Q. Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?
A) Black rust of wheat
B) Bacterial leaf blight of rice
C) Downy mildew of grapes
D) Loose smut of wheat
Explanation
[Solution from source] Millardet in Bordeaux, France, noticed that vines sprayed with a copper sulphate and lime mixture escaped downy mildew (Plasmopara viticola), which led to Bordeaux mixture being used as a fungicide. Bacterial leaf blight is bacterial and is not controlled this way. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.