Tip clipping of infested seedling to manage stem borer in rice is a

Correct option is A

Correct answer – (a) Tip clipping involves physically removing the infested portion of seedlings. This directly reduces pest population before transplanting. Hence, it is a mechanical method of control.
Information Booster / Facts Mechanical control includes hand picking, clipping, and destruction of infested parts. It is effective in nursery stage pest management.
Why other options are incorrect (b) Physical control includes heat, light, traps, etc. (c) Cultural control includes sowing time, spacing, field sanitation. (d) Biological control uses predators, parasitoids, and pathogen