Elements of Soil Science - Past / old Questions - 2072 Chaitra, Bachelor in Agricultural Engineering, Tribhuvan University, Nepal, Third semester,
![TRIBHUVAN UNIVERSITY INSTITUTE OF ENGINEERING Examination Control Division 2072 Chaitra Exam: Regular Level: BE Programme: B. Agri. Year / Part: II / I Time: 3 hrs. Full Marks: 80 Pass Marks: 32 Subject: Elements of Soil Science (AE502) ✓ Candidates are required to give their answers in their own words as far as practicable. ✓ Attempt All questions. ✓ The figures in the margin indicate Full Marks. ✓ Assume suitable data if necessary. Discuss the different views of soil. [4] What do you mean by soil profile? Describe about its horizons. [6] Explain about the surface diagnostic horizons with special characteristics. [6] What are the objectives of classification? Discuss briefly about the different divisions of order in soil taxonomy. [2+6] What is the significance of soil color? [4] What do you mean by soil texture? Discuss its importance in context of agriculture. [4] Explain briefly about the types of soil structure. [4] What are the types of moisture found in soil? Explain. [4] What are the methods of determining soil moisture? Explain about any one of the direct methods in detail. [6] Write short note on soil aeration. [4] Why soil becomes acidic? How do you determine the pH of the soil in the laboratory? What treatment process can be applied for acidic soils? [3+3+2] What do you mean by soil nutrients? Classify soil nutrients according to their requirement for plants. What is the role of phosphorus for plants? What type of symptoms can be observed in case of phosphorus deficiency? [1+3+2+2] Differentiate between organic and inorganic fertilizers. What are the advantages of organic fertilizers over inorganic fertilizers? [2+2] What is bio-fertilizer? How does it work? [2+2] What is soil colloid? What are the sources of charge on soil colloid? [1+3]](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjL1iC7SemMsAyuTUgbJCFR-rh1XjlV9GpYLwL3QoM9D19Brv2nxtQJog4RoNB3Yy1gOVQBDjuodJNYtmrZg5eH_ZrOgaaMrVY2u_hUrdZBQ3kTGvayoJq7YVaYwN4XeLIsAezYKWDho241sEqmnV4Js15aNGpxZGZ2_Kqkyl2CMiiZ3dX-wjhMwieedIkb/s3264/3_soil_science_2072_chaitra.JPG "Elements of Soil Science -Past Questions - 2072 Chaitra")
TRIBHUVAN UNIVERSITY
INSTITUTE OF ENGINEERING
Examination Control Division
2072 Chaitra
Exam: Regular
Level: BE
Programme: B. Agri.
Year / Part: II / I
Time: 3 hrs.
Full Marks: 80
Pass Marks: 32
Subject: Elements of Soil Science (AE502)
✓ Candidates are required to give their answers in their own words as far as practicable.
✓ Attempt All questions.
✓ The figures in the margin indicate Full Marks.
✓ Assume suitable data if necessary.
Discuss the different views of soil. [4]
What do you mean by soil profile? Describe about its horizons. [6]
Explain about the surface diagnostic horizons with special characteristics. [6]
What are the objectives of classification? Discuss briefly about the different divisions of order in soil taxonomy. [2+6]
What is the significance of soil color? [4]
What do you mean by soil texture? Discuss its importance in context of agriculture. [4]
Explain briefly about the types of soil structure. [4]
What are the types of moisture found in soil? Explain. [4]
What are the methods of determining soil moisture? Explain about any one of the direct methods in detail. [6]
Write short note on soil aeration. [4]
Why soil becomes acidic? How do you determine the pH of the soil in the laboratory? What treatment process can be applied for acidic soils? [3+3+2]
What do you mean by soil nutrients? Classify soil nutrients according to their requirement for plants. What is the role of phosphorus for plants? What type of symptoms can be observed in case of phosphorus deficiency? [1+3+2+2]
Differentiate between organic and inorganic fertilizers. What are the advantages of organic fertilizers over inorganic fertilizers? [2+2]
What is bio-fertilizer? How does it work? [2+2]
What is soil colloid? What are the sources of charge on soil colloid? [1+3]
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