A NEW METHOD OF DETERMINATION OF ETL FOR PESTS ON CROPGhosh Arunava, Pal Prasenjit and Pal Satyabrata
The spectrum of vegetable crops is regarded as a very important component in the totality of agricultural produce in India. Vegetable crops are very much susceptible to pest-incidence. In order to tackle the devastating damages in crops by incidence of pests, pest management system or briefly, pest surveillance system has been developed. The modern procedure related to pest management system refers to the concept, Economic Threshold Level (ETL). The knowledge of ETL helps reduction of crop loss (and ensures less pesticide application), and as a sequel, profit is increased. Also substantial knowledge is required on the dynamics of pest population in order to determine the density at which the economic injury level (EIL) may be prevented (Weersink et al., 1991). EIL is defined as the lowest population of pests that will cause economic damage. ETL refers to the density at which control measures should be determined to prevent an increasing pest population from reaching EIL. The existing method of determination of ETL is based on economic parameters. A new method (developed on application of statistical methods) for the determination of ETL has been developed and it has been applied on two pests, namely, Yellow Mite and Thrips, in case of the vegetable crop, Chilli (Capsicum annum L) based on a special type of experiment (where no pesticides are used and the pests are subjected to their natural birth, growth and decay).
Enter your contact information below to receive full paper.