what is soil in agriculture

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Soil is the loose surface material that covers most land. It consists of inorganic particles and organic matter. Soil provides the structural support to plants used in agriculture and is also their source of water and nutrients. Soils vary greatly in their chemical and physical properties.

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Answer

Which is the best soil for agriculture?

Soil is the loose surface material that covers most land. It consists of inorganic particles and organic matter. Soil provides the structural support to plants used in agriculture and is also their source of water and nutrients. Soils vary greatly in their chemical and physical properties.

What are the uses of soil in agriculture?

Agricultural Soil. In agricultural soils, as long as the climate, soil type and crop management practices are favourable for the development of a substantial soil fauna population, high soil fauna activity can lead to the formation of a strongly biogenic soil structure, dominated by excrements and channels.

How does soil influence agriculture?

The soil is a combination of biotic and abiotic components. It contains microorganisms, worms, minerals, decaying organic matters, hummus, elements like water and air which altogether makes the soil fertile and source of nutrients. The soil is mainly of …

Which US state has the best soil for agriculture?

 · Soil is a living and life-giving natural resource. As world population and food production demands rise, keeping our soil healthy and productive is of paramount importance. So much so that we believe improving the health of our Nation’s soil is one of the most important conservation endeavors of our time. Information from other sources

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What is soil definition in agriculture?

Soil is the loose surface material that covers most land. It consists of inorganic particles and organic matter. Soil provides the structural support to plants used in agriculture and is also their source of water and nutrients. Soils vary greatly in their chemical and physical properties.

What is soil answer?

ANSWER: Soil is made up of small pieces of broken rock and decaying plants (called organic matter).

Why soil is important in agriculture?

Soils supply the essential nutrients, water, oxygen and root support that our food-producing plants need to grow and flourish. They also serve as a buffer to protect delicate plant roots from drastic fluctuations in temperature.

What is soil and type of soil?

There are three basic types of soil: sand, silt and clay. But, most soils are composed of a combination of the different types. How they mix will determine the texture of the soil, or, in other words, how the soil looks and feels. One type of soil is sand. Sand within soil is actually small particles of weathered rock.

What is soil importance?

Healthy soils are essential for healthy plant growth, human nutrition, and water filtration. Healthy soil supports a landscape that is more resilient to the impacts of drought, flood, or fire. Soil helps to regulate the Earth’s climate and stores more carbon than all of the world’s forests combined.

What is soil class 12th?

Soil is the upper humus, containing a layer of the earth, consisting of rock and mineral particles mixed with decayed organic matter. Soil sustains plant life and contains numerous living organisms. Soil, along with air and water, is one of the three most important natural resources, which we cannot live without.

What is soil in agriculture PDF?

A simple. definition of soil is the material that plants grow. in and which provides them with physical support, water, and nutrients.

Which soil is most important for agriculture?

Loamy-texturedLoamy-textured soils are commonly described as medium textured with functionally-equal contributions of sand, silt, and clay. These medium-textured soils are often considered ideal for agriculture as they are easily cultivated by farmers and can be highly productive for crop growth.

Whats in the soil?

Soil is a material composed of five ingredients — minerals, soil organic matter, living organisms, gas, and water. Soil minerals are divided into three size classes — clay, silt, and sand (Figure 1); the percentages of particles in these size classes is called soil texture. The mineralogy of soils is diverse.

What are types of soil?

Soil TypesSandy soil. Sandy Soil is light, warm, dry and tends to be acidic and low in nutrients. … Clay Soil. Clay Soil is a heavy soil type that benefits from high nutrients. … Silt Soil. Silt Soil is a light and moisture retentive soil type with a high fertility rating. … Peat Soil. … Chalk Soil. … Loam Soil.

What is a soil PDF?

The recent definition of soil is the layer(s) of generally loose mineral and/or organic material that is affected by physical, chemical, and/or biological processes at or near the planetary surface and usually hold liquids, gases, biota, and support plants [1] .

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How much carbon is in soil?

It is estimated that the upper 1 m of soils contain 2000–2500 Gt (1 billion metric tons), with about 60% of this being organic carbon and about 40% inorganic carbon.

What is SOC in agriculture?

Soil organic carbon (SOC) pool of cropland soils in different regions of the world. Typically, modern agriculture depletes the carbon in soils because agricultural land has lower net primary production (NPP) than natural systems and conventional tillage practices increase soil respiration.

What is the N fertilizer used in agriculture?

Agricultural soils receive regular N applications of mineral N or organic fertilizers (farmyard manure, sewage sludge) and in some systems by intercropping, or crop rotations, with leguminous N fixing plants.

How much carbon is stored in cropland?

Globally, croplands store more than 140 Gt of carbon in the top 30 cm of soil. About 94% (132 Gt) of this carbon is stored on the 15.9 million km 2 (98% of global cropland) with a potential for significant carbon sequestration through improved soil management and farming practices.

Is metal in soil a problem?

While metals in contaminated agricultural soils can enter the food chain and increase human exposure and risk (both carcinogenic and noncarcinogenic risks), metals in forests are mainly a potential problem for groundwater resources, ecological risk, and forest health.

How does nitrate affect aquatic ecosystems?

Any nitrate escaping from agricultural soil to streams, rivers, or lakes can increase the growth of water plants and thus alter the ecology of aquatic systems. This is undesirable in itself and can also interfere with fisheries and navigation for shipping by clogging the waterway with large quantities of water weed. Nitrate can also contribute to the growth of algae in surface waters which are unsightly and some of which are toxic. When algae die the bacteria decomposing them use oxygen dissolved in the water, thus deoxygenating the water with adverse consequences for fish and other organisms. In freshwaters phosphate is usually the limiting factor controlling the growth of algae, but nitrate is also required. In river estuaries and sheltered seas (e.g., the Baltic Sea and the Gulf of Mexico), nitrate is probably the controlling factor. Thus the impact of nitrate on the ecology of natural waters is a genuine and significant reason for controlling losses from agriculture.

Is soil good for agriculture?

Soil for Agriculture. No soil is ideal hence it necessitates the preparation of the soil before and after the cultivation . Soil fertility may be lost due to continuous farming; for the replenishment of soil contents, it is prepared prior to sowing of seeds.

What is soil formation?

Soil formation is the combined result of physical, chemical and biological processes under certain environmental conditions. The soil is a combination of biotic and abiotic components. It contains microorganisms, worms, minerals, decaying organic matters, hummus, elements like water and air which altogether makes the soil fertile and source …

What are the three types of soil?

Soil formation is the combined result of physical, chemical and biological processes under certain environmental conditions. The soil is a combination of biotic and abiotic components. It contains microorganisms, worms, minerals, decaying organic matters, hummus, elements like water and air which altogether makes the soil fertile and source of nutrients. The soil is mainly of three types: sandy soil, clayey soil, and loamy soil. Among this loamy soil is more suitable for farming. An ideal soil for agriculture has the following characteristics: 1 Good water holding capacity 2 Proper aeration 3 Good consistency (texture) 4 Balanced acid and alkaline content 5 Rich in nutrients (micro and macronutrients)

What are the elements that make soil fertile?

The soil is a combination of biotic and abiotic components. It contains microorganisms, worms, minerals, decaying organic matters, hummus, elements like water and air which altogether makes the soil fertile and source of nutrients. The soil is mainly of three types: sandy soil, clayey soil, and loamy soil. Among this loamy soil is more suitable …

What is ploughing soil?

Ploughing includes loosening and digging of soil. During ploughing, the soil becomes loose and the nutrients in deep soil come to the top. Also, aeration of soil will increase thus air is available for breathing and roots are easily penetrated between soil.

What is the purpose of ploughing?

Other purposes of ploughing are the integration of manure, uprooting of weeds, removal of infectious pathogens, insects etc. Ploughs of wood or iron are used for this purpose. Bullocks or tractors are used to pull this plough. Hoe is another tool used to uproot weeds and to loose soil.

What is levelling in irrigation?

Levelling. Levelling helps in even distribution and soil is levelled after ploughing. A plank of wood or iron is used for this. Levelling also helps in water distribution without logging during irrigation. Also Refer: Irrigation.

Information from USDA

Soil is a living and life-giving natural resource. As world population and food production demands rise, keeping our soil healthy and productive is of paramount importance. So much so that we believe improving the health of our Nation’s soil is one of the most important conservation endeavors of our time.

Information from other sources

Cover Crop Topic Room — Sustainable Agriculture Research and Education (SARE) information on the value and use of cover crops, including benefits to soil health.

What is soil?

soil – (i) The unconsolidated mineral or organic material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants. (ii) The unconsolidated mineral or organic matter on the surface of the Earth that has been subjected to and shows effects of genetic and environmental factors of: climate …

What is soil in science?

soil – (i) The unconsolidated mineral or organic material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants.

What is soil made of?

This definition is from Soil Taxonomy, second edition. soil – Soil is a natural body comprised of solids (minerals and organic matter), liquid, and gases that occurs on the land surface, occupies space, and is characterized by one or both of the following: horizons, or layers, that are distinguishable from the initial material as a result …

What is soil in agriculture?

For us (from the agricultural point of view) it is an unconsolidated mineral or organic material that is on the surface of the earth in which we grow plants.

Is soil a key element in agriculture?

We all know that soil is a key element of agriculture. Without it we wouldn´t be able to grow plants, which are used as food for both humans and animals. In this blog post I would like to focus a little bit more on the technical side of soil and explain some of its chemical and physical properties. There are different definitions …

How to improve sandy soil?

There are different solutions to enhance sandy soil performance. One of them is to add more of the organic matter content. The organic matter is a mixture of living and recently dead materials such as previous crop residue, livestock waste or simple organic matter, such as leaves. The organic matter does two things for our soil.

What is organic matter?

The organic matter is a mixture of living and recently dead materials such as previous crop residue, livestock waste or simple organic matter, such as leaves. The organic matter does two things for our soil. It adds water holding capacity and nutrient holding capacity. You can envision this process by comparing organic matter to a sponge.

What is soil used for?

The soil is used to make tiles and utensils. The utensils like plates, cups, china clay and plaster of Paris etc. Tiles used in buildings or homes are made up of ceramic like soil elements.

What is the role of soil in living things?

Soil acts as a natural home ground for living beings like mice, rats, mongoose, pigs and squirrel etc. living the burrows formed in the soil. Reptiles like lizard or snakes live in the soil. Insects live in the soil and make their nests. Hence, soil furnishes a secure shelter for many living beings and flack biodiversity.

Why is soil important to the Earth?

The soil is the best natural resource available to us. It is vital for our survival on the earth. The topsoil which is desirable for the growth of plants is eroded because of human activities like making of homes, roads, buildings and city expansions.

Why are soil layers important?

On the other side, the soil layers are significant for soil microbiology, soil fertility and different soil organic matter which is contaminated and polluted deliberately because of industrial and agricultural pollution.

What is the role of soil in the growth of plants?

Soil fertility. Fertile soil aids the growth of plants. As a result, these plants produce important needs to humans like clothing, food, medicine and furniture. Even other insects and animals get food by pasturing on plants.

Why is fertile soil important?

Fertile soil aids the growth of plants. As a result, these plants produce important needs to humans like clothing, food, medicine and furniture. Even other insects and animals get food by pasturing on plants.

What is soil microbiology?

Soil Microbiology. It gives support for the endurance of many algae, bacteria, fungi etc. these microbes and bacteria live in the soil and aid in environmental balance like holding back moisture, decomposition of dead plants and dead bodies of animals etc., cleaning of waste and other harmful chemicals including plastic.

What type of soil is best for root vegetables?

Sandy soil will just fall apart. Root vegetables are usually the only types of crops that can grow in this type of soil. Clay – This soil works exactly the opposite of sandy soil. It holds onto the most moisture. Having a lot of clay is not a good thing, but a little bit can help the soil retain enough water.

What type of soil holds water well?

Silt – This soil is smooth and holds onto water well, but not as well as clay. Because it holds onto moisture, it doesn’t drain the best, which can be a problem for many crops. Because of its smooth texture, silty soil can collapse rather easily, making it harder to keep the crops thriving. Loam – If you were to look for a perfect soil, loam would …

How to tell if soil is sandy?

You can tell the soil is sandy by looking at its texture. Sandy soil is dryer than any other type of soil and has the largest particles. You can tell that a soil is sandy if you wet it and try to roll it into a ball. Sandy soil will just fall apart.

Is clay good for soil?

Having a lot of clay is not a good thing, but a little bit can help the soil retain enough water. Cruciferous vegetables, such as cabbage and broccoli often grow the best in this type of soil. Silt – This soil is smooth and holds onto water well, but not as well as clay.

Why do you plant cover crops?

If you have ‘down time,’ you’ll want to plant cover crops. These are crops that protect the soil while you are not using it. In other words, it helps keep the nutrients in the soil so that when planting season comes around again, you have the nutrients you need in your soil.

Do you need to use cover crops after planting?

No matter the type of soil you have, one factor is very important – you must use the soil even after your crops are done. If you have ‘down time,’ you’ll want to plant cover crops. These are crops that protect the soil while you are not using it. In other words, it helps keep the nutrients in the soil so that when planting season comes around again, you have the nutrients you need in your soil.

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