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Krm 500: Soil Genesis And Classification Question Paper

Krm 500: Soil Genesis And Classification

Course:Master Of Science In Land And Water Management And Integrated Soil Fertility Management

Institution: Kenyatta University question papers

Exam Year:2012

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2011/2012
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF MASTER OF SCIENCE IN
LAND AND WATER MANAGEMENT AND INTEGRATED SOIL FERTILITY
MANAGEMENT
KRM 500: SOIL GENESIS AND CLASSIFICATION

DATE: 26TH MARCH 2012 TIME: 9.00 A.M. – 12.00 P.M.

INSTRUCTIONS: ANSWER QUESTION ONE AND ANY OTHER THREE.

1.
a)
State the conditions under which you would expect the occurrence of the following:

i)
A soil profile with ABgCR sequence of horizons.

(4 marks)

ii)
A soil profile with AEBCR sequence of horizons.

(4 marks)

iii)
A soil profile with BCR sequence of horizons.

(2 marks)

b)
Discuss the most effective chemical processes of soil formation in the tropics.

(10 marks)

c)
Discuss the following:

i)
Soil as a living skin of the planet Earth

(5 marks)

ii)
Soil as a leaving skin of the planet Earth

(5 marks)

2.
Visualise a slope in the landscape near your home area. Discuss how soil colours,

horizon thickness and drainage would likely change along the toposequence of soils

on this slope.

(10 marks)

3.
Discuss the formation and management of soils classified as Gleysols.

(10 marks)

4.
a)
State the fundamental difference between pisoplinthite and petroplinthite. (2 marks)

b)
Discuss the management and use of soils classified as Plinthosols.
(8 marks)

5.
Assume that you are planning to buy a 10-ha site on which to start an orchard irrigation

scheme. Explain step by step, how you could use soil survey information to help determine

whether the prospective site is suitable for the intended purpose.

(10 marks)
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Krm 500: Soil Genesis And Classification Question Paper

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