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Nar0140:Soil Genesis And Classification Question Paper

Nar0140:Soil Genesis And Classification

Course:Diploma In Agriculture

Institution: Meru University Of Science And Technology question papers

Exam Year:2013

QUESTION ONE – (30 MARKS)
a. Briefly explain the functions of soil in our ecosystem. (10 Marks) b. State the use and farm management practices of histols. (5 Marks) c. Explain the importance of organic matter in the soil. (6 Marks) d. Describe the Ground Penetration Radar method of soil investigation. (5 Marks) e. Explain how clay and humus influences soil properties. (4 Marks)
QUESTION TWO – 15 MARKS
a. Differentiate between particle density and bulk density. (4 Marks) b. A soil sample has a bulk density of 1.2g/cm3 and a particle density of 2.6g/cm3. Calculate the percentage pore space. (6 Marks) c. Explain the factors that influence the soil structure. (5 Marks)
QUESTION THREE – 15 MARKS
a. Explain how the following factors influence soil formation: (12 Marks) i. Topography ii. Parent material iii. Living organisms b. State the sources of organic matter in the soil. (3 Marks)
QUESTION FOUR – 15 MARKS
a. Describe the importance of soil profile on crop production. (10 Marks) b. Explain the electro-magnetic induction method of soil investigation. (5 Marks)
2
QUESTION FIVE – 15 MARKS
a. Explain three processes involved in soil formation. (6 Marks) b. Describe the characteristics of vertisols. (5 Marks) c. State two systems of soil classification. (2 Marks) d. State the characteristics of land class III. (2 Marks)

Nar0140:Soil Genesis And Classification Question Paper

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