Agronomy Objective type Questions and Answers MCQ with PDF Download

Dear Aspirants, Most important Agronomy questions and answers 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. Hyrbid rice for commercial production was first evolved in–
(A) India (B) China✓
(C) Japan (D) USA

2. If the rate of application per hectare is 3.00 kg a.i., the quantity of simazine WP (801'l'(J a.i.) required to be sprayed in 0.20 hectare area would be
(A) 0.50 kg (B) 0.75 kg✓
(C) 1.25 kg (D) 1.87 kg

3. Which one of the following has organic form of sulphur ?
(A) Purine (B) Cysteine✓
(C) RNA (D) Phytin

4. Which form of nitrogen is available in urea?
(A) Ammonical (B) Amide✓
(C) Nitrite (D) Nitrate

5. Application of potash increases–
(A) Disease resistance in plants✓ (B) Resistance for water logging
(C) Frost resistance in plants (D) None of these

6. Which of these herbicides is used to control weeds in zero tillage ?
(A) Pendimethalin (B) Fluchloralin
(C) Paraquat✓ (D) Alachlor

7. The crown roots in wheat appear
(A) Above soil surface (B) Below soil surface but above seed✓
(C) Below soil surface and below seed (D) Below seed

8. Which vegetable oil is good for heart patient?
(A) Groundnut oil (B) Mustard oil
(C) Soybean oil (D) Sunflower oil✓

9. UPAS 120 is a variety of–
(A) Wheat (B) Pigeon pea✓
(C) Barley (D) Urd

10. Among the following, which plants- nutrient elements reaches roots by the process of diffusion ?
(A) Phosphorus✓ (B) Calcium
(C) Nitrogen (D) Potassium

11. The roots of which crop plant release allelopathic chemicals into the soil that inhibit the germination of succeeding crop?
(A) Sorghum (B) Sunflower✓
(C) Maize (D) Red gram

12. Plant food manufactured by the process of photosynthesis in the presence of a nutrient in chlorophyll is–
(A) Ca (B) Mg✓
(C) Iron (D) Boron

13. During germination radical and plumule develop from–
(A) Embryo✓ (B) Endosperm
(C) Hilum (D) Seed coat

14. In which of the following, composite and synthetic cultivars are used ?
(A) Rice (B) Wheat
(C) Maize✓(D) Cotton

15. Which cation has low adsorption capacity on clay?
(A) H (B) Ca
(C) Fe (D) Na✓

16. PDM 11 is a variety of–
(A) Urd (B) Arhar
(C) Moong✓ (D) Lobia

17. All the grain legumes have a high photo respiration because of–
(A) C3 mechanism✓ (B) More vegetative growth
(C) Indeterminate (D) Pod position

18. Soil structure is improved by application of–
(A) Urea (B) Super phosphate✓
(C) Muriate of potash (D) Zinc sulphate

19. Organic carbon is a measure of–
(A) Available N in soil✓ (B) Available P in soil
(C) Available K in soil (D) Available Mg in soil

20. Hydraulic conductivity of soil is very low in case of–
(A) Acid soils (B) Saline soils
(C) Loam soils (D) Alkali soils✓

21. Approximate weight of surface 15 cm soil of one hectare field is–
(A) 1 x 106 kg (B) 1.5 x 106 kg
(C) 2 x 106 kg (D) 2.24 x 106 kg✓

22. Tilth is related to–
(A) Shape of the soil aggregates (B) Size distribution of the soil aggregates
(C) Arrangement of the soil aggregates (D) All of these✓

23. Seed work board is 'required for–
(A) Viability test of seed (B) Germination test of seed
(C) Purity test of seed (D) Blending of seed✓

24. Repetitive growing of same sole crop on  the same field is known as
(A) Mono Cropping✓ (B) Sequential Cropping
(C) Relay Cropping (D) Multiple Cropping

25. Which crop of the following has the double symbiotic relationship with nitrogen fixing bacteria ?
(A) Phaseolus vulgaris (B) Cajanus cajan
(C) Sesbania rostrata✓ (D) Glijcine max

26. Which one of the following crops causes maximum reduction in soil alkalinity ?
(A) Paddy (B) Maize
(C) Cowpea (D) Wheat

27. Zero Hllage system was first used successfully in 1950 in pasture renovation in–
(A) Germany (B) Japan
(C) United Kingdom (D) USA✓

28. An annual weed rice field is–
(A) Anagalliis aruensis (B) Echinochloa crusgalli✓
(C) Amarautltus Spinosus (D) Phalaris mitior

29. Flow of water in saturated soil is described by–
(A) Poiseuille's law (B) Darcy's law
(C) Fick's law (D) Both (A) and (B)✓

30. Seed rate of transplanted basmati rice is–
(A) 25-30 kg/ha (B) 35-40 kg/ha✓
(C) 45-60 kg/ha (D) 55-70 kg/ha

31. Mat type nursery is related to–
(A) Tobacco crop (B) Paddy crop✓
(C) Onion crop (D) Brinjal

32. The current per capita forest area in India is–
(A) 0.11 ha (B) 0.09 ha
(C) 0.07 ha✓ (D) 0.05 ha

33. The most concentrated fertilizer used for nutrient supply is–
(A) Urea (B) OAP
(C) Anhydrous ammonia✓ (D) SSP

34. Which one of the following is not narrow leaved weeds ?
(D) Cifnodon dactsjlou (B) Cqperus rotundus
(C) Setaria glauca (D) Melilotus indica✓

35. Rancidity in sunflower oil is caused by
(A) Reduction (B) Oxidation✓
(C) Esterification (D) Nitrification

36. First hybrid maize Ganga-l was developed in India in–
(A) 1957 (B) 1961✓
(C) 1964 (D) 1965

37. Which one of the following is a hybrid variety of maize ?
(A) Vikram (B) Amber
(C) Kissan (D) Sangam✓

38. Test weight of sorghum is
(A) 20-25 gram (B) 25-30 gram✓
(C) 30-35 gram (D) 70-72 gram

39. CSH-1 was first sorghum hybrid released in
(A) 1961 (B) 1962
(C) 1963 (D) 1964✓

40. Required plant population of gram may be obtained by using a seed rate of (kg/ha)–
(A) 50-75 (B) 75 -100✓
(C) 90 -110 (D) 100 -125

41. The optimum seed rate for pigeonpea crop is–
(A) 10-12 kg/ha (B) 12-15 kg/ha
(C) 15-17 kg/ha (D) 20-25 kg/ha

42. The trailing or spreading type of groundnut include–
(A) Arachis hypogea subsp. fastigiata
(B) Arachis lujpogea subsp. procumbens✓
(C) Both (A) and (B) (D) None of these

43. Linseed belongs to family–
(A) Liliaceae (B) Linaceae✓
(C) Tiliaceae (D) Pedaliaceae

44. Weight of one cotton bale is equal to–
(A) 160 kg (B) 170 kg✓
(C) 180 kg (D) 178 kg

45. The optimum temperature for retting of sannhemp is–
(A) 14 -21°C (B) 21-27°C✓
(C) 30-34°C✓ (D) 35-38°C

46. Pusa Sadabhar, Pusa Mausmi and Pusa Naubahar are the improved varieties of–
(A) Oat (B) Berseem
(C) Lucerne (D) Guar✓

47. Sugarbeet matures in–
(A) April/May✓ (B) JuneIJuly
(C) September/October (D) January/February

48. The optimum seed rate for sunflower is (kg/ha)–
(A) 8-10✓ (B) 10-15
(C) 18 - 20 (D) 30 - 35

49. Blackgram is originated in–
(A) India✓ (B) Tropical America
(C) China (D) Indonesia

50. The use of tensiometer is confined up to matric potential of–
(A) - 0.8 bar✓ (B) - 0.6 bar
(C) - 0.4 bar (D) - 0.2 bar

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