24 Kas 2024 Pazar
Population dynamics and management of diamondback moth (Plutella xylostella Linnaeus) on cabbage cultivation in Chattogram Hill Districts of Bangladesh
Abstract :The most common and destructive cabbage pest in Bangladesh and Asia is the diamondback moth, Plutella xylostella Linnaeus (Lepidoptera: Yponomeutidae). The research was carried out during the 2015-2016 and 2016-2017 cropping seasons in three hill districts of Chattogram, Bangladesh, to know about the population dynamics and to develop sustainable and eco-friendly management techniques for cultivating cabbage to control diamondback moth. The results showed that head infestation on cabbage commenced in the 1st week of November, when head development beginning, and increased gradually with crop age. During this time, the temperature gradually increased, while rainfall decreased. Treatment, T3 had reduced the maximum infestation in the number of DBM population and cabbage head infestation among the treatments (83.59% and 87.44% in Bandarban, 88.39% and 88.76% in Rangamati, 86.25% and 90.80% in Khagrachari over control, respectively). This treatment recorded the maximum yield (53.37 tha-1 in Bandarban, 40.06 tha-1 in Rangamati and 50.16 tha-1 in Khagrachari, respectively) throughout the season. So, spraying of Voliam Flexi 300SC @ 0.5 ml Liter-1 water at 10 days interval+Hand collection & destruction of infested fruits and larvae +Pheromone trap+Nappy trap (T3) will become the most effective treatment for controlling diamondback moth in the Chattogram hill districts of Bangladesh.
Population dynamics, management, nappy trap, hilly areas, cabbage