Effects of nitrogen on the tolerance of brown planthopper, Nilaparvata Lugens, to adverse environmental factors

The effect of nitrogen content in rice plants on the tolerance of brown planthopper (BPH), Nilaparvata lugens Stål to high temperature, starvation and insecticide, was studied in the laboratory at International Rice Research Institute (IRRI), Philippines. Survival of nymphs and adults, fecundity and...

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Bibliographic Details
Published in:Insect science 2005-04, Vol.12 (2), p.121-128
Main Authors: LU, ZHONG-XIAN, HEONG, KONG-LUEN, YU, XIAO-PING, HU, CUI
Format: Article
Language:English
Subjects:
Brown planthopper
high temperature
insecticide
Nilaparvata lugens Stål
nitrogen
starvation
tolerance
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Summary:The effect of nitrogen content in rice plants on the tolerance of brown planthopper (BPH), Nilaparvata lugens Stål to high temperature, starvation and insecticide, was studied in the laboratory at International Rice Research Institute (IRRI), Philippines. Survival of nymphs and adults, fecundity and egg hatchability were significantly increased by the increase of nitrogen content in host plants at 38°. Moreover, the survival of nymphs, fecundity and egg hatchability were significantly higher in BPH populations on rice plants with a high nitrogen regimen than those on rice plants with a low nitrogen regimen. Meanwhile, the tolerance of female adults to starvation and nymphs to growth regulator buprofezin on rice plants with a high nitrogen regimen were slightly increased. This indicates that the tolerances of BPH to adverse environmental stresses were positively increased by the application of nitrogenous fertilizer. The outbreak potential of BPH induced by the excessive application of fertilizer in rice fields was also discussed.
ISSN:1672-9609
1744-7917
DOI:10.1111/j.1744-7917.2005.00014.x