Q. Consider the following four measures (a - d) that could be taken to successfully grow chick-pea in an area where bacterial blight disease is common (a) Spray with Bordeaux mixture (b) Control of the insect vector of the disease pathogen (c) Use of only disease-free seeds (d) Use of varieties resistant to the disease Which two of the above measures can control the disease?
A) (a) and (d)
B) (b) and (c)
C) (a) and (b)
D) (c) and (d)
Explanation
[Solution from source] Bacterial blight is seed-borne, so sowing disease-free seed and growing resistant varieties are the reliable controls. Bordeaux mixture is mainly a fungicide, and this disease has no insect vector to target. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.