Predators Of Brown Planthopper Research Articles

Herbivore induced plant volatiles of paddy and their influence in the attraction of mirids Cyrtorhinus lividipennis reuter

In the present study, a popular rice variety IR 20 was selected to characterize volatile profile change due to the two major insect pest infestation (Brown plant hopper Nilaparvata lugens and Yellow stem borer Scirpophaga incertulas). Volatile collection was made using air entrainment method and were characterized using GCMS (Gas Chromatography Mass Spectrometry). Collected volatiles were checked for their attraction towards the predator of Brown plant hopper (BPH), Mirids Cyrtorhinus lividipennis (Reuter) using Y arm olfactometer. Terpenoids were identified as the major compounds differentiating from the healthy plants. Significant attraction was observed in the predators towards BPH infested volatiles. The results of the study suggested its usage for the management of the pest under field conditions.

Safety of Neem Formulations Vis-a-Vis Insecticides to Cyrtorhinus lividipennis Reuter, a Predator of Brown Planthoppers Nilaparvata lugens (Stal) in Rice Crop

A greenhouse study was carried out to test the safety of commonly available neem formulations to the mirid bug, Cyrtorhinus lividipennis Reuter, an effective and widely distributed predator of brown planthopper, compared to that of recommended insecticides in rice. Neemgold at 0.5 per cent and Neemax at 2.0 per cent were safe causing 26.7 and 33.3 per cent mortality, respectively, after 72h exposure; whereas cent per cent mortality was recorded in insecticidal treatments within 24h of exposure.

Brown Mirid Bug, a New Predator of Brown Planthopper (BPH) in the Philippines

Brown Mirid Bug, a New Predator of Brown Planthopper (BPH) in the Philippines