‘Khaira disease of paddy’ occurs due to (correct answer + 1, wrong answer - 0.25)
A
virus
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B
nematode
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C
Zn deficiency
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D
Mo deficiency
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Solution
The correct option is C Zn deficiency The deficiency of zinc in paddy (rice) is the cause of khaira disease. The name 'khaira' is given on account of the colour of the affected leaves of rice plant that resembles catechu (a brownish extract of Acacia) which is locally called as khair in Hindi language.