SAC 311 Problematic Soils and their Management & Geo informatics (1+1) Question Paper

 UNIVERSITY OF AGRICULTURAL SCIENCES, BANGALORE

Final External Examination for III Year I Semester 2024-25
SAC 311 Problematic Soils and their Management & Geo informatics (1+1)
Date: 13.01.2025
Time: 55 Mins. (11.20 AM to 12.15 PM)
Marks: 25

PART - B : DESCRIPTIVE TYPE QUESTIONS

Instructions:

1. Answers for Part-B (Descriptive type questions) should be written only in the answer booklet.

2. Answers should be written only within the box provided in the answer booklet.

II. ANSWER ANY FIVE OF THE FOLLOWING (5 x 2 = 10)
51. Classify the salt affected soils based on pH, EC and ESP values.
52. Explain the factors affecting buffering capacity of soils.
53. Illustrate the role of aluminium in development of soil acidity.
54. Define bioremediation and suggest any four tree species for heavy metal contaminated soils.
55. Differentiate between active sensing device and passive sensing device.
56. Define geo-informatics and mention its tools.
57. Describe different types of crop modeling.

III. ANSWER ANY THREE OF THE FOLLOWING (3 x 5 = 15)
58. Define soil quality. How is it different from soil health? Briefly explain soil quality indicators.
59. Mention sources of soluble salts in soil and discuss reclamation and management of alkali soils.
60. Give salinity, sodicity and bicarbonate hazard classes of irrigation water.
61. Describe in detail, the land capability classification and land suitability classification.
62. Define Geographic Information System (GIS) and discuss its components.