Tag: crop improvement methods and organisations

Questions Related to crop improvement methods and organisations

After red gram, maize and corn are cultivated because _________________.

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

  1. They increase fertility of soil

  2. They fix $N _2$ in soil

  3. They enhance growth of plant

  4. They prevent disease caused by spotted bollworm

Show answer
Correct Option: A
Explanation:

Total dry matter and yield of maize, corn and red gram planted in soil have shown an increase in the soil fertility. Maize and corn not known to fix atmospheric nitrogen. Spotted bollworm affect the cotton plants and the gram, maize and cotton do not affect the pathogenesis. 


So, the correct answer is, 'They increase the fertility of soil'.

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.

Rotation of crops helps in

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

  1. Insect control

  2. Altering chemical nature of soil

  3. Improving soil fertility and yield

  4. Proliferating weeds

Show answer
Correct Option: C
Explanation:
Crop rotation refers to the practice of growing different types of crops in the same area over a sequence of seasons. Different types of plants require different types of nutrients from the soil. Changing crops routinely allows the land to remain fertile, since not all of the same nutrients are being used each season. For example, planting a legume, such as soybeans, helps to replenish necessary nitrogen in the soil. Crop rotation has helped to increase productivity by replacing cultivated lands that has not been used for one or more seasons with growing different crops that replenish soil nutrients.

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

Which of the following can be an advantage of crop rotation?

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

  1. Crop rotation makes the soil fertile.

  2. Helps in the production of crop yield.

  3. Leguminous plants grown during crop rotation fix atmospheric nitrogen and enrich the soil with nitrogen compounds.

  4. All of the above.

Show answer
Correct Option: D
Explanation:

Crop rotation is the process of successive growing of crop in the same field. This helps in increasing the fertility of the soil. Helps in a good production of the crop. It decreases the population of pests. It also reduces soil erosion.

So, the correct option is 'All of the above'.

What benefits are obtained due to crop rotation?

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

  1. Increase in production

  2. Soil fertility

  3. Weed control

  4. All of the above

Show answer
Correct Option: D
Explanation:

Rotation of crops improves the fertility of the soil and hence, brings about an increase in the production of food grains. It helps in saving on nitrogenous fertilizers, because leguminous plants grown during the rotation of crops can fix atmospheric nitrogen in the soil with the help of nitrogen fixing bacteria. Rotation of crops help in weed control and pest control. Crop rotation adds diversity to an operation. 

__________ is the method of growing two or more crops simultaneously on same piece of land.

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

  1. Mixed cropping

  2. Intercropping

  3. Crop rotation

  4. Both A and B

Show answer
Correct Option: D
Explanation:

The method of growing two or more crops simultaneously on same piece of land is called mixed cropping or inter-cropping. This method helps in improving the fertility of soil.

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.