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Factors for Intensification of Cropping and Yield Stability Quiz

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Factors for Intensification of Cropping and Yield Stability Quiz

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Questions and Answers

What is a pre-requisite for the intensification of cropping and achieving yield stability?

Varieties that immobilize nutrients

High yielding varieties (HYV) (correct)

Crops that are not photo-insensitive

Crops susceptible to pests and diseases

Which of the following is NOT a characteristic of crops needed for intensification of cropping as per the text?

Fertilizer responsiveness

Tolerance to pests and diseases

Immobilization of nutrients (correct)

No allelopathic effect

To achieve yield stability, what should be included in the crop system according to the text?

Vegetables and legumes in the crop system (correct)

Photo-insensitive varieties

Crops with allelopathic effects

Crops that deplete nutrients from the same soil layer

What is a key factor to consider to make the best use of space and time with minimum competition?

Including crops that benefit the succeeding crop Signup and view all the answers

Why should crops in an intensification system not have allelopathic effects as per the text?

Allelopathic effects can harm neighboring plants Signup and view all the answers

What is the primary purpose of fish culture in ponds as mentioned in the text?

Cultivating fish species for food production Signup and view all the answers

How do intensive pond systems differ from extensive pond systems?

Extensive systems have higher fish densities for increased biomass productivity Signup and view all the answers

What historical practice laid the foundation for modern fish farming in controlled pond environments?

Using natural pools with no human intervention Signup and view all the answers

Which country led global aquaculture production in 2018 according to the text?

China Signup and view all the answers

How does aquaculture contribute to global food supply based on the text?

It plays a crucial role in meeting increasing protein demands globally Signup and view all the answers

Why do extensive pond systems prioritize maintaining high water quality with lower fish densities?

To prevent overcrowding that may harm aquatic life and ecosystem balance Signup and view all the answers

What factors influence the choice of fish species for culture in ponds?

Temperature tolerance, growth rate, feeding habits, and market demand Signup and view all the answers

How can good water quality be maintained in ponds for promoting fish growth?

Periodically draining or partially draining ponds to remove accumulated sediment Signup and view all the answers

What role does fish culture in ponds play in inland waters and wetlands management?

Contributes to food production, stock enhancement, and biodiversity conservation Signup and view all the answers

Why is sustainable fish farming important as the world population grows?

To ensure a steady food source and conserve wild fish stocks Signup and view all the answers

What is the significance of periodically draining ponds in fish culture?

To remove accumulated sediment and maintain a healthy environment for fish growth Signup and view all the answers