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Disease/Pest

area wise diseases

Crop Name:

Cotton

Disease Name/Pest:

Pink Boll Worm

Reported Area:

Bethapudi

Reported Mandal:

Phirangipuram

Symptoms:

Infestation of flower buds causes shedding of buds.
Flower infestation lead to the formation of rosette flower.
Reduction of lint development, destruction of seed and weakened lint.
Infested bolls open prematurely exposing the saprophytic fungi to grow on them.
If seeds are used for sowing, the germination is reduced.

Causal_organism:

Pectinophora gossypiella

Curative Measures:

If we observe 01 larva/10 boll then it is the indication of more incidence of worm so synthetic pyrethroids can be use like Cypermethrin 10 EC, 25 EC.
Carbamates like Thiodicarb 75 WP.

Preventive Methods:

Inorder to monitor Pink boll worm use gossyplure pheromone baited traps that attract the males if few are found that is the indication of Infection of PBW.
Inorder to suppress, trap most of the male moths in the field by placing large number of pheromone traps (@ 20 nos/ha) so that mating is disrupted and the population development is arrested.

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