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(B) Bacterial blight of chickpea is caused by the bacterium $Xanthomonas$ $campestris$.The stem and leaves of the infected plant give a blighted or bu

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$I, III$ and $IV$

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(B) Bacterial blight of chickpea is caused by the bacterium $Xanthomonas$ $campestris$.The stem and leaves of the infected plant give a blighted or burnt-up appearance.Control measures for bacterial diseases in crops typically include:$1.$ Using disease-free seeds to prevent primary infection $(III)$.$2.$ Using disease-resistant varieties,which is the most effective and sustainable method $(IV)$.$3.$ Spraying with copper-based fungicides like Bordeaux mixture to manage bacterial populations $(I)$.While insect vectors are crucial for viral diseases,bacterial blight is primarily seed-borne or soil-borne,making $I, III,$ and $IV$ the most appropriate measures for control.

Column-$I$ (Crop)	Column-$II$ (Variety)	Column-$III$ (Insect)
$P$. Brassica	$I$. Pusa Sem $2$ and Pusa Sem $3$	$W$. Aphids
$Q$. Flat bean	$II$. Pusa Gaurav	$X$. Shoot and fruit borer
$R$. Okra	$III$. Pusa Sawani and Pusa $A-4$	$Y$. Jassids,aphids and fruit borer

Similar Questions

Match the following columns:

Column-$I$ (Crop) Column-$II$ (Variety) Column-$III$ (Insect)

$P$. Brassica $I$. Pusa Sem $2$ and Pusa Sem $3$ $W$. Aphids

$Q$. Flat bean $II$. Pusa Gaurav $X$. Shoot and fruit borer

$R$. Okra $III$. Pusa Sawani and Pusa $A-4$ $Y$. Jassids,aphids and fruit borer

Select the mismatched pair from the following:

Select the false statement.

Which of the following are exotic breeds in poultry farming?

How do microorganisms harm the crop?

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