Tag: evs

Quizzes (439) Questions (4580)

Questions Related to evs

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

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

  1. Crop rotation

  2. Multiple cropping

  3. Field fallow

  4. Mixed cropping
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

What lead to the increasing yield of production?

  1. Crop rotation

  2. High yielding variety of seed

  3. Synthetic fertilizers

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.

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

Alley cropping' means _____________________.

  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
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

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

  1. I and II only

  2. III only

  3. I and III only

  4. I, II and Ill
Reveal answer Fill a bubble to check yourself
B Correct answer
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. 

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

Crop rotation is used by farmers to increase

  1. Nitrogenous content of soil

  2. Organic content of soil

  3. Community area

  4. Soil fertility.
Reveal answer Fill a bubble to check yourself
D Correct answer
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'

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

Genetically improved crop varieties can be developed by

  1. Somatic hybridisation

  2. Transgenic technology

  3. Somaclonal variations

  4. Both A and B.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Genetically improved crops are developed through various biotechnological methods. Both somatic hybridization (fusing somatic cells) and transgenic technology (inserting foreign DNA) are established techniques for crop improvement.

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

Crop rotation helps in

  1. Increase in soil fertility

  2. Decrease in soil erosion

  3. Decreased water loss

  4. Decrease in soil fertility
Reveal answer Fill a bubble to check yourself
A Correct answer
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.'