Some Observations on the White Grub HolotrichiaInsularisBrenske (Melolonthidae: Coleoptera) and Its Control in Jodhpur Division of Rajasthan

Abstract

The peak period of activity of the white grubs (Holotrichia insularia Brenske) in six localities in and around Jodhpur covered the period August-September. The highest population density of the pest in these areas was found to be 61,000 larvae per ha in the month of August. Chemical control studies on, the pest in a field of bajra crop in Bprunda village near Jodhpurr revealed that the use of lnndane and thiodemeton granules @ 1 kg actual ingredient per ha is highly successful and economical in controlling this pest,