(Download) UPSC IAS Mains Optional Agriculture (Paper -1 & Paper -2) Exam Paper - 2016
Exam Name: UPSC IAS Mains
Exam Date: 9-12-2016
File Type: PDF
Q1. Describe the following in not more than 150 words each: 10x5=50 marks
(a) Agroforestry and Agrostology 10 marks
(b) Integrated Pest Management (IPM) vs Integrated Management (INM) 10 marks
(c) Farming system vs Mixed farming 10 marks
(d) Decoy crop vs Trap crop 10 marks
(e) Fertigation vs Herbigation 10 marks
Q2.(a) List out the criteria for essentiality of nutrients. Differentiate between essential, beneficial and functional elements in plant nutrition. How are these nutrient elements absorbed by the plants ? 20 marks
(b) Differentiate between soil fertility and soil productivity. What is meant by the organic matter content of good agricultural soil ? Compare it with that of forest soil. Suggest ways to maintain soil organic matter content and improve crop productivity. 20 marks
(c) What do you mean by the terms remote sensing and GIS ? What are their applications in agriculture and forestry? 10 marks
Q3.(a) Write a brief note on the importance of pulses for sustainable future. Describe the international pulse year with its main objectives and strategies to enhance the production and availability of pulses. 20 marks
(b) Describe the package of practices for raising a short duration pigeon pea. Discuss good agricultural practices (GAP) and their implications. 20 marks
(c) Explain the critical period of crop-weed competition with suitable examples. 10 marks
Q4.(a) Discuss the global initiatives and international conventions on climate change. What does NICRA stand for? What are the initiatives taken by the Indian Government in this regard ? 20 marks
(b) Briefly describe the various types of furexly plantations like social forestry, agroforestry and natural forests. What methods are employed for propagation of forest plants ? 20 marks
(c) List out the factors affecting efficacy of herbicides. 10 marks
Q5. Describe the following in not more than 150 words each: 10x5=50 marks
(a) Protected agriculture 10 marks
(b) Phytostabilisation 10 marks
(c) Role of Krishi Vigyan Kendras 10 marks
(d) Farm planning and Farm management 10 marks
(e) Kisan Credit Card 10 marks
Q6.(a) Differentiate between rainfed and irrigated agriculture. List out the major problems of rainfed agriculture. Describe the various soil moisture conservation measures to boost crop production in rainfed farming. 20 marks
(b) Discuss the various methods of evaluation of extension programmes. Discuss the significance of Self-Help Groups for rural development, with successful examples. 20 marks
(c) Describe the concept of market intelligence and explain the various problems in agricultural marketing system in India. 10 marks
Q7.(a) Define agricultural extension. Differentiate between extension education and formal education. Discuss its importance in agricultural development. 20 marks
(b) Explain various soil conservation methods and integrated watershed management approach. What is soil erosion ? Discuss the methods of managing soil erosion. 20 marks
(d) What are the important principles of farm management ? 10 marks
Q8.(a) Discuss the mechanism of fixation of minimum support prices of agricultural products. 10 marks
(b) Discuss the significance of quality of irrigation water and rain-water harvesting for crop productivity. Describe how irrigation is scheduled in the critical stage of crop growth. 20 marks
(c) Explain how industrial effluents affect soil and water pollution. What measures can be taken to reduce this impact ? 20 marks
1. Answer the following questions in about 150 words each : 10x5=50 marks
(a) Elaborate Mendel's law of independent assortment' by giving suitable example.
(b) Define "pure lines' along with their characteristics. How are they used in crop improvement?
(c) Explain Intcllcctual Property Rights. Give the present status of IPR in relation to agriculture.
(d) Explain the mechanism of absorption of salts. Give potassium, calcium and iron deficiency symptoms in plants.
(e) Discuss sterility systems used in hybrid seed production. Briefly mention chemically induced male sterility.
2. Answer the following questions : 12.5 x4=50 marks
(a) Define 'gencral combining ability'. Explain the genetic basis and methods for estimating SCA in diallel mating system.
(b) What are the genetic consequences of self- and cross-pollination?
(c) Discuss the sui generis protection of traditional knowledge.
(e) How is water absorbed by land plants? Explain varlous external conditions affecting water absorption by roots.
3. Answer the following questions : 12.5 x4=50 marks
(a) Explain oxidative decarboxylation citing suitable example.
(b) Give evidences supporting translocation of organic solutes in phloem. Explain Ringing experiment.
(c) Given the seed from a male sterile line of corn, how would you determine if the sterility is genetic or cytoplasmic?
(d) Discuss the importance of gene pyramiding and gene introgression in developing disease-resistant cultivars.
4. Answer the following questions : 12.5x4=50 marks
(a) Discuss the practical applications of mutations in wheat, rice and barley. Name two varieties of wheat released by the use of induced mutations in India.
(b) Give an account of mechanism of protein synthesis. Compare it with prokaryotes and eukaryotes.
(c) Explain formal and informal seed supply systems in India.
(d) Differentiate between transpiration and guttation. Why permanent wilting takes place?
5. Answer the following questions in about 150 words each : 10x5=50 marks
(a) What are the important new varieties of carnation? Explain the importance of pinching operation for producing quality carnation.
(b) Explain the connection between anaerobic and aerobic respiration.
(c) Compare the inoculative and augmentative releases of natural enemies for biological control of pests.
(d) Discuss the strength and weakness of public distribution system in the country.
(e) Describe the procedure of tissue culture for multiplying new cultivars of gladiolus
6.Answer the following questions : 12.5 x4=50 marks
(a) What are the special schemes for providing food grains to underprivileged, destitutes and malnourished populations?
(b) Explain the production technology for commercial cultivation of marigold and aster flowers. (c) Why are the concepts of economic threshold and economic injury levels important in IPM? (d) Explain the phenomenon of passive absorption and give the factors affecting the rate of absorption of water.
7. Answer the following questions : 12.5 x4=50 marks
(a) How does maturity control the post-harvest quality and storage life of fruits? Give maturity indices for some fruits and vegetables. ‘
(b) Explain the present status of food and nutrition security in India.
(c) Discuss plant disease occurrence, epidemics and IDM.
(d) Explain the effect of concentration of enzyme on its activity. Give different methods for regulating the enzymic activity.
8. Write notes on the following: 12.5 x4=50 marks
(a) Horizontal and vertical resistance
(b) Ionizing radiations and insect control
(c) Vascular wilt and xylemn wilt
(d) Red flour beetle and Angoumois grain moth