White Grub : A Hidden Threat
Sugarcane is the main source of sugar in Asia and Europe. Sugarcane is grown primarily in the tropical and sub-tropical zones of the southern hemisphere. Sugarcane is the raw material for the production of white sugar, jaggery (gur) and khandsari. It is also used for chewing and extraction of juice for beverage purpose. The sugarcane cultivation and sugar industry in India plays a vital role towards socio-economic development in the rural areas by mobilizing rural resources and generating higher income and employment opportunities. About 7.5 percent of the rural population, covering about 45 million sugarcane farmers, their dependents and a large number of agricultural labour are involved in sugarcane cultivation, harvesting and ancillary activities. It is one of the important commercial crops grown in India. However, the crop is highly susceptible to various insects. The white grub is on top of the list.
White Grub first began to cause damage to sugarcane crops in Réunion in 1981. This grub is the larva of the beetle Hoplochelus marginalis. It develops in the soil, feeding on the roots of sugarcane. White Grub is responsible for serious losses in tonnage and sugar recovery. It attack planted sugarcane setts, usually from the cut ends or eyebuds, but in severe cases internode as well; after germination, the roots are attacked and pest ascends in the canes, eating all their contents and filling the galleries with earth; leaves dry up and the plants die; more active in sandy soils and in drier tracts. In extreme cases the whole stool is deprived of its roots and is readily levered out of the ground by its own weight. The damaged stools are easily pulled out of the ground and sometimes the grubs tunnel into them. The damage is greatest when the third-stage grubs are abundant, for this stage is extremely voracious, particularly when young. The early stages subsist in part on soil organic matter. The amount of damage caused by L. stigma grubs depends on the number of grubs, instar of grubs, the growth stage of the cane when it is attacked, and cultural techniques. Attacks on young cane may cause damage such that replanting is necessary. On older canes the attack may cause considerable cane yield reduction or even total loss .
For over a decade, this pest has spread over a large area and has become almost a menace. Accordingly, it is evident that the problem is serious in nature and merits immediate attention of the HPM Chemical & Fertilizers Ltd., for its effective control in the field conditions. Realising its importance, the organisation has recently formulated a special insecticide to eliminate this problem and has decided to initiate a National Programme for the awareness of this problem. Now HPM has brought a new product ‘Ganno’ for sugarcane , which is a Contact & Systemic insecticide. Ganno is a pre-mix of Fipronil 40% and Imidacloprid 40% (a.i.) as a water dispersible granule in the formulation. It is an unique combination product with dual action against pest. It is suitable to control problems of white grub in Sugarcane. The active ingredient Fipronil is toxic after ingestion with some contact action and acts by interfere the transmission of nerve impulse. Another active of Ganno, Imidacloprid disturbs the signal transmission and leading finally the death of the treated insects. It show elongated persistence with excellent control. It show definite effect on plant growth, resulting with better yield. The use of “Ganno” will end the problem of White Grub. It is one such insecticide which is compatible with other agrochemicals.
HPM provides high yielding varities of agrochemicals to the farmers. These improved and better agrochemicals have considerably raised their farm produce.