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Nar 0140: Soil Genesis And Classification Question Paper

Nar 0140: Soil Genesis And Classification

Course:Diploma In Agricultural Education And Extension

Institution: Meru University Of Science And Technology question papers

Exam Year:2011

University Examinations 2010/2011

FIRST YEAR, FIRST SEMESTER EXAMINATIONS FOR DIPLOMA IN
AGRICULTURAL EDUCATION AND EXTENSION/CERTIFICATE IN

AGRICULTURE

NAR 0140: SOIL GENESIS AND CLASSIFICATION

DATE: APRIL 2011 TIME: 11/2 HOURS

QUESTION ONE – (30 MARKS)
(a) Explain ten important uses of soil (10 Marks) (b) Name the main world reference based soil classification. (3 Marks) (c) Explain the difference between hydration and hydrolysis chemical soil weathering. (4 Marks) (d) Explain how the physical characteristic nature of the rock influences the rocks weathering processes. (5 Marks) (e) Explain how translocation of weathered minerals occurs. (8 Marks)
QUESTION TWO – (15 MARKS)
(a) Explain the factors that influence weathering of minerals in soil. (5 Marks) (b) Explain the processes of soil synthesis. (5 Marks) (c) Explain the factors that influence soil formation. (5 Marks)
QUESTION THREE - (15 MARKS)
(a) Explain the factors that affect the availability of soil moisture to plants. (5 Marks) (b) What are the main sources of organic matter of the soil? (5 Marks) (c) By giving examples explain the degradation of soil (5 Marks)
QUESTION FOUR – (15 MARKS)
(a) Describe three types of soil moisture. (3 Marks)

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(b) Explain four structural classes of soil. (4 Marks) (c) Explain the following soil characteristics: (i) Soil texture (ii) Soil color (iii) Soil resistivity (iv) Bulk density (8 Marks)
QUESTION FIVE – (15 MARKS)
(a) Describe the various soil orders of the world. (12 Marks) (b) State the various categories of soil structures. (3 Marks)

Nar 0140: Soil Genesis And Classification Question Paper

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