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Soil

Soil, by definition, is a earthly compound comprised of biotic (living) and abiotic (non-living) matter that is formed in several layers over millions of years. It is the very component of the Earth that plants need to root themselves and grow in in order to feed all animal life. There are many different types of soil across the globe for each continent and biome, and each type has its characteristics that depict what plants can grow where, when, and how. Questions and answers about soil can be asked and answered here.

10,730 Questions

Why surface runoff or rain not absorbed by the soil occurs much more often in areas with soils with a high clay content?

Soils with high clay content have smaller pore spaces which can limit the infiltration of water. This means that water is more likely to run off the surface rather than being absorbed into the soil. Clay soils also tend to form a crust when dry, further decreasing water absorption.

Why can it take soil thousands of years to form?

Soil formation is a slow process because it involves the weathering of rocks, deposition of organic matter, and the action of soil organisms over long periods of time. Factors such as climate, topography, parent material, and vegetation type can all influence the rate at which soil forms. This intricate process can take thousands of years to create a mature, productive soil profile.

Is soil often ends up in a series of horizontal layers true?

Yes, soil often forms horizontal layers, known as soil horizons, due to the various processes that act upon it over time such as weathering, erosion, and deposition. Each soil horizon has distinct characteristics that are a result of these processes, which can help in identifying the soil type and understanding its history.

What is it called when mechanically turns and loosens the soil to grow cops?

It is called tilling or plowing the soil. This process helps aerate the soil, improve drainage, and create a seedbed for planting crops.

What is the 5 main component in soil?

The five main components in soil are minerals (sand, silt, clay), organic matter (decaying plant and animal material), water, air, and living organisms (bacteria, fungi, worms, etc.). These components work together to support plant growth and contribute to soil fertility.

What layer does soil begins to form?

Soil begins to form in the top layer of the Earth's crust, known as the "A horizon" or topsoil layer. This layer contains a mixture of organic matter, minerals, water, and air that supports plant growth.

What most likely happens to soil when crops are not rotated from year to year?

When crops are not rotated from year to year, the soil may become depleted of specific nutrients, leading to decreased crop yields. Additionally, continuous planting of the same crop can increase pest and disease pressure in the soil, requiring more pesticides and fertilizers to maintain crop health. Soil structure may also deteriorate, leading to increased erosion and reduced water retention capacity.

Why did the grander have to work so hard to keep the soil moist?

The gardener had to work hard to keep the soil moist because dry soil can lead to stress in plants, affecting their growth and overall health. By ensuring that the soil stays consistently moist, the gardener helps the plants uptake nutrients and water efficiently, promoting their growth and development.

What are the main constituents of soil?

The main constituents of soil are mineral particles (sand, silt, clay), organic matter (plant and animal remains), air, water, and microorganisms. These components interact to create a complex ecosystem that supports plant growth and sustains life on Earth.

What are horizontal layers of soil called?

Horizontal layers of soil are called soil horizons. These layers are differentiated based on characteristics such as color, texture, composition, and structure. Soil horizons form as a result of weathering and biological activity over time.

How interactions among all earth system occur in soil?

Interactions among all Earth systems in soil occur through processes such as nutrient cycling, water filtration, and habitat provision. For example, plants extract nutrients from the soil, which then influences the composition of the atmosphere through photosynthesis. Soil acts as a critical interface between the atmosphere, biosphere, hydrosphere, and lithosphere, facilitating vital exchanges and feedback loops that sustain life on Earth.

What is the Significance of the soil texture as far as a crop production?

Soil texture is significant for crop production because it affects water retention, drainage, aeration, and root development. Fine-textured soils like clay hold water well but can become waterlogged, while coarse-textured soils like sand drain quickly but may dry out easily. The ideal soil texture for crops is loam, a balance of sand, silt, and clay that provides good water retention and drainage.

What type of soil does Nebraska have?

Nebraska has a variety of soils, including loess soils, sandy soils, and clayey soils. The predominant soil types in Nebraska are silt loams, which are fertile and well-draining, making them suitable for agriculture. The state's soils vary depending on the region and landscape characteristics.

How is testing soil composition in various locations scientist are able to determine the age of the Earth's?

By analyzing the amount and types of different elements present in the soil, scientists can estimate the age of the Earth. Radioactive isotopes found in the soil undergo decay at predictable rates, providing a way to calculate the age based on the ratios of different isotopes. This method is known as radiometric dating.

What is the level below which the soil is saturated called?

The level below which the soil is saturated is called the water table. This is the level at which the soil and rock are saturated with water and below which the spaces between soil particles are filled with water.

What does turning soil mean?

Turning soil refers to the process of breaking up and aerating the soil by digging and overturning it. This helps to improve soil structure, alleviate compaction, and promote oxygen and nutrient flow to plant roots. Turning soil is a common practice in gardening and farming to prepare the soil for planting.

What is the process when clouds turn into soil?

Clouds do not turn directly into soil. Clouds contain water droplets or ice crystals that fall to the ground as precipitation. Once on the ground, precipitation seeps into the soil, providing moisture that helps weather rock and organic matter into soil over time through processes like erosion, deposition, and decomposition.

How does soil vary with depths?

Soil varies ith depth because the farther you travel down.. the more rich the soil will be. It will have moist, nutrient filled, rich, farming, soil.

What is the relationship between soil compaction and tuber yield?

Soil compaction can lead to decreased tuber yield as it hinders root growth, limits nutrient availability, and reduces water infiltration. Compacted soils restrict air movement and can lead to poor aeration, which affects the development of tubers. Therefore, proper soil management practices to reduce compaction, such as tillage and crop rotation, can help improve tuber yield.

What are the advantages of contour plowing?

Contour plowing helps reduce soil erosion by slowing down the flow of water across a slope, which prevents soil from being washed away. It also helps to retain moisture in the soil and improve water infiltration. Additionally, contour plowing can help improve soil fertility and promote better crop growth.

Why water moves from the soil to the root hair cellexplain?

Water moves from the soil to the root hair cells through a process called osmosis, where water molecules move from an area of high water potential (soil) to an area of lower water potential (root hair cells). The presence of a concentration gradient between the soil and root cells and the selective permeability of the cell membrane facilitate this movement of water.

If a farmer wants to control soil erosion on a hill?

The farmer can use practices such as planting cover crops, contour plowing, terracing, and building retaining walls to control soil erosion on a hill. These practices help to stabilize the soil and prevent it from washing or blowing away during rainfall or wind events. Regularly monitoring the soil erosion and adjusting management practices as needed is also important.

What factors in an area help determine the type of soil the thickness of one layer and their compositions?

Factors such as climate, parent material, topography, organisms, and time can influence the type of soil, its thickness, and composition in an area. For example, a warm and wet climate can lead to thicker soil layers with high organic content, while rocky parent material can result in shallower soil layers with a different composition. The presence of vegetation and the amount of time for soil formation also play roles in determining soil characteristics.

What is percolation of waterhow it is different for different types of soil?

Percolation of water refers to the movement of water through soil or porous materials. It can vary for different types of soil due to differences in porosity, particle size, and organic matter content. Sandy soils typically have higher percolation rates due to their larger pore spaces, while clay soils have slower percolation rates because of their smaller pore spaces and tendency to compact.

In order to keep the soil fertile farmers often change the crop that is grown in a field every two to three years. What is this process called?

This process is known as crop rotation. Crop rotation helps prevent soil depletion and disease buildup by alternating different types of crops in the same area over a period of time.