Question

What crop is affected by bollworm disease?

Answer 1

Hint: This disease is caused by a crop, whose material is worn by many Indians on a daily basis. They are amazing for summer wear. The bollworm moths are about 0.75 inches long, with a wingspan of 1 to 1.5 inches. Eggs are spherical, flattened, with 10 to 15 perpendicular rows of toothed ribs.

Complete answer:
Cotton crop is affected by bollworm disease. Newly hatched larvae, called first-instar larvae. They have many rows of dark tubercles near the back, each bearing one or two bristles. Cotton bollworm Larvae are found in colour ranging from olive green to dark reddish-brown in colour. Cotton bollworm larvae damage balls and squares. moist grass generally accumulates near the base of the ball.

The impact of a bollworm infection depends on the number of larvae present, the age of larvae and the timing of damage relative to the crop’s fruiting cycle. Even though most of the damage is done by large larvae, it is not possible enough to kill a significant proportion of them once they are older than the third instar. Monitoring and controlling must be there aimed at the eggs and small larvae.

In managing populations of bollworms, natural enemies are very important. Until late in the season damaging populations usually do not appear, after treatment for other pests have disrupted natural enemies.

Note: Insecticides are needed only when the population of enemies exceeds the treatment threshold while the crop has a significant number of squares or green bolls that will have time to develop into mature bolls by seasons’ end.