Agronomy Test Questions and Answers MCQ for Competitive Exams

Most important Agronomy Test Questions are useful for General Agriculture for ICAR and other JRF, SRF, ARS, Ph.D., M.Sc., IBPS, AFO, AO, IFS, NABARD Agri Competitive exams and Tests.

1. Which one of the following fertilizers contain water soluble P–
(C) MAP (D) both (A) and (C)✓

2. In tobacco, the basic aim of topping and desuckering is to–
(A) Reduce the plant height
(B) Encourage branching
(C) Divert energy and nutrients from flower heads to leaves✓
(D) Protect the plants against lodging

3. Crop logging is used in–
(A) Sugarcane✓ (B) Sugarbeet
(C) Maize (D) Tea

4. The neutron scattering method is not useful in estimating the moisture in–
(A) Acidic soils (B) Alluvial soils
(C) Lateritic soils (D) Organic soils✓

5. In furrow method of irrigation–
(A) Only 1/4th of the furrow is wetted (B) Only 4/5th of the furrow is wetted
(C) Only 1/2 of the furrow is wetted (D) Only 3/4th of the furrow is wetted✓

6. Yield advantage in an intercropping system occurs due to the development of–
(A) Temporal complementarity (B) Spatial complementarity
(C) Both (A) and (B)✓ (D) Competitive relationship

7. I A’ value concept was given by–
(A) Sorenson (B) Beckett
(C) Schofield (D) Fried and Dean✓

8. Brassica juncea has been evolved after hybridization between–
(A) B. nigra and B. campestris✓ (B) B. nigra and B. oleracea
(C) B. campestris and B. oleracea (D) B. campestris and B. carinata

9. Dolomite is–
(A) CaC03 (B) MgSO4
(C) Ca(OH)(D) MgC03CaC03

10. Salts in the xylem ducts of the root are carried upward with–
(A) Photosynthesis (B) Transpiration stream✓
(C) Respiration (D) Guttation

11. The organic residues with wider C N ratios as compared to narrow C N ratios are decomposed at–
(A) Faster rate (B) Slow rate✓
(C) Equal rate (D) Faster rate followed by slow rate

12. At what pH value, phosphate availability is the highest in the soil ?
(A) 5.5 (B) 6.5✓
(C) 7.5 (D) 8.5

13. Bunchy top in sugarcane is caused by–
(A) Root borer (B) Stock borer
(C) Internode borer (D) Top shoot borer✓

14. Bacterial diseases are controlled by use of chemicals–
(A) Antibiotics✓ (B) Viricides
(C) Fungicides (D) Kelthane

15. The downward movement of surface soil water is known as–
(A) Infiltration (B) Percolation✓
(C) Leaching (D) Wash out

16. The herbicides containing carbon and hydrogen in their molecule are called–
(A) Arsenic (B) Acid
(C) Organic herbicide (D) Salt

17. Sorghum crop is considered as camel crop because of–
(A) Deep root system (B) Resistant to drought✓
(C) Shallow root system (D) Nutrient exhaustiveness

18. How much seed of legume crop should be treated with one packet of Rhizobium culture?
(A) 5 kg (B) 10 kg✓
(C) 15 kg (D) 20 kg

19. Which nitrogen transformation process is responsible for causing a decrease in nitrate – N under anaerobic condition?
(A) Mineralization (B) Nitrification
(C) Denitrification✓ (D) Immobilization

20. The huskless variety of barley is–
(A) Manjula (B) KK 141
(C) Dolma✓  (D) RS 6

21. Which of the following micronutrients is especially tightly held by organic matter that its availability to crop plants can be very low in organic soils ?
(A) Zinc (B) Iron
(C) Copper✓ (D) Manganese

22. A short duration crop in between two main seasonal crops is termed as–
(A) Cash crop (B) Inlercrop
(C) Companion crop (D) Catch crop✓

23. ‘Awarodhi’ variety of gram is resistant to–
(A) Wilt✓ (B) Blight
(r) Flooding (D) Drought

24. In which crop, the use of BGA as a biofertilizer, will be most useful ?
(A) Maize (B) Potato
(C) Rice✓ (D) Sugarcane

25. Among the following four common constituents of organic manures, the slowest rate of decomposition is seen with which of the following?
(A) Cellulose (B) Sugar
(C) Lignin✓ (D) Hemicellulose

26. The optimum plant population per hectare of sorghum is–
(D) 50,000 plants (B) 1,00, 000 plants
(C) 1,50,000 plants✓ (D) 2,00,000 plants

27. The crop grown in U.P. during all the three seasons is–
(A) Urd (B) Sorghum
(C) Moong (D) Maize✓

28. Average rainfall of the country is–
(A) 590 mm (B) 1190 mm✓
(C) 1290 mm (D) 1490 mm

29. Interculture in groundnut is avoided at–
(A) Flowering stage (B) Seedling stage
(C) Pegging stage✓ (D) None of these

30. The study of the relationship of agriculture crops and environment is called–
(A) Agro-ecology✓ (B) Agro – climatology
(C) Agro – meteorology (D) Auto.- ecology

31. For application of phosphorus at the rate of 50 kg P 205 ha -1 to cotton crop, the quantity in kg of single super phosphate (P 205 = 16%.) required for Ph acres is–
(A) 80 (B) 108
(C) 188✓ (D) 216

32. Application of gypsum is required more for–
(A) Paddy (B) Berseem
(C) Lucerne (D) Groundnut✓

33. For which nutrient element, plants depend strongly on chelation to improve availability and transport from soil to plant root surfaces ?
(A) Ca (B) Mg
(C) Fe✓ (D) B

34. Which of the clay minerals are found most in agriculture soils ?
(A) Cyclosilicates (B) Phyllosilicates✓
(r) Sorosilicates (D) Nesosilicates

35. Developed plant variety canola belong?
(A) Papilionaceae (B) Caesalpinaceae
(C) Compositae (D) Cruciferae✓

36. Arrowing is known as–
(A) Tillering of sugarcane (B) Emergence of inflorescence in sugarcane✓
(C) Arrow like shape of sugarcane
(D) None of these

37. Which soil has the highest cation exchange capacity ?
(A) Loam (B) Loamy sand
(C) Sandy loam (D) Clay loam✓

38. Antisenescent polyhormone is represented by–
(A) Auxins (B) Cytokinins
(C) Gibberellin✓ (D) Ethylene

39. Which of the following plants does not show photorespiration ?
(A) Pea (B) Wheat
(C) Rice (D) Maize✓

40. The recently developed terminator technology has been used in
(A) Rice (B) Cotton✓
(C) Tobacco (D) Wheat

41. High organic matter content in the soil reduces the availability of which one of the following to the plants ?
(A) Copper✓ (B) Iron
(C) Boron (D) Molybdenum

42. Which form of nitrogen is absorbed by paddy under waterlogged conditions ?
(A) N2 (B) NH4 ion✓
(C) NOz ion (D) Nitrate ion

43. Soils of which soil order have no diagnostic horizon ?
(A) Mollisols (B) Entisols✓
C) Andisols (D) Aridisols

44. Excess uptake of which element is known as luxury consumption ?
(A) N (B) P
(C) K✓ (D) Zn

45. Texture of the soil can be changed by–
(A) Use of fertilizer (B) Use of manures
(C) Use of tillage practices (D) None of these✓

46. The slow growing species of legume root nodule bacteria are included in bacterial genus–
(A) Rhizobium (B) Brady rhizobium✓
(C) Sino-rhizobium (D) Azo-rhizobium

47. LEISA is related to–
(A) Organic farming✓ (B) Inorganic farming
(C) Natural farming (D) All of these

48. For calculating multiplied by value of P, P2O5 is multiplied by–
(A) 3.258 (B) 2.146
(C) 0.437✓ (D) 2.29

49. Permanent soil property is–
(A) Fertility status✓ (B) pH
(C) Texture (D) Structure

50. The ratio between gross and net cropped area is called an index of–
(A) Cropping intensity✓ (B) Multiple cropping
(C) High intensity cropping (D) None of these

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