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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

Is it possible that there are two endopedons in one soil profile?

It is unlikely that there would be two distinct endopedons in the same soil profile, as an endopedon defines a unique and continuous soil body. However, variations within an endopedon can occur due to factors like parent material, climate, or topography, which could create different horizons within the same endopedon.

How are soil horizons produced?

Soil horizons are produced through the accumulation of organic matter, minerals, and other substances over time. This process is influenced by various factors such as climate, vegetation, topography, and parent material. As these materials accumulate and interact, distinct layers with unique characteristics form, creating the different soil horizons.

What happens to capillary action as soil particle size decreases?

Capillary action increases as soil particle size decreases because smaller particles have higher surface area that enhances water retention and movement between them. Smaller particles create a tighter network of capillaries, allowing water to move more readily through the soil.

What is soil fraction?

Soil fraction refers to the different components that make up soil, such as sand, silt, and clay. Understanding the distribution of these fractions in soil can provide insight into its physical properties, fertility, and ability to support plant growth.

Where do the essential elements in the soil come from?

Essential elements in the soil primarily come from the weathering of rocks and minerals. As rocks break down over time, they release nutrients such as phosphorus, potassium, calcium, and magnesium into the soil. These nutrients are then available for plant uptake and growth. Additionally, decomposing organic matter and biological activity also contribute to the cycling of essential elements in the soil.

What physical process results in the formation of soil?

Soil formation is primarily the result of weathering, where rocks are broken down into smaller particles by physical, chemical, and biological processes. Over time, organic matter accumulates, and minerals from the rocks mix with these organic materials to create soil. The soil profile is then further developed through the interaction of water, air, living organisms, and climate factors.

Is most of our planet made of soil?

Most of the Earth's surface is covered by water, approximately 71%. Soil is found mainly on the Earth's land mass, which makes up the remaining 29% of the planet's surface.

What is relief and how does it affect soil formation?

Relief refers to the topographic variations in a landscape, such as hills, mountains, and valleys. Relief affects soil formation by influencing factors like erosion, deposition, drainage patterns, and the accumulation of organic matter. Steep relief can lead to rapid erosion, while flat relief may promote the accumulation of sediment and organic material.

What does soil type depend on?

Soil type depends on factors such as the parent material from which it is formed, the climate, topography, organisms present, and time. These factors interact to influence the physical, chemical, and biological properties of the soil, ultimately determining its type.

What is the water drainage in loam soil?

Loam soil has moderate water drainage capabilities, meaning it allows water to infiltrate and drain at a moderate rate. It strikes a balance between retaining enough moisture for plant growth and preventing waterlogging. Properly managing water in loam soil is essential for maintaining healthy plants.

Why is asparagus planted deep?

Asparagus is planted deep to encourage the development of a strong, healthy root system. By planting the crowns (the part of the asparagus plant that produces shoots) deep in the soil, it helps protect the plant during harsh weather conditions and promotes better anchoring, resulting in increased yields and longevity of the asparagus bed.

Can cotton balls replace soil?

Cotton balls are not a suitable replacement for soil because they lack the necessary nutrients and structure to support plant growth. Cotton balls do not provide the aeration or water retention that plants require for healthy root development. It is best to use a well-draining soil mix specifically designed for plants.

Does gravity cause groundwater to move through connected pores in earth's crust?

No, gravity does not directly cause groundwater to move through connected pores in the Earth's crust. Groundwater flow is primarily driven by differences in pressure gradients and the topography of the land surface. Gravity is involved in influencing the downward movement of water through the soil and rock layers, but the actual flow of groundwater is governed by hydraulic gradients and permeability of the subsurface materials.

What is effective microoganism?

Effective Microorganisms (EM) are a mixture of beneficial microorganisms that contribute to soil health, plant growth, and waste decomposition. EM products are used in agriculture, waste management, and other fields to enhance microbial activity and improve overall environmental conditions. These microorganisms help in promoting a balanced ecosystem by outcompeting harmful pathogens and supporting beneficial processes.

Which kind of soil is good for the paddy?

Paddy rice grows best in loamy soil that is well-drained and has good water retention properties. Sandy soil can also be a good option for paddy cultivation as long as there is a reliable source of irrigation. The soil should be rich in nutrients and have a slightly acidic pH level for optimal growth of paddy rice.

The fertile land on the plain is enriched by?

nutrients from the periodic flooding of the river, which brings in silt and organic matter. This helps to replenish the soil and contribute to its fertility by providing essential minerals and nutrients for plant growth.

Which type of soil is the best of retaining impression?

Clay soil is the best at retaining impressions due to its fine particles and high moisture retention capabilities, allowing it to hold shapes well over time.

What factors influence soil pH?

Factors that influence soil pH include parent material, climate, vegetation, rainfall, land management practices, and the types of organisms living in the soil. Human activities such as agriculture, mining, and pollution can also impact soil pH.

Would tropical soil be formed by weathering?

Yes, tropical soil can be formed through weathering processes such as chemical breakdown of rocks and minerals, leaching of nutrients, and organic matter accumulation. The warm and moist climate in tropical regions accelerates weathering, leading to the development of unique soil characteristics.

What organisms in soil break down nitrogen to put it into nitrates so plants can use it?

Nitrogen-fixing bacteria, such as Rhizobium and Azotobacter, play a key role in converting atmospheric nitrogen into nitrates that plants can use. These bacteria form symbiotic relationships with plant roots, helping to enrich the soil with nitrogen compounds. Additionally, some free-living bacteria and archaea in the soil also contribute to the nitrogen cycle by converting organic nitrogen into nitrates through processes like nitrification.

What soil particle type could be added to your unknown soil sample to increase the soils permeability?

Adding sand to the soil sample can increase its permeability. Sand particles are larger than silt or clay particles, creating space between the particles for water to flow through more easily.

What has the greatest impact on soil composition?

Parent material, climate, topography, organisms, and time are the key factors that influence soil composition. These factors interact to determine the characteristics of soil, such as its texture, structure, and nutrient content. Over time, processes like weathering, erosion, and organic matter accumulation further shape soil composition.

How does Precipitation from into soil?

Precipitation infiltrates the soil through a combination of factors such as gravity, capillary action, and soil permeability. The water moves through the soil profile, distributing nutrients and minerals while recharging groundwater reserves. Excess water may cause runoff, leading to erosion and nutrient loss.

In bottomlands where water is plentiful is soil often thick thin rocky or light?

In bottomlands where water is plentiful, the soil is often rich in nutrients and organic matter, making it thick and fertile. The soil may also be relatively loose and sandy due to the frequent presence of water. Additionally, sediment deposition from flooding events can contribute to the development of thick soil layers in bottomland areas.

What is the soil type on Neptune?

Unknown, but there would be no "soil" no matter what the core consists of -

presumably rock and iron.