Nilaparvata brown rice planthopper

Lou YG, Cheng JA (2003) Role of rice volatiles in the foraging behaviour of the predator Cyrtorhinus lividipennis for the rice brown planthopper Nilaparvata lugens. Biocontrol 48 73-86... 

Lou YG, Ma B, Cheng JA (2005) Attraction of the parasitoid Anagrus nilaparvatae to lice volatiles induced by the rice brown planthopper Nilaparvata lugens. J Chem Ecol 31 2357-2372... 

Grayer, R.J. et al., Phenolics in rice phloem sap as sucking deterrents to the brown planthopper, Nilaparvata lugens, Acta Hortic., 381, 691, 1994. 

Powell, K.S., Gatehouse, A.M.R., Hilder, V.A., and Gatehouse, J.A., Antifeedant effects of plant lectins and an enzyme on the adult stage of the rice brown planthopper, Nilaparvata lugens, Entomol. Exp. Appl., 75, 51-59, 1995. 

Diazinon applied to paddy water at 2 kilogram/ha active ingredient every 20 days has controlled for several years common insect pest of rice at the International Rice Research Institute. After its continuous use for three and a half years, its efficiency for controlling rice brown planthoppers Nilaparvata lugens Stal) declined. Preliminary studies indicated that biodegradation might be involved. Detailed studies were undertaken and reported elsewhere (17). However, brief descriptions of the procedures used will be provided for better clarity to the reader. 

Whereas S. B. Soloway had originally assumed that the for insecticidal activity critical nitromethylene unit would have to be attached to a heterocycle, scientists at Takeda Chemicals were able to show that acyclic compoimds possessed good insecticidal properties as well. They developed a product to control two important pests in rice, both are cicada species the brown planthopper (Nilaparvata lugens) and the green rice leafhopper Nephotettix cincticeps) (Fig. 8.45). 

The brown planthopper (Nilaparvata lugens) (left) and green rice leafhopper (Nephotettix cincticeps) (right). 

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