Tag: evs

Questions Related to evs

A farmer sows peas in his field after harvesting a crop of rice. Which agricultural practice is he following ?

evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

  1. Crop rotation

  2. Multiple cropping

  3. Field fallow

  4. Mixed cropping

Show answer
Correct Option: A
Explanation:

Crop rotation is the practice of growing a series of dissimilar or different types of crops in the same area in sequenced reasons. It is done so that the soil of farms is not used for only one set of nutrients. It helps in reducing soil erosion and increases siol fertility and crop yeild.

A farmer desiring to get maximum sugar content in his sugar-cane crop will be well advised

evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

  1. To harvest his crop before the initiation of flowering

  2. To allow his crop grow for as long as possible even after flowering

  3. Not to irrigate his crop profusely so that sugar content of the crop may not be dissolved and leached into the soil

  4. Not to worry about flowering of the crop

Show answer
Correct Option: A
Explanation:

Since a certain amount of food materials (including the sugar) is diverted for flowering, it is profitable to harvest the sugarcane crop before the initiation of flowering to obtain the maximum sugar content.

The growing of ____ crops on a piece of land in a pre-planned succession is known as crop rotation

evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

  1. Similar

  2. Different

  3. No change occur

  4. None of these

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Correct Option: B

What lead to the increasing yield of production?

evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

  1. Crop rotation

  2. High yielding variety of seed

  3. Synthetic fertilizers

  4. Both A and B

Show answer
Correct Option: D
Explanation:

Crop rotation is the process of planting different crops one after another in the same field. Crop rotation increases the fertility of soil and increases the production of crop. High yielding of variety of crops also increases the production of crops.

So, the correct option is 'Both A and B'.

Alley cropping' means _____________________.

evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

  1. Growing of pastures in between two widely spaced rows of fast growing trees

  2. Growing of field crops in between two widely spaced rows of fast growing trees

  3. Growing of only short duration crops in between two widely spaced rows of fast growing

    trees

  4. Growing of only fooder crops in between two widely spaced rows of first growing trees

Show answer
Correct Option: B
Explanation:

Explanation: Alley Cropping is planting rows of trees at wide spacings with a companion crop grown in the alleyways between the rows. Alley cropping can diversify farm income, improve crop production and provide protection and conservation benefits to crops.

Which of the following methods of cultivation will result in the loss of soil fertility?
I.Crop rotation
II. Shifting cultivation
III. Excessive use of chemical fertilizers

evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

  1. I and II only

  2. III only

  3. I and III only

  4. I, II and Ill

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Correct Option: B
Explanation:

When there is excessive use of chemical fertilizers and pesticides, the chemical salts accumulate in the soil and affect the quality and fertility of the soil. 

Thus, the correct answer is option B. 

Crop rotation is used by farmers to increase

evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

  1. Nitrogenous content of soil

  2. Organic content of soil

  3. Community area

  4. Soil fertility.

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Correct Option: D
Explanation:

Crop rotation is the practice of growing of different crops in succession on a piece of land to avoid depletion of  a particular type of nutrient from the soil and to control the weeds , pests  & diseases . Other main reason of crop rotation is to give the soil the time to regain it's fertility 

So, the correct answer is 'Soil fertility'

Genetically improved crop varieties can be developed by

evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

  1. Somatic hybridisation

  2. Transgenic technology

  3. Somaclonal variations

  4. Both A and B.

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Correct Option: D

Sonalika and Kalyan Sona are high yielding varieties of

evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

  1. Maize

  2. Rice

  3. Wheat

  4. Sugarcane.

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Correct Option: B

Crop rotation helps in

evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

  1. Increase in soil fertility

  2. Decrease in soil erosion

  3. Decreased water loss

  4. Decrease in soil fertility

Show answer
Correct Option: A
Explanation:

Crop rotation helps in increase in soil fertility. It is the process of growing a series of different crops in the same area in sequenced seasons. It also helps in reducing soil erosion and increasing in crop yield.

Thus, the correct answer is 'Increase in soil fertility.'