1) Father of Agronomy is:
A. Van Helmont
B. Peter de Crescent
C. Norman Borlaug
D. Pietro de’ Crescenzi
Answer: B
( Agronomy, a branch of agricultural science, focuses on the principles and practices of crop production and soil management )
2)Branch of science dealing with principles of crop production is:
A. Horticulture
B. Agronomy
C. Soil Science
D. Genetics
Answer: B
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3)Crop rotation helps in:
A. Increasing yield only
B. Soil degradation
C. Pest and disease control
D. Decreasing organic matter
Answer: C
4)Optimum soil pH for most crops is:
A. 3.5–4.5
B. 5.5–6.5
C. 6.5–7.5
D. 8.5–9.5
Answer: C
5)Zero tillage is commonly used in:
A. Jute cultivation
B. Rice cultivation
C. Wheat after rice
D. Sugarcane
Answer: C
6)First agricultural university in India was established at:
A. Pantnagar
B. Hyderabad
C. Kanpur
D. Ludhiana
Answer: A
7)ICAR was established in:
A. 1929
B. 1950
C. 1965
D. 1947
Answer: A
8)Green manure crop among these is:
A. Bajra
B. Sesbania
C. Maize
D. Cotton
Answer: B
9)C:N ratio of farmyard manure (FYM) is approx :
A. 10:1
B. 20:1
C. 30:1
D. 50:1
Answer: A
10)Which crop is used as a bio indicator of nitrogen deficiency?
A. Maize
B. Sorghum
C. Rice
D. Sunflower
Answer: C
11)Best time for sowing wheat in northern India:
A. September
B. October
C. November
D. December
Answer: C
12)Broadcasting is a method of:
A. Irrigation
B. Harvesting
C. Seed sowing
D. Fertilizer application
Answer: C
13) Kharif crops are sown in:
A. Winter
B. Summer
C. Rainy season
D. Post-monsoon
Answer: C
( Kharif refers to a crop that is planted before the monsoon season and harvested in the Autumn )
14)Ideal temperature for wheat germination is:
A. 10–15°C
B. 20–25°C
C. 30–35°C
D. 35–40°C
Answer: A
15)Which method is best for water use efficiency?
A. Surface irrigation
B. Sprinkler
C. Drip irrigation
D. Flood irrigation
Answer: C
16)Leguminous crops fix nitrogen through:
A. Roots
B. Leaves
C. Rhizobium bacteria
D. Photosynthesis
Answer: C
17)Rain fed farming is also called:
A. Wetland farming
B. Dry land farming
C. Irrigated farming
D. Lowland farming
Answer: B
18)A Rabi crop is:
A. Rice
B. Cotton
C. Wheat
D. Maize
Answer: C
( "Rabi" refers to Agriculture crops that are sown in the winter and harvested in the spring in south Asia )
19)Spacing for wheat under normal condition is:
A. 15 cm
B. 20 cm
C. 22.5 cm
D. 25 cm
Answer: C
20)Which is not a cereal crop?
A. Maize
B. Barley
C. Mustard
D. Wheat
Answer: C
21)Soil is a mixture of:
A. Minerals
B. Organic matter
C. Air and water
D. All of the above
Answer :D
22)Black cotton soil is rich in:
A. Sand
B. Clay
C. Silt
D. Gravel
Answer: B
23)Soil structure refers to:
A. Texture
B. Arrangement of soil particles
C. Mineral composition
D. pH
Answer: B
24)Ideal pH range for nutrient availability in soil is:
A. 4.5–5.5
B. 5.5–6.5
C. 6.5–7.5
D. 7.5–8.5
Answer: C
25)Water holding capacity is highest in:
A. Sandy soil
B. Silty soil
C. Clayey soil
D. Loamy soil
Answer: C
26)Soil horizon rich in organic matter is:
A. A horizon
B. B horizon
C. C horizon
D. R horizon
Answer: A
27)Pore space is highest in:
A. Sandy soils
B. Clay soils
C. Loamy soils
D. Peaty soils
Answer: D
28)Bulk density of ideal agricultural soil is:
A. 1.0 g/cc
B. 1.3 g/cc
C. 1.8 g/cc
D. 2.2 g/cc
Answer: B
29)Soil with pH below 7 is:
A. Alkaline
B. Neutral
C. Acidic
D. Saline
Answer: C
30)Saline soils have high:
A. Calcium
B. Magnesium
C. Sodium
D. Iron
Answer: C
31)Gypsum is used to reclaim:
A. Acid soils
B. Alkaline soils
C. Saline soils
D. Sodic soils
Answer: D
32)Essential elements are:
A. 10
B. 13
C. 16
D. 20
Answer: C
33)Leaching loss is common in:
A. Nitrogen
B. Phosphorus
C. Potassium
D. Iron
Answer: A
34)Phosphorus is absorbed in soil as:
A. PO₄³⁻
B. NO₃⁻
C. K⁺
D. NH₄⁺
Answer: A
35)Organic matter improves:
A. Water retention
B. Soil structure
C. Nutrient availability
D. All of the above
Answer: D
36)Which soil color indicates high organic content?
A. Red
B. Yellow
C. Black
D. Grey
Answer: C
37)CEC (Cation Exchange Capacity) is high in:
A. Sand
B. Silt
C. Clay
D. Peat
Answer: D
38)Erosion by wind is known as:
A. Sheet erosion
B. Rill erosion
C. Gully erosion
D. Aeolian erosion
Answer: D
39Soil texture is determined by:
A. Color
B. Mineral content
C. Particle size
D. Water content
Answer: C
40)Soil fertility is different from soil productivity in that fertility refers to:
A. Physical condition
B. Water content
C. Nutrient supply capacity
D. Crop yield
Answer: C
41)Urea contains how much nitrogen?
A. 26%
B. 36%
C. 46%
D. 56%
Answer: C
42) DAP stands for:
A. Diammonium Phosphate
B. Dicalcium Phosphate
C. Double Ammonium Phosphate
D. Direct Acidic Phosphate
Answer: A
43)Which nutrient is called "Master nutrient" for plants?
A. Potassium
B. Nitrogen
C. Phosphorus
D. Iron
Answer: B
44) Nitrogen is absorbed by plants in the form of:
A. N₂ gas
B. NH₃
C. NO₃⁻ and NH₄⁺
D. NO₂⁻
Answer: C
45) The deficiency of phosphorus leads to:
A. Yellowing of leaves
B. Stunted growth and purpling
C. Tip burning
D. Wilting
Answer: B
46) Potassium helps in:
A. Root development
B. Flowering
C. Disease resistance and water regulation
D. Chlorophyll formation
Answer: C
47) Which fertilizer is commonly used as a top dressing?
A. DAP
B. SSP
C. Urea
D. MOP
Answer: C
48) Micronutrients include all except:
A. Zinc
B. Copper
C. Manganese
D. Calcium
Answer: D
49) Bio fertilizer containing Rhizobium is useful for:
A. Paddy
B. Wheat
C. Pulses
D. Maize
Answer: C
50)The term “straight fertilizer” means:
A. Contains only one primary nutrient
B. Contains all nutrients
C. Used for mixing
D. Organic fertilizer
Answer :A
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