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Class 8 Practice – Level 3 – Set 1 – Crop Production and Management
Total questions: 15
1.
Which technique helps to restore soil fertility in highly degraded lands used for intensive farming?
Frequent irrigation
Continuous monocropping
Green manuring with leguminous plants
Using only chemical fertilizers
None
2.
Which farming method is the most sustainable for long-term soil health and minimizes environmental impact?
Extensive chemical fertilizer use
Slash-and-burn agriculture
Organic farming with crop rotation
Intensive irrigation with no crop rotation
None
3.
What is a major drawback of using flood irrigation in agriculture?
It requires complex machinery
It increases water salinity
It causes over-aeration of the soil
It leads to water wastage and soil erosion
None
4.
Which of the following methods is considered the most environmentally friendly for controlling weeds in crops?
Herbicide application
Mulching and manual weeding
Frequent ploughing
Burning of fields after harvest
None
5.
The overuse of chemical pesticides in farming often leads to:
Improved soil fertility
Increased biodiversity
Development of pesticide-resistant pests
Reduced crop yield
None
6.
Which of the following non-chemical methods can effectively prevent soil erosion in areas prone to wind and water erosion?
Increased irrigation
Agroforestry and contour ploughing
Use of herbicides
Overgrazing by livestock
None
7.
Why does continuous monocropping lead to soil degradation and reduced fertility over time?
It increases soil salinity
It exhausts specific nutrients in the soil
It increases biodiversity
It prevents soil compaction
None
8.
What is the key benefit of using bio-fertilizers in agriculture over synthetic fertilizers?
They work faster than synthetic fertilizers
They increase soil acidity
They enhance the population of beneficial microorganisms
They provide a single nutrient to the soil
None
9.
Which of the following is a significant disadvantage of monoculture farming in large-scale crop production?
Increased crop yield
Higher pest vulnerability
Reduced water usage
Easier management of crops
None
10.
What is the major advantage of zero tillage or no-till farming?
Higher seed germination rates
Reduced soil compaction and preservation of soil structure
Increased water evaporation
Faster crop growth
None
11.
Why is biological pest control often preferred over chemical pest control methods?
It provides immediate results
It increases chemical residues in crops
It is specific to certain pests and environmentally friendly
It promotes pest resistance
None
12.
Which characteristic is most important when selecting seeds for a crop variety that will be grown in regions prone to drought?
Disease resistance
Water retention capability
Pest resistance
Shorter growing period
None
13.
Micro-irrigation systems, such as drip irrigation, are particularly useful in:
Areas with high rainfall
Regions with low soil fertility
Arid and semi-arid regions with limited water resources
Regions with abundant water supply
None
14.
What is the primary reason for fumigating stored grains?
To add nutrients to the grains
To eliminate pests and prevent infestations
To increase the grains' weight
To improve the flavor of the grains
None
15.
Why is mixed cropping beneficial in increasing the yield of small farms?
It allows continuous use of fertilizers
It minimizes pest infestations and optimizes the use of available resources
It requires less labor
It ensures maximum water usage
None
1 out of 15
Time's up
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