depression
An area surrounding a well that does not contain groundwater
Fungicide
A pesticide that specifically targets fungi (the plural of fungi)
Rodenticide
A pesticide that specifically targets rodents
Persistent pesticides
Pesticides that remain in the environment for years of decades
Nonpersistent pesticides
Pesticides that break down relatively rapidly, usually in weeks to months, and have fewer long-term effects but because they must be applied more often their overall environmental impact is not always lower than that of persistent pesticides
Integrated pest management (IPM)
An agricultural practice that uses a variety of techniques to minimize pesticide inputs
Pesticide resistance
A trait possessed by certain individuals that are exposed to a pesticide and survive
Concentrated animal farming operation (CAFO)
A large indoor or outdoor structure designed for maximum occupancy of animals and maximum output of meat
Manure lagoon
Human-made pond lines with rubber built to handle large quantities of manure produced by livestock
Free range grazing
Allowing animals to graze outdoors on grass for most or all of their lifecycle
Nomadic grazing
The feeding of herds of animals by moving them to seasonally productive feeding ground, often over long distances