Author(s):

Pankaj Kumar Mohanta, SVS Raju and GS Giri

Abstract: Rice is one of the most important staple food crops grown worldwide. Despite of using improved agronomic practices, we cannot get optimum production and productivity. The reason behind its low productivity includes different factors, among them insect pest infestation is of prime importance. The crop is liable to attack by more than 20 species of insect pests. Among several insect pests, sucking pests such as brown plant hopper, green leaf hopper and gundhi bug cause damage at both the nymphal and adult stages by sucking sap and thereby devitalizing plants and also such insects act as vectors of some viral diseases, which are difficult to manage. Chemical control is considered as one of the most effective as well as quick method in reducing the pest population below economic injury level. So the present investigation was carried out in order to find out the efficacy of certain chemicals against sucking pests infesting rice. From the results of the experiment, it was found that the treatment Fipronil 40% +Imidacloprid 40% WG @50 +50g a.i./ha is most effective against N. lugens and N. virescens and against gundhi bug most effective treatment is Indoxacarb 10% +Thiamethoxam 10% WG @50 +50g a.i./ha.

Pages: 2107-2113  |  990 Views  497 Downloads

Download (725KB)