J. Gautam
Nepal Agricultural Research Council, National Ginger Research Programme, Kapurkot, Salyan
 

Abstract

A random Field survey was conducted from August to September during two consecutive ginger growing seasons in 2011 and 2012 in the major ginger growing districts (IIam, Salyan Palpa, Nawalparasi, Dhankuta, Syanja, Makawanpur, Tanahu and Surkhet) of Nepal. White grub (Phyllophaga spp.), Ginger shoot borer (Dichocrosis punctiferalis Guen.), Red ant (Dorylus sp), Termites (Odontotermes sp.) and Leaf roller (Udaspes folus) pest infestation were found in most of the surveyed districts. Rhizome rot (Pythium sp) infestation was found associated with rhizome fly (Calobata sp) in patches in almost all the surveyed districts. Among them white grub and rhizome fly were found economically important insect pests in ginger.

Monitoring of insect species using Sigma energy saving lamp of 18 watt was conducted at National Ginger Research Program (1480 masl), Kapurkot, Salyan during 2011/12. A total of 27 species of Insect pests collected through light trap were identified. However, only 6 different insects namely Phyllophaga serricolis Hope, Dorylus orientalis, Xylotrupes gideon L., Anomala xanthroptera Blanchard Areas galactina orientalis and Nezara viridula L were observed for the population build up trend. Phyllophaga serricolis Hope (38) and Xylotrupes gideon L. (98) showed the highest Occurrence in July where as other insect species during June. During winter season no any occurrence of insect species were recorded in Kapurkot condition.

Keywords: Ginger, Insect pests, Occurrence, Yield.