6. Describe the process of bulk production of Trichoderma sp. and its utility in control of various plant diseases.
Explain the various steps involved in the development of new apple orchard.
Explain the package of practices in saffron cultivation in Kashmir. 45
7. Answer any five of the following

BPH and its control in Paddy.


What is virus and how they replicate


Saphrophytes and their role in farming.

Parasitoids and their utility.


Chromosomal aberrations and consequences.


Gene interaction.


Great Bengal famine.
Give the causal agent of following pests/diseases and their control measure (any five)
Rust disease of coffee Apple Scab
Downy mildew of maize Rhizome rot of ginger
Late blight of potato Red leaf of cotton
Citrus dieback (viii) Boll Shedding in cotton. 45
8. Write short notes on any five of the following

Biological control of pests and diseases.


Plant quarantine and its importance.


Plant growth hormones and their utility.

Transpiration is inevitable for plant growth.


Seed dormancy and how to overcome


Boom and bust cycle in plant diseases.


Cross protection in plant disease management. 45
EFG-45555 4 400
Total No. of Printed Pages 4 Roll No. ............................

1(CCE.M)2
Agriculture—II





Time Three Hours] [Maximum Marks 300
INSTRUCTIONS

Answers must be written in English.


The number of marks carried by each question is indicated at the end of the question.


The answer to each question or part thereof should begin on a fresh page.

Your answer should be precise and coherent.


The part/parts of the same question must be answered together and should not be interposed between answers to other questions.


Candidates should attempt question nos. 1 and 4 which are compulsory and any four more out of the remaining questions.


If you encounter any typographical error, please read it as it appears in the text-book.
(viii) Candidates are in their own interest advised to go through the General Instructions on the back side of the title page of the Answer Script for strict adherence.

No continuation sheets shall be provided to any candidate under any circumstances.


Candidates shall put a cross on blank pages of Answer Script.



EFG-45555 1 Contd.
No blank page be left in between answer to various
questions.
No programmable Calculator is allowed.
(xiii) No stencil (with different markings) is allowed.
1. Define any ten of the following
Marker Assisted Breeding
Protein Synthesis
Anticodon
Mutation
Acclimatization
Transduction
Genotype
(viii) Horizontal resistance
Transpiration
Systemic fungicide
Sex pheromones
Vectors.
Define transgenic plants. What is the purpose of producing them
Give successful transgenic plants with beneficial traits. 60
2. Differentiate between the following (any five)
Cybrid and hybrid
Monohybrid and dihybrid
Dominance and epistasis
Male sterility and self in-compatibility
Contact pesticide and systemic pesticide
Chemical control and biological control of pests
Pest tolerance and Pest resistance.
Explain in detail the principles and practices of integrated pest
management. 45

3. Describe any five of the following
White ants Sex pheromones
Bt cotton Heterosis
Incomplete dominance Brown Plant Hopper
Hybridization.
What is golden rice and in what way it is different from other
rice Similar efforts in other crops with successful case studies
may be explained. 45
4. Give scientific reasons for any five of the following
Use of sex pheromones is eco-friendly pest control.
Bt cotton offers eco-friendly cotton cultivation opportunities.
Balance of life in nature exists in insects.
Cultivation of Land races is beneficial in the long run.
Boardux mixture use is allowed under organic farming.
Scientific nutrient management has a role in pest and
disease management.
Seed production needs proper isolation distance
management.
Enumerate etiology, characteristic symptom, disease cycle and
method of management of Rice blast or Apple scab or Potato
late blight. 60
5. Explain following terms (any five)
Photoperiodism
C3, C4 and CAM plants
Turgorpotential
Foundation seeds
Approach grafting
Fertigation
Microbial control of pests.
Horticultural crops provide great opportunity for diversifying
crops and income under adverse farming conditions also in
India. Explain with any case studies. 45

EFG-45555 2 Contd. EFG-45555 3 Contd.