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- Title
BIOLOGY OF RICE BROWN PLANTHOPPER, NILAPARVATA LUGENS (STAL) UNDER VARYING TEMPERATURE AND RELATIVE HUMIDITY CONDITIONS.
- Authors
Kaur, Gavneet; Sarao, P. S.
- Abstract
Insect pest in general and brown planthopper (BPH) in particular causes economic damage to rice crop. Temperature and relative humidity greatly influences the BPH population growth. Pre-oviposition, oviposition, incubation, total nymphal period, post-oviposition, nymphal survival, male and female longevity of BPH varied from 1.70-2.70, 14.10-21.0, 5.13- 7.40, 17.40-22.73, 2.30-6.70, 17.40-21.50 and 23.50-25.0 days with mean temperature 30.01±3.65°C, mean relative humidity (RH) 74.80±7.92%) to with mean temperature 26.82±1.72 °C, mean RH 82.0±7.97%, respectively. Fecundity-cum-fertility varied from 98.40-136.70 eggs with a range of 3-17 eggs per egg mass and nymphal survival varied from 85.53-94.16 per cent during different range of temperature and RH. Pre-oviposition, post-oviposition and total nymphal instar duration of BPH was negatively, whereas, oviposition, male/female longevity, fecundity cum fertility and nymphal survival was positively correlated with temperature. The reverse was true regarding the effect of relative humidity on the biological parameters. This variation in the biology of the BPH with temperature and RH will help in the understanding the development and abundance of BPH.
- Subjects
RICE brown spot disease; PLANTHOPPERS; NILAPARVATA lugens; HUMIDITY; OVIPARITY
- Publication
Journal of Experimental Zoology India, 2017, Vol 20, Issue 2, p779
- ISSN
0972-0030
- Publication type
Article