AGRICULTURE (CODE

Time: 3 hrs Maximum Marks: 150
Note: Attempt five questions in all. All questions carry equal marks i.e. 30, Question No.1 is compulsory. Answer two questions from Part I and two questions from Part II. The parts of the same question must be answered together and must not be interposed between answers to other questions.
1. Write critical notes on any five ofthe following: x Apomixis Relay cropping No Tillage Soil texture Biopesticides Composites and synthetic varieties Vernalization
Part-I
2.
Discuss in detail the problems of green revolution What is integrated nutrient management? Explain its advantages. What are the different mineral and organic constituents of soils? Discuss their role in

maintaining soil productivity. (3xl0=30)

3.
Explain the factors affecting choice of method of irrigation. Discuss the agronomic practices for the production of wheat and sugarcane crops. Explain the advantages ofcrop diversification?


(3xl0=30)
4. Discuss principles, objective and scope ofextension in agriculture. What is soil fertility and describe the strategies for its maintenance. Differentiate between farm planning and budgeting. Describe various types of farm
budgeting. (3xlO=30)
II1TN-EB-12
Part-II
5. a) What is quality seed production and discuss various factors affecting it? Describe back cross method ofbreeding. Discuss its requirements and implications. Explain different mechanisms which promote selfand cross pollination in crop
plants. (3xlO=30)
6.
Differentiate between C3, C4 and CAM plants along with suitable examples. Discuss in detail the causes and classification ofplant diseases. Discuss in detail the insect pests ofpulses along with their damage and control

measures. (3xlO=30)

7.
What is photosynthesis and describe factors affecting this process? Describe in detail the various types of insect biological control agents. Discuss important diseases ofwheat crop along with their symptoms and control.


(3xlO=30)
II1TN-EB-12 2