Agrotechnology

Population dynamics and varietal preference of mango fruit borer (Autocharis albizonalis, Hampson) in new alluvial zone of West Bengal

2^nd International Conference on Agricultural & Horticultural Sciences

Radisson Blu Plaza Hotel, Hyderabad, India February 03-05, 2014

Mainak Bhattacharyya, P Barma and S Jha

Posters: Agrotechnol

Abstract:

The present investigation on mango fruit borer (Autocharis albizonalis, Hampson) was carried out in Regional Research Station of Bidhan Chandra Krishi Viswavidyalaya at Gayeshpur to study the varietal preference and population dynamics of this borer. It was observed that the infestation of this borer was not highly significant to the mango growers during the course of the investigation. It was also noticed that the fruits in pea to marble size stage were mostly susceptible to the pest attack during the month of March to April. Peak Fruit damage (3.81%) was observed during 3 rd week of March in the year 2006, whereas highest infestation was noticed (0.79%) during the last week of April in the year 2007. Similarly peak infestation of the fruit borer during 2009 was on the last week of April (2.29%) and it was on the 3 rd week of March in 2010 (3.81%) respectively. For varietal preference, fifteen commercially grown cultivars were selected in RBD model with Duncan Multiple Range Test to identify least infested mango cultivars by this borer. From the findings it can be inferred that among the commercial mango varieties Himsagar was the most susceptible. It was also observed during the course of investigation that highest intensity of fruit damage could be recorded on the western part of the crop canopy. Laboratory studies on biochemical analysis against mango fruit borer revealed that the preference had strong and positive association with pulp phenol level but no association with seed phenol level. Analysis on free amino acid level of pulp and seed at different stages of fruit development was not associated with the infestation of the fruit borer.

Biography :

Mainak Bhattacharyya has completed his BSc in Agriculture and M.Sc. in Agricultural Entomology at the age of 26 years from Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal. He is now working as an Assistant Teacher in a high school in West Bengal.