civils mains 2013

AGRICULTURE Paper I

Question Paper Specific Instructions

Please read eaeh of the following instructions carefully before attempting questions:

There are EIGHT questions divided in two SECTIONS and printed both in HINDI and in ENGLISH.

Candidate has to attempt FIVE questions in all.

Questions no. 1 and 5 are compulsory and out of the remaining, THREE are to be attempted choosing at least ONE from each section.

The number of marks carried by a question part is indicated against it.

Answers must be written in the medium authorized in the Admission Certificate which must be stated clearly on the cover of this Question-cum-Answer Booklet in the space provided. No marks will be given for answers written in a medium other than the authorized one.

Word limit in questions, wherever specified, should be adhered to.

Attempts of questions shall be counted in chronological order. Unless struck off, attempt of a question shall be counted even if attempted partly. Any page or portion ofthe page left blank in the answer book must be clearly struck off.



SECTION A

Ql. Answer the following in about 150 words each: 10x5=50

What are the advantages of integrated farming system Discuss about resource recycling in different integrated farming systems in India.

Discuss the climatic parameters in relation to agro-ecosystem. What are the major threats to agro-ecosystem

What is remote sensing? How can we use it in agriculture?
Why is evaluation an essential part of any extension programme? State its advantages in brief. 10
Discuss briefly the challenges in agricultural marketing system. State the advantages of supply chain management.


Q2. Answer the following in about 200 words each: 10x5=50

Enumerate the factors influencing soil erOSIOn. Classify and discuss briefly various types of erosion.

Discuss the factors affecting crop-weed competition. What do you mean by critical period of crop-weed competition?

What are the scientific irrigation scheduling criteria? What is critical stage approach for scheduling irrigation?

What are the uses of farm planning and budgeting? Discuss the steps to be followed in farm planning and budgeting.

Suggest measures which can help to meet major challenges in agriculture and food security for stabilizing crop yields.


Q3. Differentiate and elaborate the following in about 150 words each: 10x5=50

Photoperiodism and Thermoperiodism

Gravitational water and Hydroscopic water

Relative and Obnoxious weeds

Inorganic fertilizers and Bio-fertilizers

Group discussion and Buzz session


Q4. Answer the following in about 250 words each: 20+15+15==50

What are the impacts of climatic change in agriculture How can the impacts be mitigated in crop environment? 20

Write about the factors of development of herbicide resistance in weeds. What are the management options? 15

What are the causes of soil degradation and pollution? What measures may be adopted to control soil pollution? 15


SECTION B

Q5. Write short notes on any five of the following in about 150 words each: 1Ox5=50

Protected agriculture 10

Green house effect and global warming 10

Participatory rural appraisal 10

Quality of irrigation water 10

Social forestry 10

Ley farming 10


Q6.Explain the following in about 150 words each:

Watershed management

Mode of herbicidal action

Principle oflimited capital and opportunity cost

Crop diversification

Intercropping


Q7.Answer the following in about 400 words each: 25x2=50

Define sustainable agriculture. What are the criteria of sustainability in agricultural system? What are the various approaches to achieve sustainability? 5+10+10
Discuss the nitrogen losses from water-logged soil. What are the various practices to increase nitrogen use efficiency in submerged rice? 10+15


Q8.Explain the following in about 200 words each:

Persistence of weeds

Factors affecting soil structure

Broad-based extension

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