Tag: rotation of crops

Questions Related to rotation of crops

Production of plant without fertilization is done by

botany reproduction in angiospermic plants patterns of cropping rotation of crops cropping patterns

  1. Vegetative propagation

  2. Transplantation

  3. Grafting

  4. Both A and C

Show answer
Correct Option: A
Explanation:

In plants, vegetative propagation is a type of asexual reproduction in which a new plant develops from a vegetative part of plant. This vegetative part is basically a stem, root or any other part of plant which have tendency to reproduce.

Thus, the correct answer is option D.

Selection of crops is done on the basis of

evs fertility of the soil patterns of cropping rotation of crops cropping patterns common irrigation systems

  1. Temperature

  2. Soil condition

  3. Land

  4. None of the above

Show answer
Correct Option: B
Explanation:

Selection of crops for rotation depends on soil condition, moisture condition, length of rainy season, type of inputs available (irrigation, fertiliser, pesticide, labour and machine power), risk involved, duration of crop (annual, biennial or perennial) and marketing and processing facilities. 

Which of the following agricultural practices keeps the fields free for a season allowing replenishment of the lost nutrients?

biology fertility of the soil patterns of cropping rotation of crops cropping patterns common irrigation systems

  1. Monocropping

  2. Crop rotation

  3. Multiple cropping

  4. Field fallow

Show answer
Correct Option: D
Explanation:

The farm land is ploughed and then not used for the cultivation of the crops for some time. This helps in the land to gain the fertility again and the method is known as field fallow. This provides the land some time to replenish its nutrients so that the next round of crops can grow properly.

Thus, the correct answer is option D. 

Which of these is/are the advantages of crop rotation?

biology fertility of the soil patterns of cropping rotation of crops cropping patterns common irrigation systems

  1. It prevents the depletion of selective nutrients

  2. It prevents the building up of diseases and pests of a particular crop

  3. It enhances the production by increasing the soil fertility

  4. All of the above

Show answer
Correct Option: D
Explanation:

The crop rotation is a pattern of growing a series of different types of crops in the same area in the sequential season. It is a method of replenishment of nutrients by the regular succession over the same field. It enhances the health of crops and minimizes the amount of pest. Thus, the correct answer is option D.

Which cropping method involves the successive growing of different crops in the same field in a definite pattern?

biology sustainable agriculture patterns of cropping rotation of crops cropping patterns common irrigation systems

  1. Mixed cropping

  2. Crop rotation

  3. Inter cropping

  4. Mixed farming

Show answer
Correct Option: C
Explanation:

Intercropping is the practice of growing two or more crops on the same piece of land in alternate rows. It increases the land productivity and acts as an insurance for the farmers during the crop failure.

So, the correct answer is option C.

Which cropping method involves growing two or more crops in definite row pattern?

biology sustainable agriculture patterns of cropping rotation of crops cropping patterns common irrigation systems

  1. Intercropping

  2. Mixed farming

  3. Mixed cropping

  4. Crop rotation

Show answer
Correct Option: A
Explanation:

Intercropping is a cropping practice that involves growing two or more crops in proximity in different rows. This practice of cultivating different crops gives higher income than the sole cropping. Intercropping maintains the soil fertility and reduces the soil runoff. 

Thus, the correct answer is option A. 

Which of these statements is true about intercropping?

biology sustainable agriculture patterns of cropping rotation of crops cropping patterns common irrigation systems

  1. Seeds of two crops are mixed before sowing.

  2. Harvesting and thrashing are not possible separately.

  3. Maximum utilisation of nutrients supplied.

  4. There are set pattern of rows of crops.

Show answer
Correct Option: D
Explanation:

Intercropping is growing two or more crops simultaneously in the same field in a definite pattern which avoids the competition between both the crops. The sowing time of crops in this pattern may be the same or different.

Which of the following terms is used for raising both plant crop and livestock on farm?

biology sustainable agriculture patterns of cropping rotation of crops cropping patterns common irrigation systems

  1. Mixed farming

  2. Intercropping

  3. Monocropping

  4. Crop rotation

Show answer
Correct Option: A
Explanation:

Mixed farming is a method of agriculture which involves cropping as well as raising livestock. For example growing of cereal crops with cattle farming as cattle excrete nitrogenous waste that can be used as manure for cereals whereas waste from crops is used as fooder and reduces the use of artificial fertilizers.

Which of the following disease in paddy crop is prevented by cultivating black gram or groundnut after paddy? 

biology sustainable agriculture patterns of cropping rotation of crops cropping patterns common irrigation systems

  1. Tungrovirus disease

  2. Spotted bole worm and dried disease

  3. Mosaic disease

  4. None of the above

Show answer
Correct Option: A
Explanation:

A.Tungro virus disease is transmitted by leafhoppers, wherein the most efficient vector is the green leafhopper,

B. Spotted bole worm and dried disease - This causes drying and shedding of terminal shoots before flowering. ... Damage is caused by the larvae of the spotted bollworm, Earias vittella, a common pest.

C.Mosaic viruses are plant viruses that cause the leaves to have a speckled appearance

So, the correct option is 'Tungro virus disease'.

Which of the following statements is/are correct regarding mixed cropping

(I) There is a definite pattern of sowing seeds.
(ii) It increases biodiversity.
 (iii) It removes some nutrients specifically
 (iv) Outbreaks of pests and diseases can spread very rapidly.
 (v) The crops with different maturation times are grown together. 
 (vi) Same fertilizers and pesticides are used for all crops
 (vii) The risk of total crop failure due to uncertain monsoon is reduced.    

biology sustainable agriculture patterns of cropping rotation of crops cropping patterns common irrigation systems

  1. (ii), (v), (vi), (vii)

  2. (i), (ii), (v), (vi)

  3. (iii), (iv), (v), (vi)

  4. (i), (ii), (iv), (vii)

Show answer
Correct Option: A
Explanation:

  • Mixed cropping is also known as polyculture, inter-cropping or co-cultivation.
  • It is a type of agriculture technique in which two or more plants are planted simultaneously in the same field, interlinking the crops so that they grow together.
  • Benefits of mixed cropping are:-
(1) It saves space as crops in the same field might ripen at different seasons.
(2) It provides various environmental benefits.
(3) A balance of input and outgo of soil nutrients.
(4) It helps in the suppression of plant diseases, suppression of weeds and insect pests.
(5) The risk of total crop failure due to uncertain monsoon is reduced.    

The correct answer is OPTION A.