Question 10
What are pore spaces?
Question 11
What is the percolation rate of the soil?
Question 12
Why do plants grow well in loamy soil?
Question 13
Differentiate between cover crops and shelterbelts?
Question 14
How is humus formed?
Question 15
What is the water holding capacity of soil?
Question 16
What are the different layers of soil called?
Question 17
Describe the main horizons of soil?
Question 18
With the help of a diagram explain the stages of soil formation?
Question 19
What is weathering? List the different types of weathering?
Question 20
How is soil classified based on its absorption capacity? Give one property for each type?
Question 21
Explain the different layers in a soil profile?
Question 22
Explain the different properties of soil?
Question 23
List the types of soil suitable for the growth of crops? Give two examples of crops that can be grown in each type?
Question 24
What is soil pollution? Name three causes and preventive measures of soil pollution?
Answers
10. What are pore spaces?
Pore space is defined by porosity of a material possessing free space between the mineral grains, expressed as percentage.
11. What is the percolation rate of the soil?
Percolation speed depends greatly on the soil type. Sandy soils usually have very high percolation rates, measured in the range of 1 to 8 inches or more per hour. That means sandy soils dry out very quickly, heat up very quickly and do not hold nutrients for very long.
12. Why do plants grow well in loamy soil?
Loamy soil is made up of clay, silt and sand in fairly equal amounts. The soil allows water to drain easily, holds just the right amount of moisture for plants to thrive and allows air to seep through. Gardeners recommend loamy soil for most plants.
13. Differentiate between cover crops and shelterbelts?
Cover Crops:-
A cover crop is a crop of a specific plant that is grown primarily for the benefit of the soil rather than the crop yield. Cover crops are commonly used to suppress weeds
Shelterbelts:-
Shelterbelts are barrier of trees and shrubs that provides protection (as for crops) from wind and storm and lessens erosion.
14. How is humus formed?
Humus is a dark soil material that is one of the three components resulting from the degradation of organic material in soil. The other two are heat and simple end products (like nitrogen, carbon etc.) Humus is formed when organic material (such as leaves, dead animals etc.) is degraded by a combination of fungi.
15. What is the water holding capacity of soil?
All of the water held by soil is not available for plant growth. Two separate laboratory tests are required to determine how much plant available water a soil can hold. The first test run on the soil determines the amount of water the soil can hold at field capacity.
16. What are the different layers of soil called?
Besides the main horizons there are other layers of soil usually six layers which are- O, A, E, B, C, R: – LAYER O (HUMUS)- The top organic layer which is made up of defoliation and hummus is known as O layer. LAYER A (TOPSOIL)- The next layer below the O layer is called topsoil means layer A.
17. Describe the main horizons of soil?
Most soils have three major horizons (A, B, C) and some have an organic horizon (O). The horizons are: O - (humus or organic) Mostly organic matter such as decomposing leaves. The O horizon is thin in some soils, thick in others, and not present at all in others. A - (topsoil) Mostly minerals from parent material with organic matter incorporated.
18. With the help of a diagram explain the stages of soil formation?
Stages of Soil Formation: A. Decomposition of Parent Material: Soils are formed by disintegration and decomposition of rocks and vegetables and animal fossils imbedded in them. The conversion of parent material into soil is known as soil formation.
19. What is weathering? List the different types of weathering?
Weathering is the breaking down of rocks, soils, and minerals as well as wood and artificial materials through contact
The four main types of weathering include freeze-thaw, exfoliation, chemical and biological weathering. Weathering involves the process of rock breaking down into soil via various physical, biological and chemical reactions.
20. How is soil classified based on its absorption capacity? Give one property for each type?
Soil can be classified into 3 primary types based on its texture – sand, silt, and clay. However, the percentage of these can vary, resulting in more compound types of soil such as loamy sand, sandy clay, silty clay, etc.
21. Explain the different layers in a soil profile?
The soil is divided into various different layers top to bottom and this arrangement is termed as the soil horizons. The categorization into various soil layers is known as the soil profile.
22. Explain the different properties of soil?
All soils contain mineral particles, organic matter, water and air. The combinations of these determine the soil’s properties – its texture, structure, porosity, chemistry and colour. Soil is made up of different-sized particles.
Bro..Slot full...it is showing
that..answer can't be more
than 500 characters.
Sorry bro..!!☹️
Answer:
10. What are pore spaces?
Pore space is defined by porosity of a material possessing free space between the mineral grains, expressed as percentage.
11. What is the percolation rate of the soil?
Percolation speed depends greatly on the soil type. Sandy soils usually have very high percolation rates, measured in the range of 1 to 8 inches or more per hour. That means sandy soils dry out very quickly, heat up very quickly and do not hold nutrients for very long.
12. Why do plants grow well in loamy soil?
Loamy soil is made up of clay, silt and sand in fairly equal amounts. The soil allows water to drain easily, holds just the right amount of moisture for plants to thrive and allows air to seep through. Gardeners recommend loamy soil for most plants.
13. Differentiate between cover crops and shelterbelts?
Cover Crops:-
A cover crop is a crop of a specific plant that is grown primarily for the benefit of the soil rather than the crop yield. Cover crops are commonly used to suppress weeds
Shelterbelts:-
Shelterbelts are barrier of trees and shrubs that provides protection (as for crops) from wind and storm and lessens erosion.
14. How is humus formed?
Humus is a dark soil material that is one of the three components resulting from the degradation of organic material in soil. The other two are heat and simple end products (like nitrogen, carbon etc.) Humus is formed when organic material (such as leaves, dead animals etc.) is degraded by a combination of fungi.
15. What is the water holding capacity of soil?
All of the water held by soil is not available for plant growth. Two separate laboratory tests are required to determine how much plant available water a soil can hold. The first test run on the soil determines the amount of water the soil can hold at field capacity.
16. What are the different layers of soil called?
Besides the main horizons there are other layers of soil usually six layers which are- O, A, E, B, C, R: – LAYER O (HUMUS)- The top organic layer which is made up of defoliation and hummus is known as O layer. LAYER A (TOPSOIL)- The next layer below the O layer is called topsoil means layer A.
17. Describe the main horizons of soil?
Most soils have three major horizons (A, B, C) and some have an organic horizon (O). The horizons are: O - (humus or organic) Mostly organic matter such as decomposing leaves. The O horizon is thin in some soils, thick in others, and not present at all in others. A - (topsoil) Mostly minerals from parent material with organic matter incorporated.
18. With the help of a diagram explain the stages of soil formation?
Stages of Soil Formation: A. Decomposition of Parent Material: Soils are formed by disintegration and decomposition of rocks and vegetables and animal fossils imbedded in them. The conversion of parent material into soil is known as soil formation.
19. What is weathering? List the different types of weathering?
Weathering is the breaking down of rocks, soils, and minerals as well as wood and artificial materials through contact
The four main types of weathering include freeze-thaw, exfoliation, chemical and biological weathering. Weathering involves the process of rock breaking down into soil via various physical, biological and chemical reactions.
20. How is soil classified based on its absorption capacity? Give one property for each type?
Soil can be classified into 3 primary types based on its texture – sand, silt, and clay. However, the percentage of these can vary, resulting in more compound types of soil such as loamy sand, sandy clay, silty clay, etc.
21. Explain the different layers in a soil profile?
The soil is divided into various different layers top to bottom and this arrangement is termed as the soil horizons. The categorization into various soil layers is known as the soil profile.
22. Explain the different properties of soil?
All soils contain mineral particles, organic matter, water and air. The combinations of these determine the soil’s properties – its texture, structure, porosity, chemistry and colour. Soil is made up of different-sized particles.