Subcategories

   

 

0-9   A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Plastic mulch

Plastic sheet covering the soil surface to increase the temperature or suppress weeds.

Ploughing (tillage)

Mechanical cultivation of agricultural soils by the plough to different depths (20 - 30cm), creating arable land.

Plow pan

A compacted layer in the subsoil originating from subsequent ploughings.

Pocosin

A bog formed in shallow depressions with poor drainage, supporting predominantly evergreen shrubs or small trees.

Population

All the individuals of a species in a given area.

Pores

The space in-between particles or aggregates of soil that can become filled with air or water.

Porosity

Volume of water and air that can be held in a soil; ratio of the volume of voids to the total volume of the soil.

Potentially mineralizable nitrogen (PMN)

A test measuring the amount of soil organic nitrogen converted to plant available forms under specific conditions of temperature, moisture, aeration, and time. It is a measure of biological activity and indicates the amount of N that is relatively rapidly available.

Precipitation

Water reaching the ground from rainfall, snow and hail.

Precision farming (precision agriculture)

A management strategy that utilizes site-specific information to precisely and economically manage and optimize production inputs. (USDA NAL glossary)
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