Major crop production techniques and agro practices Part 2
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Question No. 1
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A farmer notices that the lower, older leaves of his corn plants are turning yellow, while the upper, younger leaves remain green. This is a classic symptom of which nutrient deficiency?
A.
Zinc
B.
Sulphur
C.
Nitrogen
D.
Iron
Question No. 2
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Why is it advisable to avoid excessive use of nitrogenous fertilizers in agriculture?
A.
It makes the soil highly acidic
B.
It can lead to water pollution through leaching and runoff
C.
It causes immediate wilting of the crop
D.
It attracts a higher number of pollinators
Question No. 3
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The practice of 'earthing up' in crops like potato and sugarcane is done primarily to:
A.
Control flowering time
B.
Provide support to the plant and encourage tuber/root development
C.
Increase the plant's height
D.
Protect the crop from frost
Question No. 4
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What is the principle behind using a pheromone trap in an agricultural field?
A.
It poisons the pests
B.
It physically kills the pests
C.
It attracts and traps the male insects of a specific pest species, disrupting their mating cycle
D.
It repels all kinds of insects from the field
Question No. 5
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A farmer wants to adopt a precision agriculture technique to apply fertilizers. Which of the following technologies would be most useful?
A.
Sprinkler irrigation system
B.
Combine harvester
C.
Variable Rate Technology (VRT) with GPS
D.
Seed drill
Question No. 6
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What is the key difference between biofertilizers and chemical fertilizers?
A.
Biofertilizers provide a much faster release of nutrients
B.
Chemical fertilizers improve the long-term health of the soil
C.
Biofertilizers contain living microorganisms that enhance nutrient availability for the plant
D.
Chemical fertilizers are always cheaper and more environmentally friendly
Question No. 7
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Which of the following is a primary benefit of adopting conservation tillage?
A.
Increased initial cost of machinery
B.
Higher soil compaction
C.
Improved soil health and water conservation
D.
Greater need for pesticides
Question No. 8
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The process of 'ginning' is specifically associated with which crop?
A.
Jute
B.
Cotton
C.
Flax
D.
Hemp
Question No. 9
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Why is crop rotation with a leguminous crop beneficial for the succeeding crop?
A.
Legumes add phosphorus to the soil
B.
Legumes improve soil aeration
C.
Legumes host nitrogen-fixing bacteria in their root nodules, enriching the soil with nitrogen
D.
Legumes are resistant to all pests
Question No. 10
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A farmer observes that his field remains waterlogged for long periods after irrigation. What is the most likely soil-related issue?
A.
High soil porosity
B.
Poor drainage due to a compacted layer or high clay content
C.
Low water holding capacity
D.
High organic matter content
Question No. 11
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What is the main objective of 'hardening' off seedlings before transplanting them to the main field?
A.
To make them grow taller quickly
B.
To change their leaf color
C.
To acclimate them gradually to the outdoor conditions of sunlight, temperature, and wind
D.
To induce early flowering
Question No. 12
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Which of the following best describes 'alley cropping'?
A.
Growing crops in narrow strips or alleys formed between rows of trees or shrubs
B.
Growing crops in a circular pattern
C.
Growing only one type of crop in a field
D.
Growing crops on steep slopes
Question No. 13
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The instrument used to measure the moisture content of grains is a:
A.
Hygrometer
B.
Moisture meter
C.
Anemometer
D.
Barometer
Question No. 14
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What is 'allelopathy'?
A.
The symbiotic relationship between two different plant species
B.
The phenomenon where one plant releases biochemicals that inhibit the growth of another plant
C.
The process of plants growing towards a light source
D.
The development of resistance in pests to a pesticide
Question No. 15
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Which of the following is a non-selective herbicide, meaning it can kill most types of plants it comes in contact with?
A.
2,4-D
B.
Atrazine
C.
Glyphosate
D.
Metribuzin
Question No. 16
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In the context of soil science, what does 'tilth' refer to?
A.
The nutrient content of the soil
B.
The pH level of the soil
C.
The physical condition of the soil in relation to its suitability for plant growth
D.
The color of the soil
Question No. 17
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What is the primary function of potassium (K) in plants?
A.
It is a component of chlorophyll
B.
It regulates water movement, enzyme activation, and photosynthesis
C.
It is essential for cell wall formation
D.
It is a key component of amino acids and proteins
Question No. 18
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Why is a cool and dry environment ideal for storing most grains?
A.
It encourages faster germination
B.
It slows down the growth of mold, fungi, and insect activity
C.
It increases the nutritional value of the grains
D.
It makes the grains easier to cook
Question No. 19
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The system where crops are grown on raised beds and irrigation water is applied to the furrows between the beds is known as:
A.
Flood Irrigation
B.
Bed and Furrow Irrigation
C.
Check Basin Irrigation
D.
Drip Irrigation
Question No. 20
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Which of the following is a cultural method for managing pests?
A.
Spraying a chemical insecticide
B.
Releasing a parasitic wasp
C.
Adjusting planting dates to avoid peak pest populations
D.
Using a genetically modified insect-resistant crop
Question No. 21
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What is the term for the removal of male flowers (tassels) in maize for the purpose of controlled hybridization?
A.
Detasseling
B.
Topping
C.
Ginning
D.
Roguing
Question No. 22
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A soil test report indicates a pH of 8.5. What would be the most appropriate amendment to make this soil more suitable for most crops?
A.
Adding lime (calcium carbonate)
B.
Adding wood ash
C.
Adding elemental sulfur or organic matter like peat moss
D.
Adding sand
Question No. 23
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What is the main advantage of using certified seeds for cultivation?
A.
They are always the cheapest option
B.
They guarantee a high yield regardless of farming practices
C.
They ensure genetic purity, high germination rates, and freedom from seed-borne diseases
D.
They do not require any fertilizer application
Question No. 24
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The practice of growing a series of different types of crops in the same area across a sequence of growing seasons is known as:
A.
Monoculture
B.
Crop Rotation
C.
Intercropping
D.
Fallow
Question No. 25
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Which irrigation method is best suited for sandy soils and undulating terrain?
A.
Flood Irrigation
B.
Check Basin Method
C.
Sprinkler Irrigation
D.
Furrow Irrigation
Question No. 26
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What does the term 'harvest index' signify?
A.
The total biomass of the crop
B.
The ratio of economic yield (e.g., grain) to the total biological yield (total plant biomass)
C.
The duration of the harvesting period
D.
The cost of harvesting the crop
Question No. 27
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Integrated Nutrient Management (INM) involves the combined use of:
A.
Only chemical fertilizers
B.
Only organic manures
C.
Chemical fertilizers, organic manures, and biofertilizers
D.
Only micronutrients
Question No. 28
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What is 'desuckering' in crops like banana and tobacco?
A.
The removal of the main growing point
B.
The removal of unwanted suckers or side shoots that grow from the base of the plant
C.
The process of drying the leaves
D.
The removal of flowers
Question No. 29
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Which of the following is an example of a physical barrier used for pest control?
A.
Ladybugs
B.
Neem oil spray
C.
Row covers or netting
D.
Pheromone traps
Question No. 30
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The wilting of a plant even when the soil is wet is often a symptom of:
A.
Drought stress
B.
Root rot diseases
C.
Nitrogen deficiency
D.
Frost damage
Question No. 31
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What is the purpose of a 'stale seedbed' technique?
A.
To prepare a seedbed that will remain fallow for a season
B.
To allow weed seeds in the top layer of the soil to germinate, which are then killed before the crop is sown
C.
To sterilize the soil using steam
D.
To create a very compact seedbed
Question No. 32
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Which macronutrient is crucial for strong root development and energy transfer (ATP) in plants?
A.
Nitrogen (N)
B.
Phosphorus (P)
C.
Potassium (K)
D.
Calcium (Ca)
Question No. 33
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The term 'green manure' refers to:
A.
Composted animal dung
B.
A fast-growing crop that is ploughed back into the soil to improve its fertility
C.
A type of liquid fertilizer derived from algae
D.
Dried and powdered leaves used as fertilizer
Question No. 34
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What is the primary environmental concern associated with the burning of crop residue (stubble)?
A.
Improvement of soil fertility
B.
Air pollution and release of greenhouse gases
C.
Reduction of pest populations
D.
Increase in soil moisture
Question No. 35
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In which type of farming system is the 'slash-and-burn' technique traditionally used?
A.
Commercial farming
B.
Intensive subsistence farming
C.
Shifting cultivation (Jhum)
D.
Plantation agriculture
Question No. 36
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What is the main function of a 'weeder' implement?
A.
To sow seeds
B.
To apply fertilizer
C.
To remove or disturb weeds
D.
To harvest the crop
Question No. 37
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The practice of growing plants in a mist environment where the roots are periodically sprayed with a nutrient solution is called:
A.
Hydroponics
B.
Aquaponics
C.
Aeroponics
D.
Geoponics
Question No. 38
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A farmer notices that the growing tips and young leaves of his plants are distorted and dying. This is a characteristic symptom of which nutrient deficiency?
A.
Potassium
B.
Magnesium
C.
Calcium
D.
Nitrogen
Question No. 39
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What is 'transplanting' in crop production?
A.
Moving a crop from one field to another mid-season
B.
The process of raising seedlings in a nursery and then planting them in the main field
C.
Sowing seeds directly into the main field
D.
Harvesting a crop in multiple stages
Question No. 40
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Which of the following is a benefit of 'strip cropping'?
A.
It increases the risk of pest infestation
B.
It is a form of monoculture
C.
It helps in controlling soil erosion by alternating strips of different types of crops
D.
It requires less labor than conventional farming
Question No. 41
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The measure of acidity or alkalinity of a soil is expressed by its:
A.
Electrical Conductivity (EC)
B.
Cation Exchange Capacity (CEC)
C.
pH value
D.
Organic Carbon content
Question No. 42
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Which of the following is a key characteristic of 'organic farming'?
A.
Use of genetically modified organisms (GMOs)
B.
Prohibition of synthetic fertilizers, pesticides, and GMOs
C.
Heavy reliance on chemical inputs
D.
Focus on short-term yield maximization
Question No. 43
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What is the process of 'curing' in tobacco leaves?
A.
Washing the leaves thoroughly with water
B.
A controlled drying process to develop the desired aroma, flavor, and color
C.
Coating the leaves with a protective wax
D.
Shredding the leaves for immediate use
Question No. 44
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Which of the following practices can help in conserving soil moisture in arid and semi-arid regions?
A.
Intensive tillage
B.
Mulching
C.
Leaving the soil bare
D.
Flood irrigation
Question No. 45
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The cultivation of fruits, vegetables, and flowers is broadly categorized under:
A.
Agronomy
B.
Sericulture
C.
Horticulture
D.
Apiculture
Question No. 46
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What is the purpose of 'priming' seeds before sowing?
A.
To color the seeds for easy identification
B.
A pre-sowing treatment that involves controlled hydration to initiate germination processes and ensure rapid, uniform emergence
C.
To coat the seeds with pesticides
D.
To make the seeds smaller
Question No. 47
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Which of the following is a major benefit of integrated pest management (IPM) over a purely chemical approach?
A.
It completely eradicates all insect species from the farm
B.
It is usually less knowledge-intensive for the farmer
C.
It reduces the development of pesticide resistance and is more environmentally friendly
D.
It always results in higher yields in the first year of adoption
Question No. 48
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The practice of growing only one crop in a field at a time is known as:
A.
Mixed cropping
B.
Sole cropping or Monocropping
C.
Relay cropping
D.
Intercropping
Question No. 49
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What is the 'field capacity' of a soil?
A.
The maximum amount of water the soil can hold against gravity after excess water has drained away
B.
The point at which plants can no longer extract water from the soil
C.
The rate at which water enters the soil
D.
The amount of water lost through evaporation
Question No. 50
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Why is land levelling an important part of land preparation?
A.
It increases the unevenness of the field
B.
It ensures uniform distribution of irrigation water and improves crop stand
C.
It is done to decrease the soil pH
D.
It helps in increasing the weed population
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