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  • Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?Option: 1  Bacterial leaf b

Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?

Option: 1

 Bacterial leaf blight of rice


Option: 2

Downy mildew of grapes


Option: 3

Loose smut of wheat

 


Option: 4

Black rust of wheat


Answers (1)

The discovery of Bordeaux mixture as a popular fungicide is linked to the control of downy mildew of grapes caused by the fungus Plasmopara viticola. In the 19th century, this disease was causing significant losses in grape production in France, and efforts were made to find an effective control measure. In 1882, the French botanist Pierre-Marie-Alexis Millardet discovered that a mixture of copper sulfate and lime (Bordeaux mixture) could effectively control downy mildew of grapes. Bordeaux mixture is now widely used as a fungicide for the control of many fungal diseases in various crops. Therefore, option 2 is the correct answer.

 

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Kshitij

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