Soil is a mixture of rock, minerals, water, air, and organic matter. Most land plants grow in soil. Soil is important for life on Earth because soil holds...

Soil erosion is the washing or blowing away (by water or wind) of the top layer of soil (dirt). This is a serious problem for farmers. If the soil has...

Soil science deals with soil as a natural resource on the surface of the earth. It includes soil formation, classification and mapping. But many more sciences...

The Free Soil Party was, for a short duration, a political party in the United States. It was active in the 1848 and 1852 president elections, and in some...

Soil classification means that one finds categories of soils that are based on general characteristics as well as criteria that decide about the use that...

Blood and soil is a concept first developed in the 19th century. It looks at a person's blood, to see where they come from, and who their ancestors were...

Virgin Soil Upturned (Russian: Поднятая целина) is a 1939 Soviet drama movie directed by Yuli Raizman. It stars Gavriil Belov, Sergei Blinnikov, and Mikhail...

Virgin Soil Upturned (Russian: Поднятая целина) is a 1959 Soviet drama movie directed by Aleksandr Ivanov. It stars Pyotr Chernov, Yevgeny Matveyev, and...

water present in a porous substance, such as soil. This term is used in hydrogeology, soil science and soil mechanics. In saturated groundwater aquifers...

Potting soil is also known as potting mix. The main use for potting mix is to give the plant a place for its roots to grow. Many potting mixes contain...

Mud is soil, silt, loam or clay, mixed with water. It is a type of soil that is also called "clay soil". Others include the sandy soil, or sand, and garden...

where natural forces like water, wind, ice, and gravity transport rocks and soil. It is a geological process, and part of the rock cycle. Erosion occurs at...

In geology, permafrost is soil that stays frozen all year. To be called permafrost, soil must stay at or below 0 °C (32 °F) for two or more years. Permafrost...

in Hauts-de-France in the Somme department in north France. Most of the soil and subsoil in the area is made up of slopes with white or marly chalk. In...

Silt is soil or rock that develops from granular material between the size of sand and clay. Silty soil has much smaller particles than sandy soil, so it...

irrigation. Black soil or alluvial soil is the best for this crop. Sugarcane requires a large amount of water. As such, holding deep soil is required. As...

lines of dirt behind it. Turning the soil buries weeds, brings more nutrients to the top, and loosens the soil. Crops grow better in land that has been...

Mineralogy – minerals Sedimentology – sediments (clays, sands, gravels, soils, etc.) Stratigraphy – layered sedimentary rocks and how they were deposited...

of soil nutrients and erosion of top soil. In Surface irrigation, water from a source such as rivers, pipes, dams, canals e.t.c. floods the soil surface...

which is very bad for the environment. Conserving soil Intercropping also helps to conserve soil. When One crop is harvested and it starts raining the...

water, and there is often good soil in a valley to grow crops. Mountains and hills are made when the layers of rock and soil (called "strata") get folded...

between carbon and hydrogen. Soil is composed of minerals and organic matter, as well as living organisms. The organic matter in soil comes from plants and animals...

for: dirt. Dirt may refer to: Soil, on the ground (usually used in North America) Waste material, an unwanted mixture of dust, soil, and other solids....

There is no vegetation to protect the soil, which is then removed by flash floods and strong wind. This leads to soil erosion. Finally, the desert spreads...

is the study of soil in relation to how it affects plant growth. Agronomists work to make methods that will improve the use of soil and increase the...

the environment there are different interactions between animals, plants, soil, water, and other living and non-living things. The word environment is used...

Pedogenesis or soil evolution (formation) is how soil is created. Climate regulates soil formation. Soils develop more in areas with more rainfall and...

and interrupted reproduction. Drainage changed the soil's water content, and soil erosion lost soil. Estimates differ of how much original tallgrass prairie...

Humus (or humous) is the organic matter in the soil. It is made of dead parts of plants and animals. Humus takes in water and has plenty of nutrients....

tree and grow roots as soon as they touch any kind of soil. During low tide, they may fall in soil rather than water and start growing where they fall....

clove can grow into a new plant. Find a place with good soil that is not too wet or too dry. The soil should have organic matter, like compost or manure,...

Only the top of the soil, called tundra, melts each season. Because of this, most of the soil is frozen all the time. This frozen soil is called permafrost...

long-standing. The land has been settled (peopled) since the ice age. The soil is generally very fertile, and the land was once heavily forested. Much of...

The geological makeup of rock and soil controls the type of shore which is created. Erosion of sedimentary soils can make a sandy or pebbly shore, usually...

weather, and the poor soil. Fallen branches, needles, and dead animals do not decay as fast as in warmer regions. This is why the soil in coniferous forests...

can tell you how much acid is in the soil the plant is growing in. Alkaline soil produce pink flowers. Acidic soil produce blue flowers. Wikispecies has...

of a plant is the part that is usually buried in the soil. Roots are usually always under the soil, though–sometimes roots can be above the ground. This...

they are forced out of the water-logged soil. Many gardeners welcome earthworms, as they aerate and enrich the soil with their droppings. They are also found...

the surface of the soil. In this way it is different from a plow, which cuts deeper into the soil. A plow also lifts up the soil and tips it over, but...

Earth. Above the bedrock is usually an area of broken and weathered rock, soil, sand, pebbles, etc. The top of the bedrock is known as the rockhead and...

the common sage. It likes warm, quite dry soil with some shade but it will grow in almost any garden soil. It can live through winter but after three...

preserving forests: Regulates the water cycle to some extent Produces soil, and prevents soil erosion Provides habitats for animals Provides some of our oxygen...

something per litre of water, or one milligram of something per kilogram of soil. Just as per cent means out of a hundred, so parts per million or ppm means...

under and incorporated into the soil. Green manures usually perform several functions, that include soil improvement and soil protection: Leguminous green...

nitrogen straight from the air, and are known for putting nitrogen back into soil in a useful form as nitrates or ammonia. This is called nitrogen fixation...

mining is done when the coal is near the surface. Coal miners remove the soil above the coal. The coal can then be removed without the coal miners having...

land when the soil below it is flooded. This is a big part of the water cycle. This a prime cause for soil erosion and degradation of soil. Robert E. Horton...

the moist and humid conditions just mimics a wet soil. However, the seeds can germinate under soil too. "UCLA: The Mildred E. Mathias Botanical Garden"...

Canyons can be formed by erosion by running water which will take rocks and soil away. Canyon -National Geographic This short article about a place or feature...

Port Silt Loam is the state soil of Oklahoma. This type of soil is reddish in color due to the weathering of reddish sandstones, siltstones, and shales...