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Serial No. 5901
FORESTRY

Paper-I
[Time Allowed.-Three Hours) [Maximum Marks .-100)
INSTRUCTIONS
Candidates should attempt questions no. 1 and 5 which are compulsory. and any THREE ofthe remaining questions selecting at least ONE question from each Sec/ion.
Al/ questions carry equal marks.
Marks carried by parts ofa question are indicated against each.
Answers must be written in ENGLISH
only.
SECTION-A
1. Answer all the following (each in about 75 words) 8x5=40
Why do forest plantations fail? Cite relevant exampJes.
Briefly discuss a silvicultural system in which equal or equiproductive areas of mature crops are successfully felled.

What are the different types of containers used in raising forest nurseries? List their advantages and disadvantages.
Give the zonation ofland-sea interface in a typical mangrove eco-system with its characteristics.
Explain the role of growth regulators in rooting
of cuttings. "Tropical regions are rich in floral biodiversity as compared to temperate regions." Do you agree
Briefly discuss low temperature injuries in forest trees.
Acacia Catechu and Prosopis juliflora have emerged as important species for marginal lands. Discuss briefly.
2. Briefly describe the merits and demerits of 'high density short rotation' forestry. Enlist suitable species in this regard along with their productivity potential. 10
What do· you understand by the term locality factors How these affect the decision of plantations undertaken by the silviculturist? 1o
Why is LA! important in deciding the productivity of forest trees? Explain the concept of optimum LAI and how it varies with type of forest and
climate.10
Successful regeneration in a forest .stand depends upon judicious choice of a silvicultural system. Comment. 10
Differentiate between thefollowing: 5x4=20
Shelter belts and wind breaks
Photosynthetic efficiency and nutrient use efficiency
Site quality and site index
Net primary production and yield
Gregarious flowering and sporadic flowering

Indian-Sandalwood (Santalum album) is the most -valuable wood in India. However, silvicultural production of this is not satisfactory." the above in relation to the phenology of Santalum album and the forest laws governing its cultivation and trade. 20
4. Comment on following statements: 4x5=20
stand of forests result incomplete utilization of the site.'

(ii)Mangrove ecosystems have physiologically dry soil.'

(iii)Planted forestry has high production potential but low conservation value.'
(iv)"Conversion" is an accepted silvicultural system.'
Give climatic requirement, rotation age, spacing, tending operations and yield ofthe following forest speCies:

Populus deltoides

Casuarina equisetifolia. 10

Distinguish 'tending operations' and cultural operations' in forestry.
SECTION-B
5. Write short notes on all the following (each answer to be in about 75 words):8x5=40
(a)Management of urban forestry

(b)Canopy architecture

(c)Diagnosis and design in agroforestry

(d)Lopping management

Radiation absorption and energy balance in forests

Seed coating and pelletting

Strategies for conventional tree improvement programme

cycling in natural forests.


6. Discuss the following: 4x5=20
Selection as a method of tree improvement

Selection intensity affects the genetic gain

(iii)Rio conference
(iv)Drawbacks of social forestry programmes in India.
How can we make use of the traditional knowledge of the major tribes of India in forest conservation (both flora and fauna) 10

What is integrated land use management? Give a plan of integrated land use management for 10 ha. of land in tropics and sub-tropics parts of India. 10
7. What do you understand by the term 'hot spot' in relation to floral biodiversity? Explain methods of ex-situ and in-situ conservation. 10

"Among the causes ofsoil erosions some are manageable.n Comment.

Comment on the Need of Research in agroforestry in India. 2x5=10

Write on Tree species for smoke and dust pollution control.

(ii)Differentiate between erodability and erosivity. 2x5=10

What are saline and sodic soils?
Mention ten species (scientific name) oftrees tolerant to salinity. 2x5=10
What do you understand by the term "provenance trial" Explain the stepwise procedure for this trial followed in a forest species. 10
(b)Discuss the possibilities of biotechnoiogical
interventions in tree improvement programmes.10
(c)How can NGOs, schools, banks and industry help to carry out an afforestation programme? 20
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