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Compiled by the library staff of the Soil Conservation Service from publications received in the United States Department of Agriculture Library Vols. 1-6, no. 2 issued by the U.S. Soil Conservation Service; - by the National Agricultural Library Description based on: Vol. 1, no. 2 (Mar./Apr. 1937); title from cover
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Soil biology is the study of microbial and faunal activity and ecology in soil. Soil life, soil biota, soil fauna, or edaphon is a collective term that encompasses all organisms that spend a significant portion of their life cycle within a soil profile, or at the soil-litter interface.
Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. [1] Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in the cities. While humans started gathering grains at least ...
The use of agricultural chemicals has been linked to the decline of plant and animal species, as well as harm to soil biodiversity, including bacterial and fungal communities. [ 12 ] [ 13 ] Chemical plant protection products can alter agricultural soils by affecting their physical properties such as texture, permeability, and porosity.
About 1,000 soil subgroups are defined in the United States. [6] A soil family category is a group of soils within a subgroup and describes the physical and chemical properties which affect the response of soil to agricultural management and engineering applications. The principal characteristics used to differentiate soil families include ...