LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – APRIL 2012

PB 5409 – PRINCIPLES OF AGRICULTURE

 

 

Date : 27-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

Part A

 

Answer all the following, each within 50 words:                                                     (10 x 2 =20 marks)

 

1. Define Agriculture?
2. Enumerate the climatic factors involved in crop growth.
3. What is water-logged soil?
4. Write any two water use efficiencies in relation to crop production.
5. Define organic farming.
6. What is the role of nitrogen fertilizers?
7. Mention any four implements and their uses.
8. Distinguish between inter cropping and inter planting.
9. What do you meant by agricultural extension programme?
10. Define Botanical pesticides. Give two examples.

 

 

PART B

 

Answer the following, each answer within 500 words. Draw diagrams wherever necessary:

            (5 x7 = 35 marks)

11. a) Discuss the role of Agriculture in India

(or)

 

1. b) Highlight the impacts of changing environment in crop production.

 

12. a) Give a brief account on the criteria’s for scheduling irrigations in crop production.

(or)

 

1. b) Distinguish between Drip and Sprinkler irrigation.

 

13.a) Write notes on chemical and biological properties of soil.

(or)

1. b) Explain the role of soil nutrients in Agriculture.

14 a). Describe the methodology of seed bed preparation.

(or)

b). Explain the agronomic practices followed in sugarcane cultivation.

 

15 a). What is a weed? Mention its characteristic features.

(or)

b). Explain the importance of integrated pest management.

 

 

Part C

 

Answer any three of the following, each answer within 1200 words. Draw diagrams wherever necessary:                                                                                                              (3x 15 =45 marks)

 

 

16. Explain the modern methods of crop cultivation.
17. Discuss the effect of industrial effluents on soil and water.
18. Classify the Indian soils and discuss their role in maintaining soil productivity.
19. Write notes on: a. intercultivation b. crop rotation c. mixed cropping
20. Give an account on various control measures to protect crops from pest.

 

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – NOVEMBER 2012

PB 5409 – PRINCIPLES OF AGRICULTURE

 

 

Date : 16/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

Part A                                                                   (20 marks)

Answer the following, each within 50 words:                                                                  (10 x 2 =20 marks)

 

1.  What is green revolution?
2. Mention the tools used in seed sowing.
3. Distinguish between alluvial and black soil.
4. Enlist the sources of irrigation.
5. Define organic farming.
6. Mention any two nitrogen and phosphorus fertilizers.
7. Differentiate intercropping from interplanting.
8. What are Sets?
9. Define a pest.
10. Enumerate the importance and role of agricultural extension.

 

PART B                                                  ( 5 x 7 = 35 marks)

Answer the following, each within 500 words only. Draw diagrams and flowcharts wherever necessary.

 

11a. Give a brief account on classification of Agriculture

Or

1. Briefly explain the agronomic practices followed in agriculture.

 

12a. Enumerate the effect of industrial effluents on soil and water.

Or

1. Describe the methodology on agricultural soil collection and testing.

 

13a. Explain the role of major nutrients in crop growth.

                                    Or

1. Give a brief account on the methods and time of application of fertilizers.

 

14a. Write notes on intercultivation and crop rotation

Or

1. Describe the agronomic practices followed in sugarcane cultivation.

 

15a. Enumerate the characteristic features of weeds.

Or

1. Explain the importance of integrated pest management programme.

 

 

 

 

 

 

PART C                                                  (3 x15 = 45 marks)

 

Answer any three of the following, each within 1200 words only. Draw diagrams and flowcharts wherever necessary:

 

16. Discuss on current Indian agriculture scenario. Add a note on its concerns.
17. Describe the methods of irrigation.
18. Write an essay on Biofertilizers.
19. Explain the types of cropping pattern in agriculture.
    20. List out the diseases and causal agents that affect paddy and wheat. Add a note on chemical

and biological methods to control the diseases.

 

 

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