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Consider the following statements:
1. There has been a depleting trend in grain density of zinc and iron in rice and wheat cultivated in India since the 1960's.
2. The nutrient loss in wheat & rice is caused in response to higher grain yield.
Which of the statements given above is/are correct?
  • a)
    1 only
  • b)
    2 only
  • c)
    Both 1 and 2
  • d)
    Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the following statements:1. There has been a depleting trend ...
  • Recently, researchers from various institutes under the Indian Council of Agricultural Research (ICAR) and Bidhan Chandra Krishi Viswavidyalaya found depleting trends in grain density of zinc and iron in rice and wheat cultivated in India.
    • The researchers collected seeds of rice (16 varieties) and wheat (18 varieties) from the gene bank maintained at the ICAR’s Cultivar repositories.
  • Concentrations in Rice: Zinc and iron concentrations in grains of rice cultivars released within the 1960s were 27.1 mg/kg and 59.8 mg/kg. This depleted to 20.6 mg/kg and 43.1 mg/kg, respectively within the 2000s.
  • Concentrations in Wheat: The concentrations of zinc and iron were 33.3 mg/kg and 57.6 mg/kg in cultivars of the 1960s, dropped to 23.5 mg/kg and 46.4 mg/kg, respectively in cultivars released during the 2010s. Hence, statement 1 is correct.
  • Reason for the Decrease:
    • Dilution effect' that is caused by decreased nutrient concentration in response to higher grain yield.
    • This means the rate of yield increase is not compensated by the rate of nutrient take-up by the plants. Also, the soils supporting plants could be low in plant-available nutrients. Hence, statement 2 is correct
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Consider the following statements:1. There has been a depleting trend in grain density of zinc and iron in rice and wheat cultivated in India since the 1960s.2. The nutrient loss in wheat & rice is caused in response to higher grain yield.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?
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Consider the following statements:1. There has been a depleting trend in grain density of zinc and iron in rice and wheat cultivated in India since the 1960s.2. The nutrient loss in wheat & rice is caused in response to higher grain yield.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? for Current Affairs 2024 is part of Current Affairs preparation. The Question and answers have been prepared according to the Current Affairs exam syllabus. Information about Consider the following statements:1. There has been a depleting trend in grain density of zinc and iron in rice and wheat cultivated in India since the 1960s.2. The nutrient loss in wheat & rice is caused in response to higher grain yield.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Current Affairs 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:1. There has been a depleting trend in grain density of zinc and iron in rice and wheat cultivated in India since the 1960s.2. The nutrient loss in wheat & rice is caused in response to higher grain yield.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?.
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