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The chemistry and fertility of soils have been of concern to humans since ancient times. One of the earliest books to correctly identify the soil as the source of plant mineral nutrients is Organic Chemistry in its Application to Agriculture and...

Soil physical properties are those related to the size and arrangement of solid particles, and how the movement of liquids and gases through soils is affected by the particles. Soil mineral particles are derived from the weathering of rocks and...

Soil is the unconsolidated mineral material on the immediate surface of the earth that serves as a natural medium for the growth of land plants. Soil is found on all surfaces except on steep, rugged mountain peaks and areas of perpetual ice and snow....

Additions of plant debris to soils will initiate the build up of organisms that will decompose the plant debris. After decomposition the organic material will be called organic matter or soil humus. This decomposed plant debris will be in the form of...

Soil is a naturally occurring, unconsolidated or loose material on the surface of the earth, capable of supporting life.[1] In simple terms, soil has three components: solid, liquid, and gas. The solid phase is a mixture of mineral and organic matter....

Biological organisms give soil its life and energy and are responsible for driving most of the chemical reactions and transformations that occur. Part IV Richard Stehouwer THE fourth and final article in this series on soil science fundamentals focuses on soil...

The ecological discourse on planet earth, global hunger, threats to life, urges us to look down at the soil, humbly. We stand on soil, not on earth. From soil we come, and to the soil we bequeath our excrements and remains. And yet...

The millions of acres scorched by wildfires and left susceptible to mudslides can be shored up by spreading inexpensive granules that a company says will keep barren soil in place when the rainy season arrives.U.S. Forest Service scientists have been testing Encap LLC's product that...

Al-Qaida is using its growing strength in Pakistan and Iraq to plot attacks on U.S. soil, heightening the terror threat facing the United States over the next few years, intelligence agencies concluded in a report unveiled Tuesday.At the same time, the intelligence analysts worry that...