Agronomy MCQs For Agriculture Supervisor Exam

1. Which method of rice cultivation is known to increase water use efficiency while enhancing yield?

• a) System of Rice Intensification (SRI)
• b) Broadcast sowing
• c) Transplanting at 30 days
• d) Direct wet seeding

2. Which micronutrient deficiency in wheat is characterized by interveinal chlorosis of younger leaves?

• a) Zinc
• b) Iron
• c) Boron
• d) Manganese

3. In maize, which planting geometry is most suitable for maximizing light interception and minimizing weed growth?

• a) Random broadcasting
• b) Row planting with 60 cm x 20 cm spacing
• c) Line sowing without thinning
• d) Wide bed planting

4. Which practice is a component of integrated nutrient management (INM)?

• a) Exclusive use of chemical fertilizers
• b) Combined use of organic manures, biofertilizers, and chemical fertilizers
• c) Flood irrigation only
• d) Mulching with polyethylene sheets

5. Which weed in rice is commonly referred to as “false daisy”?

• a) Cyperus rotundus
• b) Eclipta prostrata
• c) Echinochloa crus-galli
• d) Ludwigia parviflora

6. Which soil type is best suited for sugarcane cultivation in India?

• a) Sandy loam
• b) Black clayey soil
• c) Laterite soil
• d) Saline soil

7. Which biofertilizer is commonly used for nitrogen fixation in legume crops?

• a) Azospirillum
• b) Rhizobium
• c) Phosphate solubilizing bacteria (PSB)
• d) Azotobacter

8. Which of the following is an example of a long-duration wheat variety in India?

• a) HD 2967
• b) PBW 343
• c) UP 262
• d) Raj 3765

9. Which irrigation method is most suitable for water-sensitive horticultural crops like tomato and capsicum?

• a) Flood irrigation
• b) Sprinkler irrigation
• c) Drip irrigation
• d) Basin irrigation

10. Which practice helps in reducing nitrate leaching in high rainfall areas?

• a) Applying nitrogen in a single dose at sowing
• b) Split application of nitrogen fertilizer
• c) Using urea without inhibitors
• d) Flood irrigation immediately after fertilization

11. Which legume crop is commonly used as a green manure to improve soil fertility before rice cultivation?

• a) Sunn hemp (Crotalaria juncea)
• b) Chickpea (Cicer arietinum)
• c) Black gram (Vigna mungo)
• d) Cowpea (Vigna unguiculata)

12. Which physiological stage of wheat is most sensitive to drought stress?

• a) Tillering
• b) Flowering (Anthesis)
• c) Germination
• d) Grain filling

13. Which herbicide is commonly used for controlling broad-leaved weeds in wheat?

• a) 2,4-D
• b) Atrazine
• c) Pendimethalin
• d) Glyphosate

14. Which irrigation schedule is recommended for maize grown on loamy soil under normal rainfall?

• a) Once at sowing only
• b) Irrigate at 20–25 days interval depending on soil moisture
• c) Daily irrigation for the first month
• d) Irrigation only at tasseling

15. Which is the most suitable fertilizer source to correct zinc deficiency in rice?

• a) Zinc sulfate (ZnSO₄·7H₂O)
• b) Borax
• c) Super phosphate
• d) Muriate of potash

16. Which of the following practices reduces soil erosion in hilly areas?

• a) Contour farming
• b) Flat bed planting
• c) Broadcasting seeds
• d) Mulching with plastic sheets only

17. Which cropping system is practiced to achieve nitrogen fixation while reducing pest incidence?

• a) Monocropping
• b) Legume-cereal intercropping
• c) Relay cropping of two cereals
• d) Mixed cropping of oilseeds only

18. Which of the following is a short-duration pigeon pea variety suitable for intercropping?

• a) ICP 8863
• b) UPAS 120
• c) Pusa 991
• d) T-21

19. Which climate parameter is most critical during the flowering stage of chickpea?

• a) Soil pH
• b) Minimum temperature
• c) Rainfall only
• d) Wind speed

20. Which organic amendment is rich in phosphorus and often used in integrated nutrient management for crops?

• a) Neem cake
• b) Bone meal
• c) Farmyard manure
• d) Green leaf manure

21. Which of the following crops benefits the most from zinc application in zinc-deficient soils?

• a) Rice
• b) Wheat
• c) Sugarcane
• d) Maize

22. Which of the following is a major pest of groundnut that feeds on leaves and causes defoliation?

• a) Spodoptera litura (armyworm)
• b) Aphis craccivora (aphid)
• c) Helicoverpa armigera (pod borer)
• d) Whitefly (Bemisia tabaci)

23. Which cropping system is best suited for maximizing nitrogen fixation in rainfed areas?

• a) Maize monocrop
• b) Legume-cereal intercropping
• c) Rice-wheat rotation
• d) Oilseed monocropping

24. Which of the following is a short-duration rice variety suitable for rainfed lowland areas?

• a) IR 64
• b) MTU 1010
• c) Swarna
• d) Jaya

25. Which cultural practice is most effective in reducing nematode infestation in vegetables?

• a) Crop rotation with non-host crops
• b) Deep plowing after harvest
• c) Mulching with organic residues
• d) Flood irrigation only

26. Which fertilizer is recommended to correct boron deficiency in oilseed crops?

• a) Borax (Sodium tetraborate)
• b) Zinc sulfate
• c) Single super phosphate
• d) Urea

27. Which of the following irrigation methods minimizes water loss through evaporation in orchards?

• a) Flood irrigation
• b) Sprinkler irrigation
• c) Drip irrigation
• d) Basin irrigation

28. Which green manure crop is highly recommended for alkaline soils to improve organic matter and nitrogen?

• a) Dhaincha (Sesbania aculeata)
• b) Sunhemp (Crotalaria juncea)
• c) Cowpea (Vigna unguiculata)
• d) Berseem (Trifolium alexandrinum)

29. Which physiological process in plants is directly enhanced by phosphorus application?

• a) Photosynthesis
• b) Root development and energy transfer
• c) Leaf expansion
• d) Flower pigmentation

30. Which of the following is a drought-tolerant variety of sorghum suitable for semi-arid regions?

• a) CSV 15
• b) M35-1
• c) SPV 1411
• d) Phule Anuradha

31. Which of the following is an advantage of intercropping legumes with cereals?

• a) Reduces nitrogen fixation
• b) Improves soil fertility and reduces pest incidence
• c) Depletes soil organic matter
• d) Increases water consumption excessively

32. Which of the following organic amendments is rich in calcium and often used to improve acidic soils?

• a) Gypsum
• b) Bone meal
• c) Neem cake
• d) Farmyard manure

33. Which of the following cereals is highly sensitive to waterlogging during its early growth stage?

• a) Maize
• b) Rice
• c) Wheat
• d) Barley

34. Which of the following is the main objective of conservation tillage?

• a) Reduce soil erosion and conserve moisture
• b) Increase soil compaction
• c) Remove all crop residues
• d) Increase nutrient leaching

35. Which of the following crops is considered a C4 plant, efficient in photosynthesis under high light and temperature?

• a) Wheat
• b) Maize
• c) Barley
• d) Rice

36. Which of the following soil amendments can help reclaim saline-alkaline soils?

• a) Sulfur
• b) Gypsum
• c) Lime
• d) Urea

37. Which of the following is considered a drought-tolerant pulse crop suitable for semi-arid regions?

• a) Pigeon pea (Cajanus cajan)
• b) Green gram (Vigna radiata)
• c) Chickpea (Cicer arietinum)
• d) Lentil (Lens culinaris)

38. Which of the following is the main advantage of crop residue mulching in field crops?

• a) Enhances soil moisture retention and reduces erosion
• b) Promotes rapid nitrogen leaching
• c) Increases soil compaction
• d) Reduces soil organic matter

39. Which of the following is the most suitable nitrogen fertilizer for flooded rice fields?

• a) Urea
• b) Ammonium sulfate
• c) Calcium nitrate
• d) Potassium nitrate

40. Which integrated practice helps control both weeds and soil erosion in upland rice?

• a) Manual weeding only
• b) Contour bunding with mulching
• c) Flood irrigation
• d) Broadcasting herbicide only

41. Which of the following crops is most sensitive to boron deficiency, showing hollow stems or tip burn?

• a) Cauliflower
• b) Maize
• c) Wheat
• d) Rice

42. Which cropping system is widely practiced in Punjab to maximize wheat and rice productivity?

• a) Rice-rice rotation
• b) Rice-wheat rotation
• c) Maize-wheat rotation
• d) Sugarcane-rice rotation

43. Which of the following modern agronomic techniques reduces water usage and increases yield in rice?

• a) System of Rice Intensification (SRI)
• b) Flooded transplanting
• c) Broadcasting seedlings
• d) Direct wet seeding

44. Which of the following practices is recommended to prevent phosphorus fixation in acidic soils?

• a) Band placement of phosphorus fertilizer with lime
• b) Flood irrigation only
• c) Broadcasting urea
• d) No fertilizer application

45. Which of the following is a characteristic feature of deep-rooted crops that enhances drought tolerance?

• a) High leaf area index
• b) Extensive root system reaching deeper soil layers
• c) High nitrogen uptake only
• d) Shallow roots with dense canopy

46. Which of the following micronutrients is highly mobile in plants and shows deficiency symptoms first in older leaves?

• a) Boron
• b) Nitrogen
• c) Zinc
• d) Manganese

47. Which of the following rice varieties is highly tolerant to submergence in flood-prone areas?

• a) Swarna
• b) FR13A
• c) IR 64
• d) MTU 1010

48. Which of the following practices is effective in improving nitrogen use efficiency in cereals?

• a) Applying full N dose at sowing
• b) Split application of nitrogen at critical growth stages
• c) No irrigation
• d) Deep plowing after harvest

49. Which of the following crops is recommended for crop rotation to break pest and disease cycles in sugarcane fields?

• a) Potato
• b) Legumes like mung bean or cowpea
• c) Rice only
• d) Maize only

50. Which of the following sustainable practices enhances soil organic carbon and improves crop productivity simultaneously?

• a) Residue retention and green manure incorporation
• b) Excessive tillage
• c) Monocropping without manure
• d) Flood irrigation only