UPSC Agriculture PYQs 2018 | Vaidra

1Medium20 marks

What do you mean by hybrid seed production ? Describe the different types of sterility systems to facilitate hybrid seed production.

2Medium50 marks

(a) Define auxins and explain their role in crop life cycles. Also, discuss the uses of auxins in agriculture. 20 marks

(b) Discuss the effects of water stress on plant growth and development. Describe plant borne mechanisms to escape from drought and stress situation. 15 marks

(c) What do you understand by seed dormancy? Discuss the reasons for seed dormancy. Also, describe the various methods for breaking seed dormancy. 15 marks

3Medium50 marks

Answer the following questions in about 150 words each:

(a) What are the different methods of diagnosis of mineral nutrient deficiency? Describe the role and deficiency symptoms of zinc in rice and sulphur in oilseed crops. 10 marks

(b) Explain C3, C4 and CAM mechanism in plants and their importance in changing climatic conditions. 10 marks

(d) Describe symptoms and management of leaf curl and mosaic diseases in tomato. 10 marks

(e) Give a brief account of food security in India before and after the green revolution. Suggest sustainable solutions to strengthen food security in the country. 10 marks

Agriculture UPSC PYQ 2018

71 more Agriculture 2018 questions await