With reference to High yielding varieties HYVs crops consider the following statements Such crops do...........

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With reference to High-yielding varieties (HYVs) crops, consider the following statements.

Such crops do not require any reliance on irrigation and fertilizers.
Yield can be high in these varieties only if they are allowed to mature later than normal crops.

Which of the above is/are correct?

1 only

2 only

Both 1 and 2

None

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Explanation:

High-yielding varieties (HYVs) of agricultural crops are usually characterized by a combination of the following traits in contrast to the conventional varieties:

higher crop yield per area (hectare)
dwarfness
improved response to fertilizers
high reliance on irrigation and fertilizers - see intensive farming
early maturation

So, both 1 and 2 are wrong.

Most important HYVs can be found among wheat, corn, soybean, rice, potato, and cotton. HYVs become popular in the 1960s and play an important role in the green revolution.