Studies on the efficacy of synthetic jasmonates and salicylates on parasitism of brown planthopper, Nilaparvata lugens (Stal.) by Anagrus sp.

A field experiment to evaluate the effect of synthetic jasmonates and salicylates on parasitisation of rice brown planthopper (BPH)by egg parasitoid, Anagrus sp. was conducted during October - December, 2015. Jasmonic acid (JA), Methyl jasmonate (MeJ), Salicylic acid (SA) and Methyl salicylate (MeS) at three different concentrations (1, 10 and 100 mM) were tested for their effect on rice BPH population and their ability to
attract egg parasitiod. Significantly, higher % parasitism and thereby less BPH population was noticed on plants treated with Jasmonates and salicylates than buffer and control. Even though all the evaluated treatments attracted parasitoids, Jasmonic acid @10 mM recorded the maximum mean parasitism of 34.69 % against control with 10.69 % only. These potential synthetic herbivore induced plant volatiles (HIPVs) can be explored in rice fields for attracting Anagrus sp.