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Ahs2208:Soil Genesis,Physics And Classication Question Paper

Ahs2208:Soil Genesis,Physics And Classication

Course:Bachelor Of Horticulture

Institution: Meru University Of Science And Technology question papers

Exam Year:2013

QUESTION ONE – (30 MARKS)
a) Define soil? ( 2 Marks) b) Explain the features of soils that are formed as a result of the parent materials transported by wind ( 4 Marks) c) By giving two examples, explain the three categories of soil forming rocks.( 9 Marks) d) Describe the soil orders as characterized by USDA soil taxonomy ( 6 Marks) e) Explain the following terms: i. Soil Texture ii. Soil Family iii. Translocation iv. Colluvial debris v. Elluviation ( 5 Marks)
f) Explain the various sources of organic matter in the soil. ( 4 Marks)
QUESTION TWO ( 20 MARKS)
a) What are the hydromorphic soils and how are they characterized ( 10 Marks) b) Explain how the soil colour is used to determine the geological properties of a region (10 Marks)
2
QUESTION THREE ( 20 MARKS)
a) Use a diagram, demonstrate the interaction of the parent materials, air Water, and the organic matter in a pedosphere. ( 10 Marks) b) Explain the characteristics and distribution of the Andosols soils. ( 10 Marks)
QUESTION FOUR ( 20 MARKS)
a) Explain the structure and the related properties soil water that makes water to have high ability to influence many soil processes. ( 15 Marks) b) Highlight five soil weathering processes ( 5 Marks)
QUESTION FIVE ( 20 MARKS)
a) Define the soil catena. (3 Marks) b) Explain the various surface epipedons according to the 1975 USDA soil taxonomy. (12 Marks) c) Highlight the characteristic feature in the A – horizon. (5 Marks)

Ahs2208:Soil Genesis,Physics And Classication Question Paper

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