This set of Agriculture Multiple Choice Questions & Answers (MCQs) focuses on “Special Classification of Crops”.
1. Crop which require preparatory tillage are known as ________
a) Brake crops
b) Alley crops
c) Border crops
d) Arable crops
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Explanation: Some crops can be directly sown on unploughed land. Most of the crops require Tillage operations such as Ploughing and Harrowing. Examples are Potato, Tobacco, Rice, Sugarcane and Maize.
2. What are the main functions of Alley Crops?
a) Soil fertility restoration
b) Enhance soil productivity
c) Reduce soil erosion
d) Increase drought condition
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Explanation: When arable crops are grown on alleys/passages formed by trees or shrubs this type of cropping is known as Alley cropping. Arable crops such as sweet potato, urd, turmeric and ginger are grown in the passage formed by the rows of Eucalyptus, Subabool and Cassia.
3. Japanese mustard grown with Berseem is an example of ______
a) Augmenting Crops
b) Competitive Crops
c) Cleaning Crops
d) Mulch Crops
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Explanation: Japanese mustard grown worthberseem is an example of Augmenting Crop. In Augmenting cropping crops are sown to supplement the yield of the main crop. Here Japanese mustard help in getting higher yield in the first cutting.
4. Crops which help to protect another crop from trespassing of animals or restrict the speed of the wind and are grown on border are known as _______
a) Brake Crop
b) Cash Crop
c) Exhaustive Crop
d) Border Crop
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Explanation: Border crop is also known as Barrier crop or Guard crop. Example of Border crops are Safflower (Thorny Oilseed Crop) when planted around the field of Chickpea.
5. The crop which is grown to break the continuity of agro-ecological situation of the field under multiple cropping systems is _____
a) Brake crop
b) Ley crops
c) Nurse crop
d) Fouling crop
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Explanation: Brake crops are used to reduce the inoculums of soil-borne harmful biotic agents such as weeds, pest and improves soil condition for crop growth e.g. Legume in rice-wheat system.
6. Catch crop is also known as _________
a) Cleaning crop
b) Contour crop
c) Emergency crop
d) Commercial crop
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Explanation: Catch crop or Emergency Crops are cultivated to catch the forthcoming season when main crop is failed. Catch crops are short duration, quick growing, fast bulking, harvestable crops e.g. Green gram, Urd and Cowpea.
7. “Cole” word in Cole crop is derived from ______
a) Colewort
b) Coltar
c) Coller
d) Colee
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Explanation: ‘Cole’ word is derived from colewart. Colewart is the ancestor of wild cabbage. Therefore, Cole crops are essentially cold weather crops belonging to cruciferae capable for withstanding considerable frost e.g. cabbage and cauliflower.
8. Jute is a _______
a) Cover crop
b) Cole crop
c) Energy crop
d) Commercial crop
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Explanation: Jute is a Commercial crop. Such crops are grown to earn money. Examples of commercial crops are Cotton, Tobacco and Sugarcane. All the cash crops can be said as Commercial crop.
9. Crops grown for feeding of livestock is known as __________
a) Grazing crop
b) Ley crop
c) Cash crop
d) Catch crop
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Explanation: Any crop or crop combination grown for grazing or harvesting for immediate or future feeding to livestock is known as Ley cropping e.g. Berseem + mustard.
10. Jowar in Pea is an example of _________
a) Energy crop
b) Cleaning crop
c) Mulch crop
d) Nurse crop
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Explanation: Jowar in Pea is an example of Nurse Crop. Such crops help in the nourishment of other crops by providing shade and acting as climbing sticks other example is rai in peas.
11. Paira crop is also known as ________
a) Utera crop
b) Soiling crop
c) Truck crop
d) Smother crop
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Explanation: Paira crop or Utera crop are grown few days or weeks before harvesting of standing crop e.g. Lathyrus in rice. Paira crop in succession may constitute relay cropping.
12. Decoy crop is another name for _________
a) Trap crop
b) Truck crop
c) Riparian crop
d) Skip crop
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Explanation: Decoy crop or Trap crop is grown to trap insects-pests and soil borne harmful biotic agents such as parasitic weeds e.g. Cotton red bug is trapped by growing Bhindi around cotton.
13. Crops grown to suppress the growth of weeds are ________
a) Smother crops
b) Soiling crop
c) Skip crop
d) Paired crop
View Answer
Explanation: Smother crops are also known as suppressing crops. Their main function is to suppress the population and growth of weeds by providing dense foliage and quick growing ability e.g. Cowpea, Mustard.
Sanfoundry Global Education & Learning Series – Agriculture.
To practice all areas of Agriculture, here is complete set of Multiple Choice Questions and Answers.
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