Population dynamics and management of major insect pests on jhum agriculture in the Bandarban Hill district

Abstract :

The research was conducted during the 2017-2018 cropping season at Bandarban hill tracts of Chattogram, Bangladesh to develop sustainable and eco-friendly management techniques for cultivating jhum crops in order to control key insect pests of jhum crops. The study used a RCBD design with six (06) different treatment combinations. Each treatment was replicated four (04) times in total. Among the treatments, T4=Integrated Management Approach (Nappy trap + field sanitation + spray Voliam Flexi 300SC @ 0.5 ml/liter water 4 times at 20 days interval starting from 30 DAS) reduced the highest infestation of a major insect pest populations of jhum crops, which started in the last week of June and gradually increased with the age of the crop, peaking in the last week of July before declining. Throughout the growing season of jhum crops, it was discovered to be infested. Although there was no discernible effect of temperature on insect pest populations, heavy rainfall may have an impact. The treatment, T4 reduced the percent infestation of major insect pests in jhum crops by 52.31-86.07% compared to the untreated control treatment. Rice (2.96 tha-1), sesame (0.26 tha-1), okra (0.44 tha-1), maize (0.28 tha-1) and marpha (0.95 tha-1) yields were highest in the T4 treatment, on the other hand, has proven to be the foremost effective treatment for controlling the major insect pests of jhum crops in Bandarban hill districts of Chattogram, Bangladesh.

Keyword :

Population dynamics, management, jhum, nappy trap, yield, hill tracts

Author(s) : Latif, M. A., Faruq, M. O.
Downloads : 15
Published Issue : 2022 Vol. 17 Number 2

2022 Vol. 17 Number 2