Agronomy Objective Type Questions and Answers with PDF Download

A comprehensive and updated question bank of multiple choice objective practice questions and answers on Agronomy Agriculture for Competitive Exams like General Agriculture for ICAR and other JRF, SRF, ARS, Ph.D., M.Sc., IBPS, AFO, AO, IFS, NABARD and Tests.

1. Blind tillage refers to–
(A) Summer ploughing (B) Hoeing in standing crop rows
(C) Primary tillage (D) Hoeing before germination✓

2. The normal form of plant is maintained by–
(A) Water✓ (B) Gases
(C) Solids (D) None

3. Process of loosening for separating fibres from plant is known as–
(A) Curing (B) Retting✓
(C) Wetting (D) Netting

4. True density of most mineral soils is usually–
(A) 1.35 g/cm3 (B) 1.65 g/cm3
(C) 2.65 g/ cm3✓ (D) 3.5 g/ cm3

5. Nitrogen fixation in soil by Rhizobium is increased by–
(A) P✓ (B) Ca
(C) Mg (D) K

6. Dropsy disease in human beings is caused by which weed?
(A) Pluchea lanceolata (B) Argemone mexicana✓
(C) Digera arvensis (D) Convolvulus arvensis

7. Which country is the place of origin of sunflower?
(A) Southern United State and Mexico✓ (B) Spain
(C) Soviet Union (D) Argentina

8. How many agrodimatic zones are categorized in India ?
(A) 20 (B) 18
(C) 14 (D) 15✓

9. Finger leaf disease in cotton is caused due to residual effect of which chemical?
(A) Chlorophyriphos (B) Mancozeb
(C) 2,4- 0✓ (D) N. A. A.

10. The panicle initiation stage in rice plants comes–
(A) Immediate after transplanting (B) After maximum tillering stage✓
(C) After boot leaf stage (D) At any time after transplanting

11. The first GM potato developed at CPR I for increasing protein content in tubers consist of genes from–
(A) Chickpea (B) Pigeonpea
(C) Field pea (D) Grain amaranthus✓

12. Cultivation of durum wheat is primarily confined to–
(A) Central India (B) Southern India
(C) Central and Southern India✓ (D) UP hills

13. Normally C : N : S ratio of soil is–
(A) 100: 20 : 1 (B) 100: 10 : 1✓
(C) 200: 10 : 1 (D) 100 : 10 : 2

14. Which one is the recommended optimum plant population for maize ?
(A) 50,000 plants (B) 66,000 plants✓
(C) 80,000 plants (D) 90,000 plants

15. Which one of the following is non selective herbicide ?
(A) Alachlor (B) Butachlor
(C) Paraquat✓ (D) Atrazine

16. Long term persistent herbicide is–
(A) Pendimethalin (B) 2,4 – 0✓
(C) Paraquat (D) Glyphosate

17. Which gas is released from paddy fields?
(A) CH4✓ (B) H2S
(C) CO (D) NH3

18. CO2 content in soil air is–
(A) 0.03% (B) 0.003%
(C) 0.25%✓ (D) 0.50%

19. Opaque-2 maize composites are richer as compared to normal maize in–
(A) Tryptophan (B) Lysine✓
(C) Tryptophan & Lysine (D) Protein

20. Flint corn is commonly grown in India is also known as–
(A) Zea mays indentata (B) Zea mays indurata✓
(C) Zea mays everta (D) Zea mays saccharata

21. The most suitable temperature for maize growth is–
(A) 21°C (B) 26°C
(C) 29°C (D) 32°C✓

22. Most common herbicide used in maize is–
(A) Atrazine (B) Alachlor
(C) Simazine✓  (D) Metribuzin

23. Which cereal is non tillering in nature?
(A) Maize✓ (B) Wheat
(C) Barley (D) Paddy

24. Who introduced the technique of production of. double cross hybrid maize?
(A) EM East (B) DF Jones✓
(C) GH Shull (D) Mendel

25. Jowar is primarily a native of being obtained by using a seed rate of (kg)
(A) India (B) Africa ha✓
(C) Europe (D) Central Asia

26. Soil sickness is caused by–
(A) Maize (B) Jowar
(C) Linseed (D) Both (B) and (C)✓

27. Required plant population of jowar may be obtained by using a seed rate of (kg/ha)
(A) Lentil (B) Pea✓
(C) Gram (D) Safflower

28. Fertilization application in maize should be completed before–
(A) Tasseling✓ (B) Silking
(C) Ripening (D) Knee high stage

29. The fat content in bajra is around–
(A) 2% (B) 3%
(C) 4% (D) 5%✓

30. HB-1 hybrid of bajra released in 1965 evolved from a cross–
(A) Tift-23-A x BIL-3B✓ (B) Tift-23-A x J -88
(C) Tift-23-A x J-I04 (D) None of these

31. Seed rate for transplanting of bajra is
(A) 1 kg (B) 2 kg✓
(C) 3 kg (D) 4 kg

32. The optimum seed rate for normal sown crop of lentil is (kg/ha)–
(A) 20-25 (B) 25-30
(C) 30-40✓ (D) 40-45

33. Arkel, Early Badger, Bonneville and Early December are the improved varieties of–
(A) Lentil (B) Pea✓
(C) Gram (D) Safflower

34. Which one of the following varieties of pigeonpea is an extra early maturing ?
(A) Pusa Ageti (B) UPAS-120
(C) Mukta (D) Prabhat✓

35. When mung beans are allowed to sprout, which vitamin is synthesized ?
(A) Vit. A (B) Vit. B✓
(C) Vit. C (D) Vit. D

36. Which one of the following pulse crops is used as a pulse, a fodder and a green man ure crop ?
(A) Moong (B) Urd
(C) Cowpea✓ (D) Pea

37. Pusa Phalguni, Pusa Barsati, Pusa Rituraj and Pusa Dofasli are the improved varieties of–
(A) Moong (B) Urd
(C) Pea (D) Cowpea✓

38. Soybean is introduced in India from USA in–
(A) 1901 (B) 1947
(C) 1960✓ (D) 1969

39. Optimum seed rate of soybean is (kg/ha)–
(A) 50 – 60 (B) 70 – 80✓
(C) 80 – 90 (D) 100 – 110

40. The chromosome number of Sesantum indicunt (Sesamum) is–
(A) 14 (B) 18
(C) 22 (D) 26✓

41. The per cent protein in linseed is–
(A) 26 (B) 36✓
(C) 40 (D) 44

42. Seed ball is a fruit of–
(A) Safflower (B) Sunflower
(C) Linseed✓ (D) Sugarbeet

43. The oil content in the cotton seed ranges from–
(A) 10-15% (B) 15- 25%✓
(C) 25 – 35% (D) 40- 42%

44. Sea island cotton belong to–
(A) Gossijpium arboreunt (B) Gossypium herbaceum
(C) Gossypium hirsutum (D) Gossupium barbadense✓

45. Varalaxmi is a interspecific variety of cotton evolved at–
(A) Udaipur (B) Nagpur
(C) Dharwad✓ (D) Surat

46. The ideal stage of harvest of jute for fibre purpose is–
(A) One month old (B) Flowering
(C) Small pod stage✓ (D) Mature pod stage

47. Retting temperature for jute is–
(A) 14°C (B) 26 °C
(C) 28 °C (D) 34 °C✓

48. Lucerne (Medicago sativa) is a native of 399.
(A) Persia✓ (B) India
(C) Iraq (D) Afghanistan

49. Rambler, NDRI Selection No. 1 and Moopa are the varieties of–
(A) Oat (B) Berseem
(C) Lucerne✓ (D) Guar

50. Which variety of mungbean is suitable for cultivation both during rainy and summer seasons ?
(A) Type-l (B) Type-44✓
(C) K-851 (D) Varsha

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