Crop Selection, Nutrient Management & Alternate Land Use in Drylands

Question No. 1 Marks +1 -0 Time

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Which of the following dryland crops is known for its high drought tolerance and C4 photosynthetic pathway, making it efficient in water use?

A. Wheat
B. Rice
C. Sorghum
D. Soybean

Question No. 2 Marks +1 -0 Time

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In dryland agriculture, what is the primary objective of practicing contour farming?

A. To increase the speed of water runoff to prevent waterlogging.
B. To facilitate easier mechanical cultivation on sloped lands.
C. To reduce soil erosion and enhance water infiltration by creating barriers along contours.
D. To maximize sunlight exposure for crops by orienting rows north-south.

Question No. 3 Marks +1 -0 Time

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Which of the following nutrient management strategies is most effective in improving soil organic matter content and water retention in dryland soils?

A. Exclusive use of synthetic nitrogen fertilizers.
B. Frequent deep plowing to aerate the soil.
C. Application of farmyard manure (FYM) and crop residues.
D. Continuous monocropping of high-nutrient demanding crops.

Question No. 4 Marks +1 -0 Time

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Evaluate the primary reason why 'agroforestry' is considered a beneficial alternate land use system in dryland regions.

A. It exclusively focuses on commercial timber production, offering high economic returns.
B. It helps in rapid depletion of groundwater resources due to increased tree cover.
C. It integrates trees with crops and/or livestock, enhancing biodiversity, soil fertility, and providing diversified income sources.
D. It requires significant irrigation infrastructure, making it suitable only for irrigated drylands.

Question No. 5 Marks +1 -0 Time

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Match the following dryland farming practices with their primary objectives:

Practice	Objective
1. Mulching	P. Enhances soil moisture retention
2. Intercropping	Q. Mitigates wind erosion
3. Shelterbelts	R. Optimizes land use and reduces pest incidence
4. Zero Tillage	S. Preserves soil structure and organic matter

Choose the correct combination:

A. 1-P, 2-R, 3-Q, 4-S
B. 1-Q, 2-S, 3-P, 4-R
C. 1-R, 2-P, 3-S, 4-Q
D. 1-S, 2-Q, 3-R, 4-P

Question No. 6 Marks +1 -0 Time

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Which type of crop rotation is generally recommended for dryland areas to maintain soil fertility and break pest cycles?

A. Monocropping of the highest-yielding cash crop.
B. Continuous rotation of cereals only.
C. Rotation including legumes (e.g., pulses) with cereals.
D. Leaving the land fallow for several consecutive years.

Question No. 7 Marks +1 -0 Time

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In the context of nutrient management in drylands, what is the significance of using biofertilizers like Rhizobium or Azotobacter?

A. They directly supply all major micronutrients to the soil.
B. They significantly increase the soil pH, making it more alkaline.
C. They enhance nutrient availability by fixing atmospheric nitrogen or solubilizing phosphorus, reducing reliance on chemical fertilizers.
D. They act as broad-spectrum pesticides, protecting crops from insect attacks.

Question No. 8 Marks +1 -0 Time

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Consider the following statements regarding 'fallowing' in dryland agriculture:
1. It involves leaving agricultural land uncropped for a season or more.
2. Its primary goal is to conserve soil moisture and accumulate nutrients.
3. It generally leads to an immediate increase in crop yield in the subsequent season.

Which of the above statements are correct?

A. 1 and 2 only
B. 2 and 3 only
C. 1 and 3 only
D. 1, 2 and 3

Question No. 9 Marks +1 -0 Time

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Which of the following is an example of an alternative land-use system designed to provide both food and fodder in dryland areas, often involving trees, crops, and livestock?

A. Monoculture of wheat
B. Extensive industrial logging
C. Silvopastoral system
D. Hydroponic farming

Question No. 10 Marks +1 -0 Time

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Arrange the following steps for establishing a successful dryland crop in a typical chronological order:
1. Seedbed preparation
2. Harvesting
3. Sowing
4. Soil moisture conservation measures

Choose the correct sequence:

A. 4, 1, 3, 2
B. 1, 4, 3, 2
C. 3, 1, 4, 2
D. 4, 3, 1, 2

Question No. 11 Marks +1 -0 Time

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What is the primary benefit of using drought-resistant varieties of crops in dryland agriculture?

A. They require significantly higher doses of chemical fertilizers for optimal growth.
B. They can produce acceptable yields even under limited water availability.
C. They are completely immune to all types of pest and disease attacks.
D. They mature much slower, allowing for extended growing seasons.

Question No. 12 Marks +1 -0 Time

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Which micronutrient deficiency is commonly observed in dryland soils, often leading to reduced crop vigor and yield, especially in cereals?

A. Calcium
B. Magnesium
C. Zinc
D. Sulfur

Question No. 13 Marks +1 -0 Time

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How does the practice of 'alley cropping' contribute to sustainable land use in drylands?

A. It involves growing a single crop type in wide rows to maximize efficiency.
B. It promotes the cultivation of annual crops in alleys between rows of perennial trees or shrubs, offering multiple benefits like nutrient cycling and erosion control.
C. It is a specialized form of hydroponics, requiring no soil.
D. It primarily focuses on intensive livestock grazing without any crop cultivation.

Question No. 14 Marks +1 -0 Time

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Consider the following pairs related to dryland nutrient management practices:
1. Green Manuring : Improves soil organic matter and nitrogen content
2. Phosphorus Solubilizing Bacteria (PSB) : Converts insoluble phosphates into soluble forms
3. Crop Residue Retention : Increases soil moisture evaporation
4. Split Application of Nitrogen : Reduces leaching losses and enhances nutrient use efficiency

How many of the above pairs are correctly matched?

A. Only one pair
B. Only two pairs
C. Only three pairs
D. All four pairs

Question No. 15 Marks +1 -0 Time

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Why is the selection of short-duration crop varieties particularly important in dryland regions?

A. They require more intensive irrigation, making them suitable for areas with abundant water.
B. They can escape terminal drought stress by completing their life cycle before severe water scarcity sets in.
C. They are inherently resistant to all types of fungal diseases prevalent in dry climates.
D. They produce larger biomass, which is ideal for fodder production, even if grain yield is low.

Question No. 16 Marks +1 -0 Time

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Which method of nutrient application is generally preferred in dryland conditions to maximize nutrient use efficiency and minimize losses?

A. Broadcasting fertilizers uniformly over the entire field.
B. Foliar application to rapidly correct deficiencies, especially for micronutrients.
C. Deep placement of fertilizers near the root zone.
D. Applying all fertilizers at once at the beginning of the season.

Question No. 17 Marks +1 -0 Time

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Which of the following is a key characteristic of dryland soils that influences nutrient management strategies?

A. High organic matter content and excellent water retention.
B. Predominantly acidic pH, requiring liming.
C. Low organic matter content, poor water holding capacity, and often nutrient deficiencies.
D. High rainfall leading to significant nutrient leaching.

Question No. 18 Marks +1 -0 Time

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What is the primary role of 'windbreaks' or 'shelterbelts' as an alternate land use strategy in dryland areas?

A. To increase the velocity of wind to aid in natural seed dispersal.
B. To create barriers that reduce wind erosion, protect crops, and conserve soil moisture.
C. To provide a continuous supply of water through transpiration for adjacent crops.
D. To attract more rainfall by increasing local humidity.

Question No. 19 Marks +1 -0 Time

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Consider the following crops:
1. Pearl Millet (Bajra)
2. Chickpea (Chana)
3. Maize (Corn)
4. Groundnut (Peanut)

Which of these are generally considered suitable for cultivation in dryland regions due to their drought tolerance or ability to thrive with limited moisture?

A. 1, 2 and 3 only
B. 1, 2 and 4 only
C. 2, 3 and 4 only
D. 1, 2, 3 and 4

Question No. 20 Marks +1 -0 Time

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What is the main purpose of practicing 'conservation tillage' (e.g., minimum tillage or no-tillage) in dryland farming?

A. To increase the frequency of plowing for better soil aeration.
B. To reduce labor costs by avoiding the use of heavy machinery.
C. To retain crop residues on the soil surface, thereby conserving moisture, reducing erosion, and improving soil health.
D. To promote rapid decomposition of organic matter through extensive soil disturbance.

Question No. 21 Marks +1 -0 Time

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Which of the following is a common strategy for managing phosphorus deficiency in dryland soils, where phosphorus availability is often low?

A. Relying solely on atmospheric phosphorus deposition.
B. Applying phosphorus fertilizers through broadcasting on the soil surface without incorporation.
C. Using phosphorus-solubilizing bacteria (PSB) and deep placement of phosphatic fertilizers.
D. Increasing irrigation frequency to dissolve soil phosphorus.

Question No. 22 Marks +1 -0 Time

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Evaluate the primary benefit of integrating livestock into dryland farming systems (mixed farming).

A. It eliminates the need for any crop cultivation, simplifying farm management.
B. It increases the farm's vulnerability to climate shocks due to increased resource demands.
C. It provides diversified income, utilizes crop residues as fodder, and recycles nutrients through manure, enhancing system resilience.
D. It primarily serves as a source of draft power, with no other significant benefits.

Question No. 23 Marks +1 -0 Time

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Match the following dryland crop types with their typical water use efficiency classification:

Crop Type	Water Use Efficiency
1. Millets (e.g., Pearl Millet)	P. Moderate to High
2. Wheat	Q. High
3. Lentils	R. Low
4. Rice	S. Moderate

Choose the correct combination:

A. 1-Q, 2-S, 3-P, 4-R
B. 1-P, 2-Q, 3-R, 4-S
C. 1-S, 2-R, 3-Q, 4-P
D. 1-R, 2-P, 3-S, 4-Q

Question No. 24 Marks +1 -0 Time

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In the context of dryland agriculture, what does 'water harvesting' primarily aim to achieve?

A. To extract underground water for large-scale irrigation projects.
B. To collect and store rainwater runoff for later productive use in agriculture.
C. To increase the rate of evaporation from water bodies to induce rainfall.
D. To desalinate seawater for drinking purposes.

Question No. 25 Marks +1 -0 Time

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Which of the following is a key characteristic of suitable crops for dryland areas, besides drought tolerance?

A. Extremely long growth cycles to maximize biomass.
B. High water requirements throughout their growth period.
C. Ability to withstand high salinity levels in soil.
D. Deep root systems to access subsoil moisture.

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